[R-390] Anyone have a spare ballast tube?

[Bob Young]

You can pick them up usually for about 30 bucks on eBay. I own several r-390A's and 390's and have never had one go on me in 15 years.
73,
Bob KB1OKL
________________________________
From: r-390-bounces at mailman.qth.net <r-390-bounces at mailman.qth.net> on behalf of Jacques Fortin <jacques.f at videotron.ca>
Sent: Saturday, November 28, 2020 12:09 PM
To: KB1OKL <bobyoung53 at hotmail.com>
Cc: 'Larry H' <larry41gm at gmail.com>; Collins R-390 HF Receiver List <r-390 at mailman.qth.net>
Subject: Re: [R-390] Anyone have a spare ballast tube?

Hi Paul,

Fair Radio still have NOS 3TF7 ballast tubes in stock.
Or if you can find a 2HTF11B, it will be good also (this is the original
type used in the R-390s).
If the price asked is too much, just strap pins 2 and 4, then pins 5 and 7
of the 3TF7 socket and use either a 12BY7 or a 12BH7 in there.
No need to be a "good" tube, as far as the filaments are still good...

73, Jacques, VE2JFE

______________________________________________________________
R-390 mailing list
Home: http://mailman.qth.net/mailman/listinfo/r-390
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:R-390 at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html