2024 J7bfek.php

Mar 11, 2020 · The Jackite vs Ebay pole comparison showed you how you can spend a few bucks and get a good single or dual band HF antenna. You can spend about $25 to turn the Jackite 31′ pole into an all-band HF Antenna that will give you all bands between 80 and 10 meters, without a tuner. There are mods for 160m and it might even work on 6m with some tuning. . Microbiology bachelor

The current distribution shows the dominant side of the G7FEK to be the 40m side as one would expect, but the 80m antenna also. contributes some energy to the overall radiation pattern. The antenna model indicates that the G7FEK is omni-directional on this. band with a 250KHz bandwidth between the 2:1 SWR points.Hello Mike. Let me introduce my self my name is XXX and I have been a radio ham for fifty years, I love antenna building and playing with the big amps 1.5Kw plus it’s fun, the reason why I have got in touch with you is because a friend of mine who has the internet told me about a antenna from the UK the G7FEK antenna seeing a copy of the screen from the internet it looks like the one I was ...I was going to have a go at constructing a G7FEK ( http://www.g7fek.co.uk/blogus/newsshow.php?page=80m_Antenna_for_small_gar_49493 ) and wondered…G7FEK Antenna. Posted on October 19, 2018 Updated on November 4, 2018. Just completed building a G7FEK antenna. Seems to work fine after a little bit of tweeking of the two counterpoise / radials.(Used 65ft and 33ft) Now have good SWR on both 80m and 40m without a tuner.This antenna was first conceived as a simple dual band antenna in 1988, in an attempt to achieve sensible dual band operation in a small garden of 14m (46 ft) length. Evolving from a simple end-fed Marconi for 80m, the idea was to use the opposing harmonicrelationships of two ¼ wave elements so that they could be fed on odd harmonics without ...© 1988 - 2009 Mike Dennis, G7FEK. - Website: www.g7fek.co.uk - updated: 27 March 2010 G7FEK Limited Space Antenna G7FEK Multi-band “Nested Marconi” Antenna ...We would like to show you a description here but the site won’t allow us.What is full size – and how close do we have to be? What is full size on 80m – ¼ wave 66ft, ½ wave 133ft – other bands ½ wave multiples not matched by ATU/Coupler ( v.high Z)The eBay pole on an old camera tripod is very very inexpensive (less than $20) but the antenna pole is flimsy for all but the lightest antenna. The Jackite pole on the other hand is very robust, but also a lot more expensive. It also requires a sturdy mount, as it is much heavier and has a higher wind load. So the winner really depends on your ...The eBay pole on an old camera tripod is very very inexpensive (less than $20) but the antenna pole is flimsy for all but the lightest antenna. The Jackite pole on the other hand is very robust, but also a lot more expensive. It also requires a sturdy mount, as it is much heavier and has a higher wind load. So the winner really depends on your ... Going over how I went about constructing and fitting the G7FEK Limited Space Antenna on my small suburban lot. I live in a rental property so I've gone about...May 4, 2016 · I've been using xampp for quite a while but suddenly none of my .php files are working now! I get this error message: Access forbidden! You don't have permission to access the requested object. It is either read-protected or not readable by the server. If you think this is a server error, please contact the webmaster. © 1988 - 2009 Mike Dennis, G7FEK. - Website: www.g7fek.co.uk - updated: 27 March 2010 G7FEK Limited Space Antenna G7FEK Multi-band “Nested Marconi” Antenna ... G7FEK Profile and History. G7FEK now operates mostly portable and low power (QRP), including a 100% Solar Powered station, plus various special event stations. Choose from a wide range of antenna types, including single-band, dual-band, multi-band, vertical, trap vertical, wire, HF antennas. Wire Antennas UK receive antenna systems feature the best designs available for HF DXing, as well as for “AM DXing” and for the Short Wave Listening bands (SWL). Maximize your signal and minimize noise with ...