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BNC (M) St. To BNC (M) St. With RG316 (L-3Mtr) Cable Assembly
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Current Ham Radio News
From time to time, look for Paul KA4WPX to be active as either V7/KA4WPX or V73AX (Kwajalein Club station). QRV on 160-10, CW.
The post
V7/KA4WPX – Kwajalein Atoll
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DX-World
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March 03, 2021 at 10:09AM
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Current ham radio news
ARISS APRS Testing The ARISS team has been working very closely with NASA and ESA to identify potential ARISS radio anomaly causes and resolve the radio issues that were observed after the EVA (spacewalk) conducted on January 27. During this spacewalk, cabling was installed to support the commissioning of the Bartolomeo attached payload capability mounted on the Columbus module. Part of this cabling rerouted the cabling of the ARISS antenna on Columbus to the ARISS radio system.
Through a great deal of coordination with NASA and ESA, ARISS will be conducting a set of APRS tests to determine the operational use of the ARISS radio system in Columbus through employment of three different cabling configurations. Over the next couple of days, ARISS will be performing a series of tests using our APRS capability through the standard 145.825 MHz APRS frequency. The crew will be periodically shutting down the radio and swapping cables so ARISS can troubleshoot the radio system and the cabling. ARISS is unsure of the exact swap times as it will be dependent upon the crew’s availability.
We expect these tests to start no earlier than 1600 UTC on March 2 and run through sometime on March 3. We cannot guarantee that these troubleshooting tests will resolve the radio issue. But we encourage ARISS APRS operations in this time span. Additionally, a contingency task has been approved for an EVA planned for this Friday March 5 if these tests are unsuccessful. This EVA task would return the ARISS cabling to the original configuration prior to the January 27 EVA. Being a contingency task means the crew will only be perform the activity if time allows. So there is no guarantee that this EVA will be conducted on Friday.
We ask to please not send any “No contact” e-mails or social media responses as this will overwhelm the ARISS team. But if you definitely hear the packet system working or are able to connect through it, let us know the Date, Time and Grid Square of the occurrence.
We thank you for your patience as we work through this somewhat complex anomaly.
73,
Frank Bauer, KA3HDO\ ARISS, International Chair Executive Director, ARISS-USA
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The winning article for the February 2021 QST Cover Plaque award is “Create Your Own 1:1 Coax Choke Balun,” by John Portune, W6NBC. The... Read more
The post ARISS APRS Testing appeared first on QRZ NOW - Ham Radio News.
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Current ham radio news
Responding to comments and recent videos here on Youtube. Is there a big threat to amatuer radio operators fourth amendment rights? Are we opening outselve sup to “Warrantless Searched”? Well, its complicated, but I will try to walk through it.
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Yaesu FT-DX10 HF Transceiver – Is it Right for You?
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We take a look at one of the most recent HF transceivers to come onto the ham radio market. Could this be the new FT-101E that was one of the best sel... Read more
What is the Base Holding Up My Hexbeam?
March 03, 2021
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William Noble asks about the base used to hold up my MFJ-1846 Hex Beam antenna. The actual base that allows for a fold-over mast was designed by frien... Read more
ARISS APRS Testing
March 03, 2021
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ARISS APRS TestingThe ARISS team has been working very closely with NASA and ESA to identify potential ARISS radio anomaly causes and resolve the radi... Read more
Moldova Peace Corps to Sponsor March 3 Amateur Radio on the International Space Station Contact
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An Amateur Radio on the International Space Station (ARISS) contact between youngsters and youth in Moldova and an International Space Station (ISS) c... Read more
John Portune, W6NBC, Wins the February 2021 QST Cover Plaque Award
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The winning article for the February 2021 QST Cover Plaque award is “Create Your Own 1:1 Coax Choke Balun,” by John Portune, W6NBC. The... Read more
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Current ham radio news
William Noble asks about the base used to hold up my MFJ-1846 Hex Beam antenna. The actual base that allows for a fold-over mast was designed by friend Mike Bergman and welded by his son Carson. It’s held to the ground by four 3-foot stakes and is exceptionally sturdy. Many thanks to Mike and son!
