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Martin, I was thinking of asking about using 75ohm sat cable when I saw your preference for this. I have read elsewhere that such coax can be used in lieu of standard 50hm. How would you use it for rx

Chris The coax into plastic box injector sounds like a very early Wellbrook design that was used with a Wall Wart, later? injectors are in a die-cast box without potting compound, they have

Another good series of articles on EMC testing and best design practice can be found here. https://www.emcstandards.co.uk/diy-emc-testing-series-2001

Hi Simon, Slight correction Steve's callsign was G3TXQ http://karinya.net/g3txq/chokes/ Some supporting maths if you enjoy that :-) http://karinya.net/g3txq/baluns/baluns.pdf Highly recommended

Hi Andrew, My experience of standard coax cables such as RG58 seems to have been different to yours. Although theoretically it is supposed to have 95% braid coverage, it often does not, and in some

Hi Martin..your pics did show..if you mean pic of cm chokes with house and end feed.

Hi Jeff.. Yes useful info, what he did not show is to maybe add chokes to the power to bias T and sdr, even one between sdr and bias t. Not always needed of course, but even a tiny bit improvement is

I was fooled because I can see the images I attached in the web version of the group in my browser. I've now added them to a new folder in the photos section. Regards, Martin

Martin <martin_ehrenfried@...> added the album Antenna Noise reduction: Methods of reducing noise on receive

Hi Andrew..re rg58.. what i was meaning is ( which) i should have said, dont buy from ebay unless you seen it..very easy to end up with crap.. Simon

Hi Jari What i mean by that is often, very often general rg58 coax is poor quality. The screen on cable is very poor, allowing interference to get into cable. Simon.

Jeff, For receiving applications, I doubt that most users could tell any difference. What I can say is: There is nothing wrong with RG58c. It has 95% coverage of the screen. Going to a 100% screen

Graig There are two Wellbrook loops that use an 8/9dB push-pull Norton amplifier inside the Antenna Interface. These are the ALA1530S+ which is out of production and the ALA1530LNPro Imperium that is

After some strange results with the Wellbrook loop comparison with an LZ1AQ loop, I finally found that my Wellbrook interface was in fact a 12db line amplifier. Cheers. Craig.

Hi Simon, For non-native (British) English speaker your sentence is pretty difficult to understand, please clarify: "Good luck with the rg58…unfortunately quite often cb or taxi spec..ie 68% or so

The list does not allow attachments. So you must post a link, or upload to the Photos section. Or files, for non-photos. -- Steve Greenfield AE7HD

Hi Dx Petro.. Thats what this thread all is about..WORKING answers to living in an urban/ noisey area..Some, know all the answers, many do not.. I am intending with help from others ( please, as i

Good luck with the rg58…unfortunately quite often cb or taxi spec..ie 68% or so screening..ie pooh for dedicated rx antennas. Simon

Hello all. Images seem not to be loading on my end. Is it just me? My questions is actually for those with space contains. Living in an apartment area, how can one mitigate and or DIY an antenna that

Hello Martin, Thursday, December 30, 2021 Thanks, maybe Wellbrook had more than one design of injector box, I can't compare the better one with the other as it's potted. I have now got the loop up in