© 1988 - 2009 Mike Dennis, G7FEK. - Website: www.g7fek.co.uk - updated: 27 March 2010 G7FEK Limited Space Antenna G7FEK Multi-band “Nested Marconi” Antenna ... May 4, 2016 · I've been using xampp for quite a while but suddenly none of my .php files are working now! I get this error message: Access forbidden! You don't have permission to access the requested object. It is either read-protected or not readable by the server. If you think this is a server error, please contact the webmaster. my search has led me to consider making my own ladder line and trying the G7FEK antenna. I have enough room for 4-8 elevated radials in my back yard which i think will work with it.Besides regular improvements, new improvements create the possibility of further improvements of capabilities and services available with the program. MMANA-GAL is an antenna-analyzing tool based on the moment method, which was introduced in MININEC. The program provides ability for changing the language of signs and messages of the program.Here’s the final arrangement. The resistor emulating the ground resistance of the radial system is shown as a small square, and the 50 ohm feed point is shown as a circle.Here’s the final arrangement. The resistor emulating the ground resistance of the radial system is shown as a small square, and the 50 ohm feed point is shown as a circle. © 1988 - 2009 Mike Dennis, G7FEK. - Website: www.g7fek.co.uk - updated: 27 March 2010 G7FEK Limited Space Antenna G7FEK Multi-band “Nested Marconi” Antenna ...The eBay pole on an old camera tripod is very very inexpensive (less than $20) but the antenna pole is flimsy for all but the lightest antenna. The Jackite pole on the other hand is very robust, but also a lot more expensive. It also requires a sturdy mount, as it is much heavier and has a higher wind load. So the winner really depends on your ... As I continue my mini-series on the G7FEK, we now do some listening on 80 meters followed by local contacts around VK. This video proves you can operate 80m ... © 1988 - 2009 Mike Dennis, G7FEK. - Website: www.g7fek.co.uk - updated: 16 March 2009 G7FEK Limited Space Antenna G7FEK Multi-band “Nested Marconi” Antenna ...Sep 2, 2023 · Contribute. to QRZ. G7FEK England. Login is required for additional detail. QSL: QSL via EQSL *Only* - No Physical Cards. Email: Login required to view. Ham Member Lookups: 11078. Biography. Echolink iphone App I'm sure that, on occasion, there is a case for accessing your repeater users in your local community remotely when you are away, need to contact someone, and there is absolutely no other gateway or repeater in range, and they re not on Skype and don't have a telephone.Oct 19, 2018 · G7FEK Antenna. Posted on October 19, 2018 Updated on November 4, 2018. Just completed building a G7FEK antenna. Seems to work fine after a little bit of tweeking of the two counterpoise / radials.(Used 65ft and 33ft) Now have good SWR on both 80m and 40m without a tuner. Contribute. to QRZ. G7FEK England. Login is required for additional detail. QSL: QSL via EQSL *Only* - No Physical Cards. Email: Login required to view. Ham Member Lookups: 11078. Biography.G7FEK Amateur Radio Station is based in North Wiltshire, England and can be heard on Shortwave and VHF Amateur Radio bands. G7FEK now operates mostly portable and low power (QRP), including a 100% Solar Powered station, plus various special event stations. Here you will find interesting regular posts relating to Amateur and CB Radio, Astronomy ...Nov 23, 2014 · folding and twisting the wire back on itself (No need to cut it). When you have tuned resonance to 3.7 and 7.1 MHz, the antenna is<br />. ready for use on all other bands. Initially, you might want to make the wires a little longer than shown to allow for a wider range of<br />. This link is listed in our web site directory since Friday Oct 18 2013, and till today " G7FEK multi-band Antenna " has been followed for a total of 1208 times. So