G3TXQ 6 Band Hexbeam 40m single element add on kit
Some of you may remember the 7 band Hexbeam that was in production a few years ago. Due to the complexity of parts and time taken to make plus time vs profit the project was shelved until I could come up with something that could replace it and in some ways better it. After many months of testing, the new 40m kit is now available to retrofit to all my previously produced G3TXQ 6 band Hexbeams.
Advantages to the kit vs the old 7 band G3TXQ Hexbeam.
Weight, its only a few kg to add on to your existing 6 band G3TXQ Hexbeam.
Cost, you no longer need to buy a new antenna to get a 7 band G3TXQ Hexbeam, you just buy the kit.
Ease of build, it only takes approx 1 hour to fit the 40m element to the 6 band G3TXQ Hexbeam.
During the modelling of the 40m element I noted some significant points.
1. Due to the shape of the 40m single element free space EZNEC modeling is showing slight gain of 3.77 dBi over the 2.14dBi of a dipole in free space which is approx. 75% of a single Db, OK not a lot BUT it is gain over a dipole which is important.
2. With the base plate at a working height of 10m EZNEC shows the 15m element has increased its forward gain from 9.12 dBi to 10.35 dBi and the FB from 16.51 dB to 16.94 dB also the beam width has narrowed giving more rejection on the sides but forming lobes towards the rear.
3. With the plus points there is always a downside, due to the size and shape of the element it is unfortunatly narrow banded, approx 60 Khz below 1:5 100 Khz below 2:1 and 200 Khz below 3:1 so well within the range of most built in radio ATU’s. You can specify which freq you would like the element centered at so you can enjoy the part of the band you favour.
These findings gave me the encoragment to pursue this project to the 6 band G3TXQ Hexbeam making it a very attractive addition to the already very popular antenna.
The 40m single element kit comprises of:
6 x spreader extension arms plus fittings
1 x vertical extension arm plus fitting
1 x high power (2KW) matching balun to enable direct 50 Ohm feedline connection
1 x 40m wire element
Specifications
Turning radius: 4.1m
Forward gain in free space 3.77 dBi
Weight approx 3.5KG
40m Element Peak Gain shown over a dipole in Freespace Dipole in Freespace = 2.14dBi
See More:http://www.g3txq-hexbeam.com/index.php/shop.html
App - Mobile
SmartSDR for iOS v3.9.12 Now Available
Marcus, DL8MRE announces that release of SmartSDR for iOS v3.9.12 is now available for download or update from the Apple App Store. SmartSDR is a full... Read more
SignalID – Automatic Radio Signal Identification for Android
There’s an incredible amount of radio signals. It’s impossible to know them all, let alone recognize them. So why not get help from Signal... Read more
EchoHam version v2.10 has been released
EchoHam allows Amateur Radio operators to use the Echolink network from their Mac. You must be a licensed Amateur Radio operator to use this software.... Read more
SatSat for IOS version 1.4.11 has been released
SatSat, by Fabrice Aneche is a satellite tracking software, for radio amateurs, scientists or hobbyists. It displays current and next passes for any s... Read more
Digital Modes
FT8DMC 3rd Anniversary-Activity Days 2020
To commemorate our 3rd anniversary, special event stations will be on air during the FT8DMC Activity Days from 1. to 31. July 2020. All stations will... Read more
K1JT , JOE TAYLOR HINTS AT POSSIBLE NEW MODE!
In a post to the WSJT-X email group today, Joe Taylor K1JT hinted at some ongoing experimentation of a new digital mode with sub-modes. His post was a... Read more
WWSA GACW Contest Rules.
WWSA GACW I – Dates Second weekend of June of every year. From Saturday 15.00 UTC until Sunday 15.00 UTC. 24 hours period. II – Goal To co... Read more