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HF Antenna In An HOA, Chameleon MPAS 2.0 Is Discrete!!
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InnovAntennas invest in Ansys
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InnovAntennas have invested in Ansys HFSS 2020 R2, a fully 3-dimensional mesh-based simulation package to help in the perfection and product... Read more
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Yaesu FT-DX10 HF Transceiver – Is it Right for You?
March 03, 2021
No comments
We take a look at one of the most recent HF transceivers to come onto the ham radio market. Could this be the new FT-101E that was one of the best sel... Read more
What is the Base Holding Up My Hexbeam?
March 03, 2021
No comments
William Noble asks about the base used to hold up my MFJ-1846 Hex Beam antenna. The actual base that allows for a fold-over mast was designed by frien... Read more
ARISS APRS Testing
March 03, 2021
No comments
ARISS APRS TestingThe ARISS team has been working very closely with NASA and ESA to identify potential ARISS radio anomaly causes and resolve the radi... Read more
Moldova Peace Corps to Sponsor March 3 Amateur Radio on the International Space Station Contact
March 02, 2021
No comments
An Amateur Radio on the International Space Station (ARISS) contact between youngsters and youth in Moldova and an International Space Station (ISS) c... Read more
John Portune, W6NBC, Wins the February 2021 QST Cover Plaque Award
March 02, 2021
No comments
The winning article for the February 2021 QST Cover Plaque award is “Create Your Own 1:1 Coax Choke Balun,” by John Portune, W6NBC. The... Read more
The post What is the Base Holding Up My Hexbeam? appeared first on QRZ NOW - Ham Radio News.
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Current ham radio news
We take a look at one of the most recent HF transceivers to come onto the ham radio market. Could this be the new FT-101E that was one of the best sellers of the 1960s? Peter Waters G3OJV, takes a look and reports on his three weeks of using this radio.
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“Nearly two years ago, we decided that we needed a better antenna for all band operation to replace our traditional use of wire dipoles.... Read more
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Yaesu FT-DX10 HF Transceiver – Is it Right for You?
March 03, 2021
No comments
We take a look at one of the most recent HF transceivers to come onto the ham radio market. Could this be the new FT-101E that was one of the best sel... Read more
What is the Base Holding Up My Hexbeam?
March 03, 2021
No comments
William Noble asks about the base used to hold up my MFJ-1846 Hex Beam antenna. The actual base that allows for a fold-over mast was designed by frien... Read more
ARISS APRS Testing
March 03, 2021
No comments
ARISS APRS TestingThe ARISS team has been working very closely with NASA and ESA to identify potential ARISS radio anomaly causes and resolve the radi... Read more
Moldova Peace Corps to Sponsor March 3 Amateur Radio on the International Space Station Contact
March 02, 2021
No comments
An Amateur Radio on the International Space Station (ARISS) contact between youngsters and youth in Moldova and an International Space Station (ISS) c... Read more
John Portune, W6NBC, Wins the February 2021 QST Cover Plaque Award
March 02, 2021
No comments
The winning article for the February 2021 QST Cover Plaque award is “Create Your Own 1:1 Coax Choke Balun,” by John Portune, W6NBC. The... Read more
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A dozen US Army Military Auxiliary Radio System (MARS) volunteers have been honored with gold-level recognition for the President’s Volunteer Service Award for 2020.
They are Bob Mims, WA1OEZ; Ron Tomo, KE2UK; Mark Bary, N4EOC; Billy Pearson, KO4XT; Dave Bock, W8OHS; Bob Baker, K5LLF; John Monson, WB0PLW; Gary Geissinger, WA0SPM; Brian Handy, W8JBT; Bliss Wheeler, W7RUG; Jim Hamilton, K4QDF, and...