far received 5 votes for a total score of 9.40/10. The scale is 1 - 10, with 1 being poor and 10 being excellent.Ham radio PDF repository curated by N5DUX. All amateur radio-related projects, tips, tricks, and tools This link is listed in our web site directory since Friday Oct 18 2013, and till today " G7FEK multi-band Antenna " has been followed for a total of 1208 times. So far received 5 votes for a total score of 9.40/10. The scale is 1 - 10, with 1 being poor and 10 being excellent. © 1988 - 2009 Mike Dennis, G7FEK. - Website: www.g7fek.co.uk - updated: 27 March 2010 G7FEK Limited Space Antenna G7FEK Multi-band “Nested Marconi” Antenna ...Feb 13, 2023 · Another good option that I recently came across is the G7FEK antenna. G7FEK describes his antenna as “a 46-ft., multi-band antenna for small gardens that works well on 80 meters.”. And, according to G7FEK, its impedance is nearly 50 Ω on 40 meters, 30 meters, 17 meters, 15 meters, and 12 meters, and it can be used with a tuner on 20 meters ... my search has led me to consider making my own ladder line and trying the G7FEK antenna. I have enough room for 4-8 elevated radials in my back yard which i think will work with it.A 46 ft multi band antenna for small gardens that works well on 80 meters Main bands (@~50 ohm) are 80m / 40m / 30m / 17m / 15m / 12m Other bands (see text): 20m / 10m. 38 ft (11.7m) 8 ft (2.5m) 24 ft (7.4m) 50 Ohm Coaxial. This antenna was first conceived as a simple dual band antenna in 1988, in an attempt to achieve sensible dual band ...The award, announced by the International Dark Sky Association, confirmed Galloway as one of the best places for stargazing in the world.© 1988 - 2009 Mike Dennis, G7FEK. - Website: www.g7fek.co.uk - updated: 27 March 2010 G7FEK Limited Space Antenna G7FEK Multi-band “Nested Marconi” Antenna ...K2GL was and is a legend. He had..... serious money and built one of the first super stations. A tale I heard from a ham who spent a lot of time operating there is that one of the neighbors had some objections to the various towers and antennas, so K2GL bought the neighbors house and that was that. Small Garden Multi Band HF Antenna 80m / 40m / 30m /17m /15m / 12m. This HF multi band antenna for small gardens that works well on 80 meters Main bands (@~50 ohm) are .. £63.00 Ex Tax:£63.00. Add to Cart. G7FEK 3,5-28. 1631. Neohodnoceno. 1 250 Kč 1 033,06 Kč bez DPH. Přidat do košíku. Drátová anténa malých rozměrů primárně pro pásma 3,5-7-14 MHz. S anténním tunerem je možné kompromisně používat i na ostatních KV pásmech. Anténa vhodná do malých prostorů. Detailní informace.© 1988 - 2009 Mike Dennis, G7FEK. - Website: www.g7fek.co.uk - updated: 27 March 2010 G7FEK Limited Space Antenna G7FEK Multi-band “Nested Marconi” Antenna ... Choose from a wide range of antenna types, including single-band, dual-band, multi-band, vertical, trap vertical, wire, HF antennas. Wire Antennas UK receive antenna systems feature the best designs available for HF DXing, as well as for “AM DXing” and for the Short Wave Listening bands (SWL). Maximize your signal and minimize noise with ...G7FEK’s original “Nested Marconi Antenna” was first designed in 1988 and comprised two quarter-waves in parallel, fed against ground in inverted L. The original antenna was roughly 50 feet long x 22 feet high. During 2007 the antenna was optimised and tested at sunspot minimum to improve performance and multi-band operation. A 14 meters ( 46 ft ) multi band antenna for small gardens that works well on 80 meters Main bands (@~50 ohm) are 80m / 40m / 30m / 17m / 15m / 12m. Evolving from a simple end-fed Marconi for 80m, this antenna design was created by Mike G7FEK ( reproduced with consent ).The idea was to use the opposing harmonic .Echolink iphone App I'm sure that, on occasion, there is a case for accessing your repeater users in your local community remotely when you are away, need to contact someone, and there is absolutely no other gateway or repeater in range, and they re not on Skype and don't have a telephone.G7FEK