I thought about doing that but I did not want to spend a lot of time
experimenting fruitlessly.
Thanks for the encouragement.
Merchison
On 2012-07-05 11:19 AM, Burt I. Weiner wrote:
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
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