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March 03, 2021 at 12:14PM
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In January 2021, C.Crane announced the latest addition to their radio line-up: the C.Crane CC WiFi-3. C.Crane was one of the first radio manufacturers that embraced the world of Internet radio with their CC WiFi product line. The WiFi-3 is the latest iteration and offers the following upgrades over previous models: This radio uses the […]
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March 03, 2021 at 12:14PM
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ARRL -
Members of Germany’s AMSAT organization, AMSAT-DL, in cooperation with the Sternwarte Bochum Institute in Bochum, Nordrhein-Westfalen, Germany, have been using the institute’s 20-meter (65.6-foot) diameter dish antenna to listen directly to signals from probes in Mars orbit.
Signals have been copied from the Chinese Tianwen-1 and the Hope Emirates Mars Mission (EMM) spacecraft now orbiting Mars ...
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March 03, 2021 at 03:09PM
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Current ham radio news
Members of Germany’s AMSAT organization, AMSAT-DL, in cooperation with the Sternwarte Bochum Institute in Bochum, Nordrhein-Westfalen, Germany, have been using the institute’s 20-meter (65.6-foot) diameter dish antenna to listen directly to signals from probes in Mars orbit.
Signals have been copied from the Chinese Tianwen-1 and the Hope Emirates Mars Mission (EMM) spacecraft now orbiting Mars ...
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March 03, 2021 at 03:09PM
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Current ham radio news
ARRL -
Amateur Radio on the International Space Station (ARISS) International Chair Frank Bauer, KA3HDO, reports that the ARISS team has been working closely with NASA and the European Space Agency (ESA) to identify what may have caused what ARISS is calling a “radio anomaly” on January 27. The net result has been an inability to use the NA1SS ham station gear in the ISS Columbus module. For the time ...
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March 03, 2021 at 03:09PM
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Current ham radio news
Amateur Radio on the International Space Station (ARISS) International Chair Frank Bauer, KA3HDO, reports that the ARISS team has been working closely with NASA and the European Space Agency (ESA) to identify what may have caused what ARISS is calling a “radio anomaly” on January 27. The net result has been an inability to use the NA1SS ham station gear in the ISS Columbus module. For the time ...
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March 03, 2021 at 03:09PM
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Current ham radio news
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March 03, 2021 at 03:09PM
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March 03, 2021 at 03:09PM
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Current ham radio news
WA7BNM Contest Calendar - 0800Z-1100Z, May 15 and 0800Z-1100Z, May 16
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March 03, 2021 at 03:09PM
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WA7BNM Contest Calendar - 2000Z-2130Z, Mar 10
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March 03, 2021 at 08:09PM
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WA7BNM Contest Calendar - 2300Z, Mar 10 to 2300Z, Mar 11 and 2300Z, Mar 13 to 2300Z, Mar 14
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Current ham radio news
Andy DK5ON plans activity from Curacao between March 4-23, 2021 as PJ2/DK5ON. QRV on 80-6m; CW, SSB, RTTY, Digi, FT8. QSL via DK5ON (d/b), LoTW, Club Log OQRS.
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[REMINDER] PJ2/DK5ON – Curacao
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DX-World
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March 03, 2021 at 11:09PM
via RSS Feed https://www.dx-world.net/pj2-dk5on-curacao/?utm_source=rss&utm_medium=rss&utm_campaign=pj2-dk5on-curacao
Current ham radio news
On March 3, Hiro JF1OCQ started remote operation of 5W7X from Japan. He says this is not a pirate station. QSL via H/c, LoTW.