Limited Space Antenna G7FEK Multi-band “Nested Marconi” Antenna - 2008 Version (rev 5) A 46 ft multi band antenna for small gardens that works well on 80 meters Main bands (@~50 ohm) are 80m / 40m / 30m / 17m / 15m / 12m Other bands (see text): 20m / 10m 8 ft (2.5m)I was going to have a go at constructing a G7FEK ( http://www.g7fek.co.uk/blogus/newsshow.php?page=80m_Antenna_for_small_gar_49493 ) and wondered… The resource is currently listed in dxzone.com in a single category. The main category is Multiband Antennas that is about Multiband Antennas. This link is listed in our web site directory since Tuesday Mar 30 2021, and till today " G7FEK antenna revisited " has been followed for a total of 415 times. So far received 2 votes for a total score ...PHP is a server scripting language, and a powerful tool for making dynamic and interactive Web pages. PHP is a widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. Start learning PHP now » Easy Learning with "PHP Tryit"Ham radio PDF repository curated by N5DUX. All amateur radio-related projects, tips, tricks, and toolsI’ve worked with vertical antennas over many years and I’ve noticed that in small restricted locations such as the back yard of my house (which is only 7.5 x 4.5m), straight radials May 13, 2009 · Advantages. Small size (46ft long x 24ft high) 50 ohm Coaxial Feed. Multi-band operation for 80m to 10m. ATU less operation possible on up to 4 primary bands (80m/40m/20m/15m) Low angle of radiation dominant (good for DX) Easy to construct and set up. May 31, 2018 · Going over how I went about constructing and fitting the G7FEK Limited Space Antenna on my small suburban lot. I live in a rental property so I've gone about... The resource is currently listed in dxzone.com in a single category. The main category is Multiband Antennas that is about Multiband Antennas. This link is listed in our web site directory since Tuesday Mar 30 2021, and till today " G7FEK antenna revisited " has been followed for a total of 415 times. So far received 2 votes for a total score ...Oct 15, 2014 · G7FEK’s original “Nested Marconi Antenna” was first designed in 1988 and comprised two quarter-waves in parallel, fed against. ground in inverted L. The original antenna was roughly 50 feet long x 22 feet high. During 2007 the antenna was optimised and. G7FEK’s original “Nested Marconi Antenna” was first designed in 1988 and comprised two quarter-waves in parallel, fed against ground in inverted L. The original antenna was roughly 50 feet long x 22 feet high. During 2007 the antenna was optimised and tested at sunspot minimum to improve performance and multi-band operation.Basic Set up ProcedureStep 1 - Impedance matchingTo start, experiment with the counterpoise length & position for VSWR dip somewhere around 3.7 MHz and 7.1 MHz. The exactresonant frequency is not important yet and will be fine tuned afterwards.May 2, 2009 · Iain raised the pole to full height and did the first MFJ analyser tests. VSWR was 1.2:1 on 3.85 and 7.3 MHz - a little high in frequency but bandwidth looked about right. G7FEK Profile and History. G7FEK now operates mostly portable and low power (QRP), including a 100% Solar Powered station, plus various special event stations.A longer / lower antenna reduces efficien-cy and bandwidth on 80m by shortening the vertical radiator and increasing loading while lowering radiation resist-ance. The antenna has been tested well and it is best to use the recommended dimensions for all round multi-bandperformance. The Basic G7FEK Antenna.Here’s the final arrangement. The resistor emulating the ground resistance of the radial system is shown as a small square, and the 50 ohm feed point is shown as a circle. Small Garden Multi Band HF Antenna 80m / 40m / 30m /17m /15m / 12m. This HF multi band antenna for small gardens that works well on 80 meters Main bands (@~50 ohm) are .. £63.00 Ex Tax:£63.00. Add to Cart. Choose from a wide range of antenna types, including single-band, dual-band, multi-band, vertical, trap vertical, wire, HF