All at G3WSC/P. Nice signal yesterday early evening. Very strong but you had key clicks on the LF side of the signal on 136 khz covering a total of 250 hz. I expect the switched mode class D amplifie
Dear Derek & Lech (I don't know if Lech has an E-mail address) Thanks for an interesting evening at Puckeridge - It was good to meet up with yourselves and Mike, and also to play around with a 'real
I wish Larry and the VE team all the best for their forthcoming transatlantic tests - the choice of a period in November is excellent, and if there is a chance then (and December) is the optimum tim
If you read the literature published by one of the researchers/experimenters of class D/E amplifiers, he states that if you push the amplifiers, which most amateurs do, and do not pay attention to t
Eh what?? I think you're getting confused with high levels of harmonic output, which class D amplifiers can suffer from if not properly filtered, and sideband energy from fast rise and fall times of
Eh what?? I think you're getting confused with high levels of harmonic output, which class D amplifiers can suffer from if not properly filtered, and sideband energy from fast rise and fall times of
I don't normally post here, but.... G3KEV wrote :- Why so intolerant? The Decca experimentors are radio amateurs, taking advantage of the unique availability of some ex-commercial equipment to push
<< Very few signals generated by such amplifiers and used by radio amateurs have a pure sine wave output after one 5 pole LPF, except at very low power levels, >> Hello. I think you will find that th
So, if both MM0ALM and G3WSC were running 1W ERP, this completely destroys the argument that higher antennas always work better for the same ERP! Mike. Speculation again. Do you know exactly the par
G3WSC key clicks this morning Saturday 15/0800utc on beacon mode. Spreading from 137.24 - 138.23 khz. It seems worse on slow cw beacon mode, both inband and outside the band. It needs to be cleaned u
Greetings: Not good news, summer static is quite high, we have thunderstorms south or south west of us it seems. DCF39 is not strong either. Back to prayer for a nice X class flare, quickly...... Hi
Hi David/g0mrf Did detect the TX change. Your tx was reasonably clean last night. When I heard G3YXM this morning the whole band was covered with key clicks. Offer him some advice to rid the tx of th
During maintenance periods at CFH it might be possible for Larry to use the tx for a short time for amateur radio purposes, the tx is already tuned within the band. It might also be possible for Geri
Hi Larry and Co Have just returned from Cookstown/N.I- IO64PO, after conducting some experiments both transmitting and receiving to access possibilities for November. The qth is ideal for receiving,
Hello, for those of you using GPS receivers to measure distances for example for field strehgth measurements (Gamal and I used a Garmin GPS45XL for our field strength profile of DCF39 and I used thi
If anyone that I have worked recently from GI requires a qsl card pse send your card via G3KEV direct and I will return one direct. I was only running qrp for testing purposes and the best dx was SM6
Hi All Since data modes are becomming the substitute for morse, why not replace the morse test with keyboard skills, say a typing test of 12 wpm. Most computer input data is entered via a keyboard. W
Hi All. The band has been very quiet this past week, think the qrn from rain static, very bad a times has scared everybody away. There is not the same activity that there used to be, some months ago