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5W7X – Samoa
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March 03, 2021 at 11:09PM
via RSS Feed https://www.dx-world.net/5w7x-samoa/?utm_source=rss&utm_medium=rss&utm_campaign=5w7x-samoa
Current ham radio news
Bodo, HB9EWU is currently on a humanitarian mission to northern Zambia (Luapula Province; Loc: KI40iq). He has acquired the callsign 9J2BG and hopes to QRV on 20m with an end-fed half-wave antenna using Yaesu FT-857. Bodo states: QSL cards are managed via HB9EWU, please send cards direct or via bureau only to HB9EWU. Please note […]
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9J2BG – Zambia
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March 03, 2021 at 11:09PM
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Current ham radio news
Hiro, 5W7X is currently active from Samoa, IOTA OC - 097.
via Current ham radio news
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March 04, 2021 at 04:09AM
via RSS Feed https://dxnews.com/5w7x_samoa/
Current ham radio news
Dwight, VE7BV will be active again as TG9BBV from Guatemala, 1 - 30 November 2021.
via Current ham radio news
https://ift.tt/2l9lD4y
March 04, 2021 at 06:10AM
via RSS Feed https://dxnews.com/tg9bbv/
Current ham radio news
Richard, NE8Z will be active as HC1MD/2 from Provincia de Santa Elena, Ecuador, 5 - 15 March 2021.
via Current ham radio news
https://ift.tt/2Fx1RGA
March 04, 2021 at 06:10AM
via RSS Feed https://dxnews.com/hc1md_ecuador/
Manage
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Types Of Coaxial Cables And How They Are Specified
These cables can be used with our choke balun that comes with the standard Buddipole. They can be used with our Triple Ratio Switch Balun (TRSB), or for any other antenna system. These are premium, made in USA MILSPEC-17 coaxial cables with custom injection-molded pressure reliefs and captive weatherproof end caps. We designed the over-molded strain reliefs with retention slots to hold a hook-and-loop one-wrap strap (included) which can be used to safe rolled up coax or secure the coax to a mast, for example. Glenair high-performance Coax cables are constructed with silver plated conductors, insulated with fluoropolymer material, and completed with single or double layers of conductive shielding and applicable jacket.
Hitachi Cable America’s coaxial cables are tested with equipment that simulates a wide variety of environmental and electrical efficiency circumstances. As a end result, the expectations for positive, dependable and trouble free operations are of the highest degree of confidence.
Hitachi Cable America provides a full line of nice wire coaxials and twinaxials from 36 to 50 AWG. Many of our cables use Hitachi developed copper alloy to offer superior conductivity, flexibility and tensile strength. We have a long history of precision wire growth for the medical business – for ultrasound, catheter, endoscopy and surgical purposes, plus industrial inspection utilizing ultrasound applied sciences. Think of Hitachi Cable America in your subsequent nice wire improvement program. If you aren't conscious about the cable you must utilize, or have an unfamiliar connector/meeting you want duplicated, Contact us and we can help design the coaxial cable meeting or match the connectors required.
IMPEDANCE - Impedance is a term expressing the ratio of voltage to present in a cable of infinite size. In the case of coaxial cables, impedance is expressed when it comes to "ohms impedance".The coaxial cables usually fall into three primary lessons; 50 ohms, seventy five ohms, and 95 ohms.
This metric is used to calculate propagation delay, and is commonly around eighty five% for prime quality coaxial cables. These cables terminate in Amphenol RF Brand (to not be confused with the cheaper Amphenol Connex) BNC male connectors (see picture). The cable is RG58 A/U 50 ohm and is available in each 25' (7.62 meters) and 50' (15.24 meters) lengths, with or with out SO239 adapters.
F-type connectors are also referred to as F-81 connectors and are specified by IEC commonplace IEC . VELOCITY OF PROPAGATION - Velocity of propagation, commonly known as velocity, is the ratio of the pace of the flow of an electric present in an insulated cable to the pace of sunshine. All insulated cables have this ratio and it is expressed in a %- age. In the case of coaxial cables with polyethylene dielectric, this ratio is within the range of sixty five% - sixty six%.
The cable TV and closed circuit TV methods use miles of this kind cable. In coaxial cable, the "go" wire is the center conductor, some form of copper wire, stable or stranded, of comparatively small diameter, around which is a very heavy insulation - the dielectric. But the "return" wire is now not one other equivalent wire. Often referred to as 'Velocity' or 'VF', velocity of propagation refers back to the ratio of the speed of a wave via a bodily medium against the pace of light in a vacuum.
