Re: LF: [500 khz] M0JXM & G3XIZ

[Chris Osborn <g3xiz@yahoo.co.uk>]

Thanks for those very interesting measurements Dave.

I was running 50 watts of RF to a 40m inverted 'L' at 10m.
I've measure my field strength as being 640 mW ERP . .
Hopefully these parameters all tie up . .
if not then it's back to the drawing board.

73
Chris G3XIZ
IO92UB

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From: Dave G3WCB <ganymede444@btopenworld.com>
To: rsgb_lf_group@blacksheep.org
Sent: Sun, 22 November, 2009 12:10:45
Subject: LF: [500 khz] M0JXM & G3XIZ

Hi, Dennis and Chris.

 

I checked your relative signal strengths during your QSO on 500 kHz this morning, using the Wandel & Golterman SPM-30. M0JXM was averaging -74 dBm, and G3XIZ was averaging -62 dBm, i.e. 12 dB stronger. If you know how much RF power you were each using, you can deduce your relative antenna efficiencies.

 

Hope this is useful.

 

73, Dave G3WCB IO91RM

-----Original Message-----
From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org]On Behalf Of Dave G3WCB
Sent: 21 November 2009 11:38
To: rsgb_lf_group@blacksheep.org
Subject: LF: [500 khz] M0JXM...

Hi, Dennis.

 

Your signals are RST 579 here this morning. I can also hear G3DXZ at 349/QSB, but he's sending too fast for reliable copy at this end.

 

My antenna is a 20m long double wire "tee" at 5m, and the RX is a W&G SPM-30 with a tuned J310 pre-amp. 73, Dave G3WCB IO91RM, nr Windsor, s.e. England

-----Original Message-----
From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org]On Behalf Of DENNIS EASTERLING
Sent: 18 November 2009 17:16
To: rsgb_lf_group@blacksheep.org
Subject: LF: Lost QSO

Hello Mal

 

Sorry if I left you in the lurch  16.5 today, after giving you a report 599 something happened and a single frequency signal came up on top of you and slowly drifted down frequency, perhaps someone tuning?

 

Better luck next time.

 

73 Dennis M0JXM