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1. LF: CFA (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Sun, 21 Mar 1999 10:27:33 +0000

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

/rsgb_lf_group-archives/html/rsgb_lf_group/1999-03/msg00128.html (9,151 bytes)

2. LF: LF Receive performance (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Fri, 16 Apr 1999 09:27:15 +0100

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

/rsgb_lf_group-archives/html/rsgb_lf_group/1999-04/msg00082.html (9,223 bytes)

3. LF: CFA (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Fri, 23 Apr 1999 19:06:30 +0100

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

/rsgb_lf_group-archives/html/rsgb_lf_group/1999-04/msg00104.html (8,370 bytes)

4. LF: "RF Design" magazine article (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Wed, 19 May 1999 16:46:36 +0100

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

/rsgb_lf_group-archives/html/rsgb_lf_group/1999-05/msg00048.html (8,455 bytes)

5. LF: Noise from phone lines (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Tue, 15 Jun 1999 08:50:22 +0100

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

/rsgb_lf_group-archives/html/rsgb_lf_group/1999-06/msg00083.html (10,092 bytes)

6. Re: LF: PA0SE Field Strength Meter (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Wed, 14 Jul 1999 18:52:35 +0100

....................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

/rsgb_lf_group-archives/html/rsgb_lf_group/1999-07/msg00067.html (8,475 bytes)

7. Re: LF: OH2LX comments on measuring field strength (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Thu, 22 Jul 1999 15:32:52 +0100

..............................................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

/rsgb_lf_group-archives/html/rsgb_lf_group/1999-07/msg00132.html (9,446 bytes)

8. LF: Finbars' 136.150 beacon (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Mon, 26 Jul 1999 09:33:40 +0100

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

/rsgb_lf_group-archives/html/rsgb_lf_group/1999-07/msg00162.html (7,915 bytes)

9. LF: EI0CF (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Tue, 27 Jul 1999 08:39:08 +0100

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

/rsgb_lf_group-archives/html/rsgb_lf_group/1999-07/msg00179.html (8,472 bytes)

10. LF: EI0CF (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Wed, 28 Jul 1999 20:30:22 +0100

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

/rsgb_lf_group-archives/html/rsgb_lf_group/1999-07/msg00204.html (8,361 bytes)

11. LF: EI0CF (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Fri, 30 Jul 1999 06:27:23 +0100

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

/rsgb_lf_group-archives/html/rsgb_lf_group/1999-07/msg00210.html (8,481 bytes)

12. LF: Mime-Version: 1.0 (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Wed, 27 Oct 1999 22:06:20 +0100

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

/rsgb_lf_group-archives/html/rsgb_lf_group/1999-10/msg00191.html (8,801 bytes)

13. LF: Reception (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Wed, 17 Nov 1999 10:59:14 +0000

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

/rsgb_lf_group-archives/html/rsgb_lf_group/1999-11/msg00126.html (9,134 bytes)

14. Re: LF: aurora propagation (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Wed, 17 Nov 1999 11:05:44 +0000

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

/rsgb_lf_group-archives/html/rsgb_lf_group/1999-11/msg00128.html (10,066 bytes)

15. LF: Loops (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Tue, 11 Jan 2000 15:41:33 +0000

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

/rsgb_lf_group-archives/html/rsgb_lf_group/2000-01/msg00112.html (7,952 bytes)

16. Re: LF: Re: Transatlantic (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Sun, 16 Jan 2000 21:37:38 +0000

.....................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

/rsgb_lf_group-archives/html/rsgb_lf_group/2000-01/msg00153.html (9,667 bytes)

17. LF: Transatlantic (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Tue, 25 Jan 2000 14:34:35 +0000

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

/rsgb_lf_group-archives/html/rsgb_lf_group/2000-01/msg00298.html (10,011 bytes)

18. LF: VLF (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Wed, 08 Mar 2000 10:35:12 +0000

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

/rsgb_lf_group-archives/html/rsgb_lf_group/2000-03/msg00093.html (9,251 bytes)

19. LF: Decca Tx (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Mon, 27 Mar 2000 16:27:46 +0100

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

/rsgb_lf_group-archives/html/rsgb_lf_group/2000-03/msg00258.html (8,655 bytes)

20. Re: LF: 73kHz - Rugby (score: 1)

Author: "Walter Blanchard" <blanch@pncl.co.uk>

Date: Fri, 31 Mar 2000 22:42:53 +0100

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

/rsgb_lf_group-archives/html/rsgb_lf_group/2000-03/msg00318.html (8,946 bytes)