0 notes
Text
Types Of Coaxial Cables And How They Are Specified
These cables can be used with our choke balun that comes with the standard Buddipole. They can be used with our Triple Ratio Switch Balun (TRSB), or for any other antenna system. These are premium, made in USA MILSPEC-17 coaxial cables with custom injection-molded pressure reliefs and captive weatherproof end caps. We designed the over-molded strain reliefs with retention slots to hold a hook-and-loop one-wrap strap (included) which can be used to safe rolled up coax or secure the coax to a mast, for example. Glenair high-performance Coax cables are constructed with silver plated conductors, insulated with fluoropolymer material, and completed with single or double layers of conductive shielding and applicable jacket.
Hitachi Cable America’s coaxial cables are tested with equipment that simulates a wide variety of environmental and electrical efficiency circumstances. As a end result, the expectations for positive, dependable and trouble free operations are of the highest degree of confidence.
Hitachi Cable America provides a full line of nice wire coaxials and twinaxials from 36 to 50 AWG. Many of our cables use Hitachi developed copper alloy to offer superior conductivity, flexibility and tensile strength. We have a long history of precision wire growth for the medical business – for ultrasound, catheter, endoscopy and surgical purposes, plus industrial inspection utilizing ultrasound applied sciences. Think of Hitachi Cable America in your subsequent nice wire improvement program. If you aren't conscious about the cable you must utilize, or have an unfamiliar connector/meeting you want duplicated, Contact us and we can help design the coaxial cable meeting or match the connectors required.
IMPEDANCE - Impedance is a term expressing the ratio of voltage to present in a cable of infinite size. In the case of coaxial cables, impedance is expressed when it comes to "ohms impedance".The coaxial cables usually fall into three primary lessons; 50 ohms, seventy five ohms, and 95 ohms.
This metric is used to calculate propagation delay, and is commonly around eighty five% for prime quality coaxial cables. These cables terminate in Amphenol RF Brand (to not be confused with the cheaper Amphenol Connex) BNC male connectors (see picture). The cable is RG58 A/U 50 ohm and is available in each 25' (7.62 meters) and 50' (15.24 meters) lengths, with or with out SO239 adapters.
F-type connectors are also referred to as F-81 connectors and are specified by IEC commonplace IEC . VELOCITY OF PROPAGATION - Velocity of propagation, commonly known as velocity, is the ratio of the pace of the flow of an electric present in an insulated cable to the pace of sunshine. All insulated cables have this ratio and it is expressed in a %- age. In the case of coaxial cables with polyethylene dielectric, this ratio is within the range of sixty five% - sixty six%.
The cable TV and closed circuit TV methods use miles of this kind cable. In coaxial cable, the "go" wire is the center conductor, some form of copper wire, stable or stranded, of comparatively small diameter, around which is a very heavy insulation - the dielectric. But the "return" wire is now not one other equivalent wire. Often referred to as 'Velocity' or 'VF', velocity of propagation refers back to the ratio of the speed of a wave via a bodily medium against the pace of light in a vacuum.
0 notes
Text
Types Of Coaxial Cables And How They Are Specified
These cables can be used with our choke balun that comes with the standard Buddipole. They can be used with our Triple Ratio Switch Balun (TRSB), or for any other antenna system. These are premium, made in USA MILSPEC-17 coaxial cables with custom injection-molded pressure reliefs and captive weatherproof end caps. We designed the over-molded strain reliefs with retention slots to hold a hook-and-loop one-wrap strap (included) which can be used to safe rolled up coax or secure the coax to a mast, for example. Glenair high-performance Coax cables are constructed with silver plated conductors, insulated with fluoropolymer material, and completed with single or double layers of conductive shielding and applicable jacket.
Hitachi Cable America’s coaxial cables are tested with equipment that simulates a wide variety of environmental and electrical efficiency circumstances. As a end result, the expectations for positive, dependable and trouble free operations are of the highest degree of confidence.
