PLEASE, PLEASE don't start the CFA hare running again!!!! I wasted a lot of time in the '80's trying to convince Hately that his theory was misconceived. In the end I (and many others) decided it was
Entirely agree with Dave's remarks re S meters etc.I'd written an almost exactly similar email but hadn't got around to sending it. Amazingly, in spite of the facts, DCB39 (or whatever it is) is the
For those who were wondering about how the CFA works, the following appeared in GM3HAT's ad for CFA's in "Radcom" this month (May 1999) Quote: " A conventional antenna in resonance surrounds itself w
The April 1999 issue of the US "RF Design" magazine has an article "Understanding range limitations for low-frequency unlicensed transmissions" about FCC "Part 15" transmitters for local data links t
BT also have a wonderful little pair of boxes which duplexes two BT lines onto one physical pair of cables. If someone near you has had one fitted depending on the technology used this could increas
....................possibly for an Alderney trip where there is a 15kg air luggage limit. If you get to Alderney I would be very interested to know how bad the Loran QRM was. Thanks. Walter G3JKV
..............................................Vaino mentioned DGPS. This stands for Differential GPS. I have heard that the corrections to be applied to the GPS data in order to become a more accura
Hello Finbar. Have only just got back home after weekend away but saw your email re beacon so tuned in and there it is clearly audible in a 250 Hz bandwidth well above Loran QRM and no need for Spect
Hello again Finbar, Results of first H24 monitoring : EI0CF always there; bit of fading around dawn today; otherwise quite steady. Main problem yesterday was QRN in the late afternoon/evening which a
This evening (Weds 28th) perfectly clear here (IO91UF) behind the QRN - continuous sending at 5 wpm or so - no gaps. Monday evening the QRN was pretty bad, but not so bad this evening - quite a few s
Insomniac results for Friday 30th : 0445 Z : Audible but buried under QRN 0500 : QRN decreasing rapidly just as sun came up 0510 : Clearly audible and fairly easy copy. Don't think signal strength ca
The frequency is getting away a bit from 136 but twice in the last week, around 0400-0600Z, I decoded the Cape Race, NFLD, differential GPS transmitter on 315 kHz (3802 kms). I leave the DGPS receive
Couple of points re recent emails: E-field probes: If you have or make an e-field probe antenna you will find that sticking it on top of a high mast makes an enormous difference to the signal strengt
kHz before 136 kHz cross-modulation/inter-modulation consider the G3XDV wrote: Yes, this has been clearly audible at various times this week, mainly between 137.5 and DCF39. It was apparent last wint
If you're building a loop don't forget that a lot off turns side-by-side constitutes electrically another loop at right angles to the main one, much smaller perhaps but quite enough to knock the notc
.....................There is a VE station building for the band and he intends to try some tests next "fall" from VO1. That should do it! Yes - if he can hear anything behind the 750 kW Loran transm
Might I suggest that North American listeners would get a better indication of conditions if they would listen for the Datatrak transmitters on 133-134 kHz? They only radiate 10 watts from 100 ft ver
Flg might be of interest to the SM boys thinking of going on 8 kHz. I found it in the memoirs of Dr Jack Pierce (MIT, USA) who had a hand in the design of Omega and Loran-C : "On the occasion I found
The UK Decca Navigator transmitters shut down for public use this weekend. Most sites have already been sold for other purposes but a few will remain in working order for a few months. I might be abl
Mike, At 17:47 31/03/00 +0100, you wrote: ..................................................................... The band gets even quieter tonight when the Decca transmissions at the bottom end go QR