antennas. Wire Antennas UK receive antenna systems feature the best designs available for HF DXing, as well as for “AM DXing” and for the Short Wave Listening bands (SWL). Maximize your signal and minimize noise with ...Jul 23, 2009 · Hello Mike. Let me introduce my self my name is XXX and I have been a radio ham for fifty years, I love antenna building and playing with the big amps 1.5Kw plus it’s fun, the reason why I have got in touch with you is because a friend of mine who has the internet told me about a antenna from the UK the G7FEK antenna seeing a copy of the screen from the internet it looks like the one I was ... PHP is a server scripting language, and a powerful tool for making dynamic and interactive Web pages. PHP is a widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. Start learning PHP now » Easy Learning with "PHP Tryit" © 1988 - 2009 Mike Dennis, G7FEK. - Website: www.g7fek.co.uk - updated: 27 March 2010 G7FEK Limited Space Antenna G7FEK Multi-band “Nested Marconi” Antenna ... A longer / lower antenna reduces efficien-cy and bandwidth on 80m by shortening the vertical radiator and increasing loading while lowering radiation resist-ance. The antenna has been tested well and it is best to use the recommended dimensions for all round multi-bandperformance. The Basic G7FEK Antenna.G7FEK Amateur Radio Station is based in North Wiltshire, England and can be heard on Shortwave and VHF Amateur Radio bands. G7FEK now operates mostly portable and low power (QRP), including a 100% Solar Powered station, plus various special event stations. Here you will find interesting regular posts relating to Amateur and CB Radio, Astronomy ...The enclosed EZNEC model has been modified and is based that the far end of the main wire is strung from a support such as a tower. The normal G7FEK model shows the antenna stretched out horizontally at just over 7m above ground level. K2GL was and is a legend. He had..... serious money and built one of the first super stations. A tale I heard from a ham who spent a lot of time operating there is that one of the neighbors had some objections to the various towers and antennas, so K2GL bought the neighbors house and that was that.Going over how I went about constructing and fitting the G7FEK Limited Space Antenna on my small suburban lot. I live in a rental property so I've gone about...The Autek VA1 shows the antenna also has a min SWR 4.5:1 at 13.28MHz 2. The antenna measurements were taken in the shack at the end of a 10m RG213 coax with a 1.1m section of Mini-8 coax.Meteorscan.com live feed is for detetcting meteors using a VHF radar signal. During periods of enhanced tropospheric conditions on VHF, the source signal can be detected directly along with the reflections from meteor ionisation and will be seen on the live feed. The G5RV has a reasonable SWR on 80, 40, 20, 15, and 12 meters. It is not an acceptable performer on 30, 17, or 10 meters. SWR is actually better with 300-ohm transmitting line than with the 450 ohm line normally used. While the G5RV requires an antenna tuner, it is very efficient on at least 5 bands.© 1988 - 2009 Mike Dennis, G7FEK. - Website: www.g7fek.co.uk - updated: 27 March 2010 G7FEK Limited Space Antenna G7FEK Multi-band “Nested Marconi” Antenna ...We would like to show you a description here but the site won’t allow us.Looking at the model above, the top of the vertical section is only 7.5 above ground. The horizontal section then slowly rises to a maximum of only 11m – so this solution is possible for operators will the most demanding QTH’s.The Autek VA1 shows the antenna also has a min SWR 4.5:1 at 13.28MHz 2. The antenna measurements were taken in the shack at the end of a 10m RG213 coax with a 1.1m section of Mini-8 coax. Description: Advantages. Small size (46ft long x 24ft high) 50 ohm Coaxial Feed. Multi-band operation for 80m to 10m. ATU less operation possible on up to 4 primary bands (80m/40m/20m/15m) Low angle of radiation dominant (good for DX) Easy to construct and set up. Product is not in production.