Hitachi Cable America provides a full line of nice wire coaxials and twinaxials from 36 to 50 AWG. Many of our cables use Hitachi developed copper alloy to offer superior conductivity, flexibility and tensile strength. We have a long history of precision wire growth for the medical business – for ultrasound, catheter, endoscopy and surgical purposes, plus industrial inspection utilizing ultrasound applied sciences. Think of Hitachi Cable America in your subsequent nice wire improvement program. If you aren't conscious about the cable you must utilize, or have an unfamiliar connector/meeting you want duplicated, Contact us and we can help design the coaxial cable meeting or match the connectors required.
IMPEDANCE - Impedance is a term expressing the ratio of voltage to present in a cable of infinite size. In the case of coaxial cables, impedance is expressed when it comes to "ohms impedance".The coaxial cables usually fall into three primary lessons; 50 ohms, seventy five ohms, and 95 ohms.
This metric is used to calculate propagation delay, and is commonly around eighty five% for prime quality coaxial cables. These cables terminate in Amphenol RF Brand (to not be confused with the cheaper Amphenol Connex) BNC male connectors (see picture). The cable is RG58 A/U 50 ohm and is available in each 25' (7.62 meters) and 50' (15.24 meters) lengths, with or with out SO239 adapters.
F-type connectors are also referred to as F-81 connectors and are specified by IEC commonplace IEC . VELOCITY OF PROPAGATION - Velocity of propagation, commonly known as velocity, is the ratio of the pace of the flow of an electric present in an insulated cable to the pace of sunshine. All insulated cables have this ratio and it is expressed in a %- age. In the case of coaxial cables with polyethylene dielectric, this ratio is within the range of sixty five% - sixty six%.
The cable TV and closed circuit TV methods use miles of this kind cable. In coaxial cable, the "go" wire is the center conductor, some form of copper wire, stable or stranded, of comparatively small diameter, around which is a very heavy insulation - the dielectric. But the "return" wire is now not one other equivalent wire. Often referred to as 'Velocity' or 'VF', velocity of propagation refers back to the ratio of the speed of a wave via a bodily medium against the pace of light in a vacuum.
0 notes
Text
Types Of Coaxial Cables And How They Are Specified
These cables can be used with our choke balun that comes with the standard Buddipole. They can be used with our Triple Ratio Switch Balun (TRSB), or for any other antenna system. These are premium, made in USA MILSPEC-17 coaxial cables with custom injection-molded pressure reliefs and captive weatherproof end caps. We designed the over-molded strain reliefs with retention slots to hold a hook-and-loop one-wrap strap (included) which can be used to safe rolled up coax or secure the coax to a mast, for example. Glenair high-performance Coax cables are constructed with silver plated conductors, insulated with fluoropolymer material, and completed with single or double layers of conductive shielding and applicable jacket.
Hitachi Cable America’s coaxial cables are tested with equipment that simulates a wide variety of environmental and electrical efficiency circumstances. As a end result, the expectations for positive, dependable and trouble free operations are of the highest degree of confidence.
Hitachi Cable America provides a full line of nice wire coaxials and twinaxials from 36 to 50 AWG. Many of our cables use Hitachi developed copper alloy to offer superior conductivity, flexibility and tensile strength. We have a long history of precision wire growth for the medical business – for ultrasound, catheter, endoscopy and surgical purposes, plus industrial inspection utilizing ultrasound applied sciences. Think of Hitachi Cable America in your subsequent nice wire improvement program. If you aren't conscious about the cable you must utilize, or have an unfamiliar connector/meeting you want duplicated, Contact us and we can help design the coaxial cable meeting or match the connectors required.
IMPEDANCE - Impedance is a term expressing the ratio of voltage to present in a cable of infinite size. In the case of coaxial cables, impedance is expressed when it comes to "ohms impedance".The coaxial cables usually fall into three primary lessons; 50 ohms, seventy five ohms, and 95 ohms.
