A noise cancelling unit plus a noise antenna may help alot..( feed against the rx loop) I found it essential for my use in London. Simon g0zen

Regards the electric tape..no Self amalgamating tape is what you WANT..

Hi John The crossed parallel loop has same properties as a small loop in regards to null..

That should do the trick!! Simon

Hi Juan Nothing new in the designs. The 3 circular parallel loops are each 1m dia ( i used 1/2inch copper air con pipe) separated by about 15cm. Supports were pvc plastic pipe from local diy store ( a

Hi Thats abit like how long is a bit of string question. THERE IS NO perfect antenna..There definitely is no perfect antenna from dc to light..or lets say 100khz to 200mhz.. Any antenna that does cove

Surly military uhf is data encrypted/ encoded audio by now!!!??? Even 446mhz can be/ is!! Simon g0zen

For a cheap clean psu..if you can find? an old school cb power supply works well..( circa £15 in uk on ebay.) It will be about size of half a shoe box if old school..if old school it is a linear power

60cm is rather small for even mw, especially lw and below.. Fine for hf.. Rig up a 1m diameter loop ( lash it up) and see if any better..one would expect it to be.. To check if voltage is at end of ca

Hi I feel last message was unhelpful, also not really correct, atleast in the fact we talking small mag loop rx antennas and not dipoles. Yes a thicker wire/ better still tubing for the loop WILL make

Hi It works like this..will try to explain Mount vertical. Just like a bike wheel is.. Forget horizontal for now..( that typically needs HEIGHT to work..vertical will be fine with bottom of loop 1m ab

Hi If loop is at optimum size for mw, which if 3m circumference its not far off. making smaller will not help with its ability to rx on mw. Lets assume the preamp is not being overloaded but your sdr

Hi Paul That question is abot like how long is abit of string. What loop, what preamp, why you want “less gain”, what frequencies you interested in, what loop do you have? 2m circumference or diameter

Chris See my point..big market there!! USA ETC. Martin makes the point..serious dx ers especially low banders need rx antennas..more than one. So Martin buys a £3k radio rather than a £1.3k radio as i

Forgot to mention With the phaser ( noise cancelling unit) it could be used to electrically steer 2 loops 360.. etc assuming the phaser is decent and fairly linear, but knowing you I expect it is.. So

Chris Re rx external switching Ones i have made in past.. Included 3 rx in..( never can have enough) switch on front off/ straight though. Rx a, rx b, etc..if you make a unit with judt one rx in, bet

Yes that would sell well I expect, but would need external power..even the ftdx 10 has only one antenna port..a reason why i love my ftdx3000..3 antenna ports and a suberb rx.

Hi Chris Thanks for replying Do you have any recommendations for how many extra windings on type 61 or is that for me to experiment with? The fcp isolation transformer..it uses type 2..similar in prin

Also David Have you suggested to your friend about “ noise cancelling unit” Ie an antenna phaser, trx/ rx antennas against a “ noise” antenna? Chris.when you starting to make one?? You sell antenna am

Hi Dave Chris is spot on! Explain to him the whole point of rx antennas is to get better s/n.. if that means no signal is above s3 so be it..just lie on signal reports.. At the end of the day if the l