Hi Chris, Your method sounds interesting - I'd like to try it. Can you outline the calculations required, or point to a site or source that has the detail ? Regards, Martin -

Alan Regrettably Weds is the only day this week I can't make, tied up in a meeting in Southampton all day. For info there was all the visual signs of a super-refraction duct out in the Channel this

"Thoroughly disagree" Thanks for your reply Chris. I am not clear with which approach you thoroughly disagree with however. a) the gain method of measuring noise figure b) measuring without an input

Thoroughly disagree. I use the 3dB method, which requires a 50-ohm termination, a 3-dB attenuation pad, a noise source, and a means for measuring output noise power (typically a spectrum analyzer).

Hello All, The 432 MHz and Above EME Newsletter for July 2016 by K2UYH can be downloaded from: http://www.nitehawk.com/rasmit/em70cm.html -- Enjoy 73 Rein W6SZ

There are different approaches to measuring noise figure. I always use a y factor test and leave the noise source attached to the input of the amplifier/receiver. Powering on and off the noise source

Yep you've picked a week of good weather Wednesday is good for me, have to be somewhere in the morning but should be done by lunch so will head straight over to lane end 73 John

Hi there, Have arrived in the Roscoff area and am staying for a week in St Pol de.Leon just to the south...wx looks extremely warm tomorrow so thinking Wednesday around 13-1500local...local time here

John - That is a great achievement considering the high humidity. That means there was some form of communication on Sunday, on all bands 24GHz and above. Thats a first!! Roger G8CUB

Hi all I watched a Youtube video recently about measuring noise figure using the measured gain of an amplifier and a spectrum analyser. The thing that I found odd was that the video maker did not

Congrats on another mmWave first! Whilst we have often not favoured the 122GHz band due to the Oxgyen resonance losses (similar to the 60 GHz band) - all activity counts! - and like the exempt 60Ghz

To add a bit more to Sundays Millimetric activity reports. G8KQW was able to receive my 241020 MHz auto keyer signal at 5 by 3 by 3.9Km distance LOS across Winchester. This was one way reception. So

Tomorrow (Tuesday 19th) I'll be lending moral support to someone taking part in the 1.3GHz AC event. Operating from Crabwood Farm near Winchester IO91HB65 I'll take along my 10GHz PortaBeacon and

Hi Chris, Roger Another fantastic achievement! Well done. 73Barry, G8AGN On 18/07/2016 08:29, Chris G0FDZ chris@... [ukmicrowaves] wrote:

Back to DC matters at 10.368 GHz, i finally fitted my OZ5N auto pll and this is what happened. Well it really didn't want to lock up at all, i changed the 82 p at the crystal to 56p. I gave everything

Nice one Chris and Roger, just in time for September "GHz bands" If anyone else has news of note, I'm starting to write the column this week. 73 John

Hi Bill, The way most of us get to 134GHz. Is Elcom synthesiser on 11.2GHz, a Broadern module (X3 and Amp) giving 33.6GHz into the mixer. With the same for LO, 11.23666 x3 to 33.71 (134.84), giving

Alan. I did a 'last time' buy of these diodes last year of 100. However these have all now been distributed, leaving me with less than intended. So unless anyone has bought some, and are not going to

Well done guys! Yes, yesterday was plagued by gas losses. With RH at very close to 100% here, even a test from home to Clee Hill on 24GHz failed ... Keep up the good work! 73 Chris GW4DGU --

The first UK QSO on the 122 GHz band took place yesterday the 17th of July at 13:45 hours UTC between Roger G8CUB/P and Chris G0FDZ/P with both stations located at Hackpen,