This metric is used to calculate propagation delay, and is commonly around eighty five% for prime quality coaxial cables. These cables terminate in Amphenol RF Brand (to not be confused with the cheaper Amphenol Connex) BNC male connectors (see picture). The cable is RG58 A/U 50 ohm and is available in each 25' (7.62 meters) and 50' (15.24 meters) lengths, with or with out SO239 adapters.
F-type connectors are also referred to as F-81 connectors and are specified by IEC commonplace IEC . VELOCITY OF PROPAGATION - Velocity of propagation, commonly known as velocity, is the ratio of the pace of the flow of an electric present in an insulated cable to the pace of sunshine. All insulated cables have this ratio and it is expressed in a %- age. In the case of coaxial cables with polyethylene dielectric, this ratio is within the range of sixty five% - sixty six%.
The cable TV and closed circuit TV methods use miles of this kind cable. In coaxial cable, the "go" wire is the center conductor, some form of copper wire, stable or stranded, of comparatively small diameter, around which is a very heavy insulation - the dielectric. But the "return" wire is now not one other equivalent wire. Often referred to as 'Velocity' or 'VF', velocity of propagation refers back to the ratio of the speed of a wave via a bodily medium against the pace of light in a vacuum.
0 notes
Text
Types Of Coaxial Cables And How They Are Specified
These cables can be used with our choke balun that comes with the standard Buddipole. They can be used with our Triple Ratio Switch Balun (TRSB), or for any other antenna system. These are premium, made in USA MILSPEC-17 coaxial cables with custom injection-molded pressure reliefs and captive weatherproof end caps. We designed the over-molded strain reliefs with retention slots to hold a hook-and-loop one-wrap strap (included) which can be used to safe rolled up coax or secure the coax to a mast, for example. Glenair high-performance Coax cables are constructed with silver plated conductors, insulated with fluoropolymer material, and completed with single or double layers of conductive shielding and applicable jacket.
Hitachi Cable America’s coaxial cables are tested with equipment that simulates a wide variety of environmental and electrical efficiency circumstances. As a end result, the expectations for positive, dependable and trouble free operations are of the highest degree of confidence.
Hitachi Cable America provides a full line of nice wire coaxials and twinaxials from 36 to 50 AWG. Many of our cables use Hitachi developed copper alloy to offer superior conductivity, flexibility and tensile strength. We have a long history of precision wire growth for the medical business – for ultrasound, catheter, endoscopy and surgical purposes, plus industrial inspection utilizing ultrasound applied sciences. Think of Hitachi Cable America in your subsequent nice wire improvement program. If you aren't conscious about the cable you must utilize, or have an unfamiliar connector/meeting you want duplicated, Contact us and we can help design the coaxial cable meeting or match the connectors required.
IMPEDANCE - Impedance is a term expressing the ratio of voltage to present in a cable of infinite size. In the case of coaxial cables, impedance is expressed when it comes to "ohms impedance".The coaxial cables usually fall into three primary lessons; 50 ohms, seventy five ohms, and 95 ohms.
This metric is used to calculate propagation delay, and is commonly around eighty five% for prime quality coaxial cables. These cables terminate in Amphenol RF Brand (to not be confused with the cheaper Amphenol Connex) BNC male connectors (see picture). The cable is RG58 A/U 50 ohm and is available in each 25' (7.62 meters) and 50' (15.24 meters) lengths, with or with out SO239 adapters.
F-type connectors are also referred to as F-81 connectors and are specified by IEC commonplace IEC . VELOCITY OF PROPAGATION - Velocity of propagation, commonly known as velocity, is the ratio of the pace of the flow of an electric present in an insulated cable to the pace of sunshine. All insulated cables have this ratio and it is expressed in a %- age. In the case of coaxial cables with polyethylene dielectric, this ratio is within the range of sixty five% - sixty six%.
