Many years ago I had one of these antennas that I used with a Gertsch
RLF-1 WWVB receiver. When the Nuvistors became old and feeble I
decided to change the 6CW4 Nuvistors to FETs. Being young and
foolish and thinking this is basically audio, I went to Radio Shack
and got some N-Channel FETs and stuffed the FET's leads into the
appropriate Nuvistor socket pins: Gate to Grid, Source to Cathode,
and Drain to Plate. As I recall, I had to add a wee bit of
capacitance to make it tune back down to 60 KC - back then I didn't
know from kHz. I made a voltage divider inside the antenna's
junction box to get the higher voltage down to what the FETs
wanted. It ran fine for the remaining 8 to10 years that I used the
RLF-1's. I forget where the antenna went, but it may still be in use
somewhere. At least I hope so.
Burt, K6OQK
From: Merchison Burke <merchi...@yahoo.co.uk>
To: time-nuts@febo.com
Subject: [time-nuts] HP 117/10509a
Hello,
Has anyone successfully replaces the Nuvistors in the 117 and the 10509a
with FETs. I would like to replace them with inexpensive FETs instead of
buying the expensive Nunistors.
Thanks for all help,
Merchison
Burt I. Weiner Associates
Broadcast Technical Services
Glendale, California U.S.A.
b...@att.net
www.biwa.cc
K6OQK
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