This antenna was first conceived as a simple dual band antenna in 1988, in an attempt to achieve sensible dual band operation in a small garden of 14m (46 ft) length. Evolving from a simple end-fed Marconi for 80m, the idea was to use the opposing harmonicrelationships of two ¼ wave elements so that they could be fed on odd harmonics without ... . Aba therapy training near me

The resource is currently listed in dxzone.com in a single category. The main category is Multiband Antennas that is about Multiband Antennas. This link is listed in our web site directory since Tuesday Mar 30 2021, and till today " G7FEK antenna revisited " has been followed for a total of 415 times. So far received 2 votes for a total score ... 5 Band 1/4 wave Telescopic Antenna. G7FEK LIMITED SPACE ANTENNA( Nested Marconi Antenna) 80, 40, 30, 17, 15 , 12 m see text for 20 & 10m operationA longer / lower antenna reduces efficien-cy and bandwidth on 80m by shortening the vertical radiator and increasing loading while lowering radiation resist-ance. The antenna has been tested well and it is best to use the recommended dimensions for all round multi-bandperformance. The Basic G7FEK Antenna. Small Garden Multi Band HF Antenna 80m / 40m / 30m /17m /15m / 12m. This HF multi band antenna for small gardens that works well on 80 meters Main bands (@~50 ohm) are .. £63.00 Ex Tax:£63.00. Add to Cart. Jan 17, 2009 · 144 MHz SSB - The Forgotten Mode. Poor HF propagation should not stop the real radio Amateur. 144 SSB (2 meter SSB) offers regular openings into Europe and... ..can also be used for local nets on your vertical, working well under weak signal conditions. When I first became a licensed radio amateur in the late 1980's, the vast majority of my ... © 1988 - 2009 Mike Dennis, G7FEK. - Website: www.g7fek.co.uk - updated: 27 March 2010 G7FEK Limited Space Antenna G7FEK Multi-band “Nested Marconi” Antenna ...5 Band 1/4 wave Telescopic Antenna. G7FEK LIMITED SPACE ANTENNA( Nested Marconi Antenna) 80, 40, 30, 17, 15 , 12 m see text for 20 & 10m operation Here’s the final arrangement. The resistor emulating the ground resistance of the radial system is shown as a small square, and the 50 ohm feed point is shown as a circle.Oct 19, 2018 · G7FEK Antenna. Posted on October 19, 2018 Updated on November 4, 2018. Just completed building a G7FEK antenna. Seems to work fine after a little bit of tweeking of the two counterpoise / radials.(Used 65ft and 33ft) Now have good SWR on both 80m and 40m without a tuner. Apr 25, 2015 · Back in the 1980s when I was first licensed, the 2m band was fairly busy much of the time. There was a call for a shift from 25 KHz to 12.5 KHz channel spacing and that eventually became the standard, doubling the number of FM channels. You got a great answer to your question about counterpoise so I wont rehash that. I've used a g7fek for a couple of years now, and it works great even if your configuration isn't optimal. For example, on mine, I have the feedpoint 6 feet above ground, and instead of running counterpoise, I ran two long radial with the last 15 feet or so elevIf you are only interested in the LF bands, an inverted L (approx 40ft high and 132ft long) is a good simple to construct antenna which produces very good results, especially if you don t have a lot of space for radials or elevated counterpoise wires. Martin G8JNJ 22/04/2012 V2.2. Martin G8JNJ highlights a very interesting antenna designed by Mike G7FEK here:-. The G7FEK antenna goes several stages further than the simple single band End Fed Zepp. G7FEK has produced a design for Multi-Band operation claimed to offer much improved performance over a half sized G5RV or 'Windom' antenna while additionally providing access ...folding and twisting the wire back on itself (No need to cut it). When you have tuned resonance to 3.7 and 7.1 MHz, the antenna is<br />. ready for use on all other bands. Initially, you might want to make the wires a little longer than shown to allow for a wider range of<br />.This new section contains links to my antenna articles. Please click on the links below to view the articles. Here you will find articles about several useful antenna designs for both HF and VHF use, as well as portable and mobile antennas. 80m Antenna for Small Gardens G7FEK Antenna Tested at Norman Lockyer Observatory in Sidmouth G7FEK ... “Due to the hideousness of Skype 4, I will not be making a Skype 4 version of this product. Unfortunately Skype users are restricted to just one software product and when it goes bad, as Skype has done with version 4, you are stuck.May 2, 2009 · Iain raised the pole to full height and did the first MFJ analyser tests. VSWR was 1.2:1 on 3.85 and 7.3 MHz - a little high in frequency but bandwidth looked about right. .

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