[ARC5] Restoring a BC-455-b, request advices

[Leslie Smith]

Glen Zook's advice is gold!  Even if the capacitors in your set don't
cause damage your set may not work properly until you replace them.  I
bought a good-looking R-24 receiver.  Using a +60V supply for the B+
line I used this set every evening over a period of about 6 months.  At
first it worked - then it began to squeal, and became unstable - due to
poor RF bypassing on the B+ supply line.
 
It's not simply leaky capacitors that cause poor performance.
 
Glen's advice is sound, and doubly so if you use voltages much above 75
volts (or so).
 
73 de Les Smith
vk2bcu at operamail.com
 
 
 
On Mon, May 2, 2016, at 01:05, Glen Zook via ARC5 wrote:
> Replace the capacitors!  It can make a BIG difference in the
> performance as well as protecting from damage caused by leaky /
> shorted capacitors.
>
>
>
>
> Glen, K9STH
>
> Website:  http://k9sth.net
>
> **From:** Paolo Gramigna <admin at controllo.it> **To:**
> arc5 at mailman.qth.net **Sent:** Sunday, May 1, 2016 3:09 AM
> **Subject:** [ARC5] Restoring a BC-455-b, request advices
>
> Hi all,
> I'm a newcomer here. I just acquired a complete (less dynamotor) and
> good-looking BC-455-B and I would like to restore it to good working
> conditions. I'm planning to use it in order to listen to the few
> remaining broadcasting stations, while enjoying the sound of a truly
> vintage radio.
>
> I have seen several posts in the web suggesting to replace the
> capacitors, especially the electrolytic ones, with modern ones. That
> will cause big detriment to the authenticity, but probably will be
> beneficial to the functionality.
>
> What is your wise advice?
>
> thanks!
>
> ________________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
 

-- 
http://www.fastmail.com - A no graphics, no pop-ups email service

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/arc5/attachments/20160502/5bbee5de/attachment.html>