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" <[email protected]>
> 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.
>
--- Begin Message ---
|
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.
|
--- End Message ---
|
