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From: k2ors@comcast.net (Warren K2ORS/WD2XGJ)
To: rsgb_lf_group@blacksheep.org, <rsgb_lf_group@blacksheep.org>
Cc: "Walter Blanchard" <blanch@pncl.co.uk>
Date: Sun, 19 Mar 2006 18:41:05 +0000
Message-Id: <031920061841.4402.441DA5C1000837F90000113222064246130B97010D0A020E06979D0E03@comcast.net>
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Subject: Re: LF: Low power Tx
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Hi Walter,
    That's excellent news. Is the P.A. linear or a switching design? Do you know where I might get one?

Thanks & Vy 73 Warren K2ORS/WD2XGJ
FN42hi
http://www.w4dex.com/wd2xgj.htm

 -------------- Original message ----------------------
From: "Walter Blanchard" <blanch@pncl.co.uk>
> I found a Decca Aerial Testing Signal Generator Type 1615 at a junk sale a few 
> months ago. It's basically a xtal osc/driver/PA transmitter for LF (Decca freqs 
> 70-127 kHz). Very easily converted for 136 because the o/p transformer is 
> wide-band enough to cover 136 and needs no modifications. Plug about 100 mW 136 
> kHz RF into a xtal socket and it will give out 20-25w RF into 72 ohms (PA is 
> 2x807's). My old Marconi 2019 SG was quite adequate as signal source. Quite a 
> lot were made so there may be a few more appearing round the junk sales and if 
> you see one it's well worth �5 of anyone's money!
> 
> Walter G3JKV.
> 


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From:    "Walter Blanchard" <blanch@pncl.co.uk>
To:    <rsgb_lf_group@blacksheep.org>
Subject:    LF: Low power Tx
Date:    Sun, 19 Mar 2006 18:12:54 +0000
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<DIV><FONT face=3DTahoma size=3D2>I found a Decca Aerial Testing Signal =
Generator=20
Type 1615 at a junk sale a few months ago. It's&nbsp;basically =
a&nbsp;xtal=20
osc/driver/PA transmitter for LF (Decca freqs 70-127 kHz).&nbsp;Very =
easily=20
converted for 136 because the o/p transformer is wide-band enough to =
cover 136=20
and needs no modifications.&nbsp;Plug&nbsp;about 100 mW 136 kHz RF into =
a xtal=20
socket&nbsp;and it will give out&nbsp;20-25w RF&nbsp;into 72 ohms (PA is =

2x807's). My old Marconi 2019 SG was quite adequate as signal source. =
Quite a=20
lot were made so there may be a few more appearing round the junk sales =
and=20
i</FONT><FONT face=3DTahoma size=3D2>f you see one&nbsp;it's well worth =
=A35 of=20
anyone's money!</FONT></DIV>
<DIV><FONT face=3DTahoma size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DTahoma size=3D2>Walter G3JKV.</FONT></DIV>
<DIV><FONT face=3DTahoma size=3D2></FONT>&nbsp;</DIV></BODY></HTML>

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