[R-390] Calibration Osc and 2nd Osc questions and AGC issue

[thoyer]

Hi Dave, 

I tried that but was not very successful. There are about 10 small pieces
that don't want to go back in any sort of orderly fashion.......

Tom
 

-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net]
On Behalf Of David Wise
Sent: Tuesday, December 05, 2017 7:03 PM
To: R390 (E-mail)
Subject: Re: [R-390] Calibration Osc and 2nd Osc questions and AGC issue

You may not even need a new slug.  If you can glue the pieces back together,
the result will have almost the same permeability as before.

Dave Wise
SWL in Hillsboro, Oregon
________________________________________
From: r-390-bounces at mailman.qth.net <r-390-bounces at mailman.qth.net> on
behalf of thoyer <thoyer1 at verizon.net>
Sent: Tuesday, December 05, 2017 3:58 PM
To: 'Larry H'; bill.riches at verizon.net; r-390 at mailman.qth.net
Subject: Re: [R-390] Calibration Osc and 2nd Osc questions and AGC issue

Well, it looks like my AGC issues may be due to the broken core in Z503. The
coil is fine, just the iron slug is in several pieces....

Last night I connected -9v to the AGC NOR terminal and traced the voltage
through various circuits. All measured voltages seem reasonable.

Once I locate a new slug I should be back in business.

Tom
W3TA


______________________________________________________________
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