[ARC5] BC-221 frequency meter

[Fuqua, Bill L]

  It is extremely unlikely you could have damaged the crystal.
Make sure you check all the carbon composition resistors. They change values over
time. After 70 or more years I suspect that most are off, especially the larger value ones.
I have seen large value carbon comp resistors become off by over 50% only after 10 or so years on the shelf. 
Also, the rfc in the crystal oscillator and the tube could be suspect. 
 If I recall the crystals are hermetically sealed. 
73
Bill wa4lav

________________________________________
From: arc5-bounces at mailman.qth.net [arc5-bounces at mailman.qth.net] on behalf of KG4KGL [kg4kgl at gmail.com]
Sent: Wednesday, January 01, 2014 7:11 PM
To: arc5 at mailman.qth.net
Subject: [ARC5] BC-221 frequency meter

Alright before I start, you have to promise not to laugh at me.

I bought this freq. meter and when I powered it up with my Heath PS-4, I read the wrong scale on the meter and applied ~300v B+. Oops. So I saw a little smoke and thought I fried one of the old fixed caps, so I recapped it.

Now it worked at that high voltage and it works after the recap, but I get nothing out of it when I put it in the Crystal position. Am I right in assuming I have fried the crystal? Everything else works fine.

Does anyone have a spare xtal they would be willing to sell?

Tnx,

Robert
KG4KGL
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