Re: LF: Decca SG

[k2ors@comcast.net (Warren K2ORS/WD2XGJ)]

Hi Walter,

  Thanks for the info. Interesting circuit line up. My guess is that its a 
class-C P.A. 

> It's a very old tube-type device designed ca. 1960.
> Tube line-up 6AM5, 12AX7, two 807's (later models 6146's)

   The 807 predates the 6146 by about 20 years, so in fact it's a much earlier 
model than the 6146.


--
73 Warren K2ORS/WD2XGJ
FN42hi
http://www.w4dex.com/wd2xgj.htm

 -------------- Original message ----------------------
From: "Walter Blanchard" <blanch@pncl.co.uk>
> Re Decca 1615 SG
> 
> It's a very old tube-type device designed ca. 1960.
> Tube line-up 6AM5, 12AX7, two 807's (later models 6146's)
> No risk of blowing up FET's with this one but doubt 
> if the transformer design would be relevant to FET's.
> No ccts but the guy who designed it tells me it was 
> purposely designed to work into all sorts of mismatchs, 
> shorts, etc so it could be used for lining up new antennas
> of possibly unknown characteristics. It worked so well
> they never bothered updating it to solid-state and it 
> was still current in 1995.
> It's what I'm using to put out the test signal for Peter
> G3PLX.
> 
> Walter G3JKV.
> 
>

--- Begin Message ---

To:	<rsgb_lf_group@blacksheep.org>
Subject:	LF: Decca SG
From:	"Walter Blanchard" <blanch@pncl.co.uk>
Date:	Mon, 20 Mar 2006 07:43:46 +0000

Re Decca 1615 SG

 

It's a very old tube-type device designed ca. 1960.

Tube line-up 6AM5, 12AX7, two 807's (later models 6146's)

No risk of blowing up FET's with this one but doubt

if the transformer design would be relevant to FET's.

No ccts but the guy who designed it tells me it was

purposely designed to work into all sorts of mismatchs,

shorts, etc so it could be used for lining up new antennas

of possibly unknown characteristics. It worked so well

they never bothered updating it to solid-state and it

was still current in 1995.

It's what I'm using to put out the test signal for Peter

G3PLX.

 

Walter G3JKV.

 

  

--- End Message ---