[Heathkit] HW-101 S-Meter Zero

[hwhall at compuserve.com]

If that S-meter is derived from an AGC line, look for gassy tubes in the AGC circuits. Had that happen to me once.

WayneWB4OGM
-----Original Message-----
From: k2cby <k2cby at optonline.net>
To: heathkit <heathkit at mailman.qth.net>
Sent: Fri, May 24, 2019 3:05 pm
Subject: [Heathkit] HW-101 S-Meter Zero

The only way I can get the S-Meter to zero on my HW-101 with RF Gain max
(per the set-up section of the manual) is with the "METER" pot cranked all
the way to ground.

Voltage readings on the 6AU6 IF amplifier (V3) and the diode sections of the
6BN8 (V13) are more or less normal.

Is this unusual?

The two 47 Ohm resistors in the cathode line of the 6AU6 (V3) seem unusually
small. I would expect about 470 Ohms, total.

/Miles, K2CBY

 

Miles B. Anderson, K2CBY
16 Round Pond Lane
Sag Harbor, New York 11963-3821
Phone: (631) 725-4400
FAX: (631) 725-2223

e-mail: k2cby at optimum.net

 

______________________________________________________________
Heathkit mailing list
Home: http://mailman.qth.net/mailman/listinfo/heathkit
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Heathkit at mailman.qth.net

List Administrator: Gary Harmon, K5JWK
** For Assistance: gharmon at idworld.net **


This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to hwhall at compuserve.com