Re: LF: RE: Droitwich again

["Graham" <g8fzk@g8fzk.fsnet.co.uk>]

I still  have  my  edge  triggered   100Kz  > 10 Kz   frequency   standard  as required  by  my  licence  of  1972 .. some times it  was  9Kz  some time  11Khz just  had to  count  very  slowly  in-between  the bigger  100k blips  , once it  had  been  zero  beat  against  200k..

 

G.

From: Rik Strobbe

Sent: Wednesday, November 09, 2011 11:17 AM

To: rsgb_lf_group@blacksheep.org

Subject: LF: RE: Droitwich again

and more : http://www.radiomuseum.org/forumdata/upload/Frequ_Eich_Geber.pdf

 

73, Rik  ON7YD - OR7T

 

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Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens Rik Strobbe [Rik.Strobbe@fys.kuleuven.be]
Verzonden: woensdag 9 november 2011 12:13
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: LF: RE: Droitwich again

for those interested : http://www.radiomuseum.org/r/darc_darc_standardgeraet_nr_2.html

 

73, Rik  ON7YD - OR7T

 

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Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens Walter Staubach [wum.staubach@t-online.de]
Verzonden: woensdag 9 november 2011 12:07
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: LF: Droitwich again

Dr All,

    pse excuse that yesterday evening I sent a mail without signature. It was not yet ready but suddenly off and sent. Computers sometimes seem to have their own meaning.

Droitwich 200kHz was used by many hams as a frequency standard at that times. In DL-QTC 11/1954 page 474 one can find the "DARC-Standard-Gerät Nr.2" named "Frequenz-Eichpunkt-Geber."

    Two tubes 6K7 (VT86) and 6SN7, 100kHz multivibrator, wire antenna was necessary.

And it was built into an aluminum bread box with power supply.

A small part of the Droitwich history.

73   Walter    DJ2LF / DI2AG