Guten Tag Stefan
Main amp is a single Decca 5501 module and has a smit trigeer so can take
sine or square wave. I use square wave input for Opera and QRSS because of the
divide down from 5 Mhz main VFO. The input to main amp needs around 7 – 10
volts. At present I use VFO 472 – 479 Khz /4001(SQUARER)/4017 DIVIDE BY
10/tc4426 driver to main 5501 amp input
73 de mal/g3kev
Sent: Friday, December 04, 2015 5:07 PM
Subject: Re: LF: WSPR OBSERVATIONS
Am
04.12.2015 17:53, schrieb mal hamilton:
[...]
When I get time I will QRO but need to build an intermediate RF amp
between TCVR and main MF amp
Which input
signal does your main MF amp need? Rectangular? Sine? Which input-Z? Which
amplitude?
73, Stefan