The cable TV and closed circuit TV methods use miles of this kind cable. In coaxial cable, the "go" wire is the center conductor, some form of copper wire, stable or stranded, of comparatively small diameter, around which is a very heavy insulation - the dielectric. But the "return" wire is now not one other equivalent wire. Often referred to as 'Velocity' or 'VF', velocity of propagation refers back to the ratio of the speed of a wave via a bodily medium against the pace of light in a vacuum.
0 notes
Text
Cable
HLF 400 RF Cable Manufacturers in India
Eteily offers an extensive range of RF cables featuring outstanding electrical performance, mechanical characteristics, low loss and high frequency for both Indoor and Outdoor Applications. Our range includes RG series, HLF series and embedded thin cables for each market or application. Our highly demanded shielded Cable design makes coaxial cables far less sensitive to external interference such as damage or electromagnetic fields to large extent. We are recognized for Best Quality cables at reasonable price and are counted among the best RF cables suppliers in India.
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HWN, WX4NHC at National Hurricane Center to Activate for Tropical Storm Barry
Responding to Tropical Storm Barry, the Hurricane Watch Net (HWN) and WX4NHC— the Amateur Radio station at the National Hurricane Center (NHC) in Miami — have announced plans to activate.
The HWN will activate today (July 12) at 2300 UTC on both 14.325 MHz and 7.268 MHz.
“We will operate on 14.325
for as long as propagation allows and will suspend operations on 7.268 MHz at 0300 UTC,” HWN Manager Bobby Graves, KB5HAV, said. “Net operations will resume Saturday morning at 1230 UTC (on both 14.325 MHz and 7.268 MHz) or as soon as the Waterway Net concludes operation.” Graves said that once the net activates on Saturday, it will remain in operation until further notice.
youtube
Graves said the HWN also will be available to provide back-up communication to official agencies in the affected area and will be collecting and reporting “significant damage assessment data” to FEMA officials at the National Hurricane Center.
WX4NHC will activate July 12 at 8 PM EDT (July 13 at 0000 UTC) and operate through landfall on Saturday.
“We encourage all ham operators in the affected area to take all safety precautions needed and comply with evacuation orders from authorities,” WX4NHC Assistant Manager Julio Ripoll, WD4R, said. The Hurricane Watch Net and WX4NHC typically coordinate their activities, with the HWN reporting weather data observed by participants to the NHC via WX4NHC.
Hurricane hunters report that Tropical Storm Barry is gaining strength. Forecasters predict additional strengthening before landfall; Barry is expected to be a hurricane when the center reaches the Louisiana coast. The NHC says dangerous storm surge, heavy rainfall, and high wind conditions are expected across the north-central Gulf Coast.
The heavy rainfall could generate additional flooding in the region. According to NHC forecasters, Barry is expected to produce total rain accumulations of 10 to 20 inches over south-central and southeast Louisiana as well as over southwest Mississippi, with isolated maximum amounts of 25 inches. “These rains are expected to lead to dangerous, life-threatening flooding over portions of the central Gulf Coast into the Lower Mississippi Valley,” the NHC forecast said
As of 1500 UTC, Barry was about 100 miles southwest of the mouth of the Mississippi River and some 115 miles south-southeast of Morgan City, Louisiana. The storm now boasts maximum sustained winds of 65 MPH and continues to move west-northwest at 5 MPH.
“A motion toward the northwest is expected to begin later today, followed by a turn toward the north Saturday night,” the NHC forecast said. “On the forecast track, the center of Barry will approach the central or southeastern coast of Louisiana through tonight and then make landfall over the central Louisiana coast on Saturday.”
Northern Florida ARES Section Emergency Coordinator Karl Martin, KG4HBN, has told ARRL that his team is monitoring Barry but does not expect the storm to affect Northern Florida. Martin said no plans are in place to formally activate the North Florida ARES Net.
Source:ARRL
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See More about New FT4 Here “At about 20 minutes into the presentation, Joe describes FT4 as being asynchronous, meaning that you can start tran... Read more
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