New Range of Antenna's

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New Range of Antenna's

Postby DARREN4963 » Tue Jan 03, 2017 9:47 am

I have been a licensed Ham and radio enthusiast for over 20 years and recently renewed my love of scanning. I mainly listen to Civil Air band. I purchased a new bearcat ubc125xlt and although impressed with the radio I wasn't very impressed with the antenna. So having a little knowledge I decided to build my own home brew fixed antenna for outside and I ordered a Watson W881 for the set top.

The home brew worked excellent but I have to say I was very disappointed with the Watson W881. So having done a bit of research I decided to have a go at making my own having realised the resonant frequency of the W881 was in fact around 175mhz when my interest actually lay in the Civil airband of 118 to 136mhz. I worked out that an more efficient set top antenna for the air band needed to be around 22 inch's as opposed to the 16.5 inch's of the Watson. I made the antenna and centred it around 127 mhz to put it in the middle of the band. And guess what it worked great.

I have since made many more antenna's for other listeners and now advertise them on Ebay. They are very very good quality and work better than antenna's available from commercial companies who charge 3 or 4 times more.

So if your in the market for an antenna that will improve your listening have a look on face book under Broadsword antenna's or on ebay for the same

Happy listening
DARREN4963
 
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Re: New Range of Antenna's

Postby m0lsx » Tue Jan 03, 2017 12:16 pm

Darren, if your knowledge of antennas is anything like some of the other antenna specialists that I know, then it is very deep & defiantly more than welcome here.
For example G3TXQ is an amazing source of antenna information on various forums. As is his website.
Nigel M0CVO use to live close to me here in Norwich & he knows his antenna theory & practical stuff too. As do a couple of other amateur radio friends who specialise in antennas for the commercial sector.
I have one acquaintance who was talking about Medium Wave broadcast antennas & the limitations & compromises needed recently & I could have listened all day. "I needed x band width for audio, but at that length I got a SWR of....... & an rr of......However upping the SWR by reducing that length by.....So that X was a Y% & the rr was at......Gave me this ERP, where if I did this I got a good SWR,but no bandwidth for the audio & I would only get this much ERP.
Buy a database from Kimmy JS19 via http://ukscanningdirectory.co.uk/
Or do Google search of this forum via https://www.google.com/cse/home?cx=partner-pub-6291336405621919:2662881632
73 De Alan (M0LSX.)
http://www.qrz.com/db/M0LSX"
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Re: New Range of Antenna's

Postby DARREN4963 » Tue Jan 03, 2017 2:02 pm

My knowledge is gained from having been a comms tech in the Royal Navy and lots of experimenting etc. I am happy to help in anyway I can
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Joined: Sun Dec 11, 2016 5:18 pm


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