[AMRadio] Screwiest Elmac problem ever

[JAMES HANLON]

While you're checking switches, make sure that the rotary switch in the rear is on the AM position.

Jim, W8KGI

________________________________
From: sparky52 at cox.net <sparky52 at cox.net>
Sent: Saturday, May 15, 2021 1:09 PM
To: w5jo at brightok.net <w5jo at brightok.net>; CL in NC <mjcal77 at yahoo.com>; amphone <amradio at mailman.qth.net>
Subject: Re: [AMRadio] Screwiest Elmac problem ever

hello

One more thing ,you might check the switch in the back that changes the type of mic ,from carbon to xtal may have been accidently thrown.

john ac7xh

> On May 15, 2021 at 8:30 AM w5jo at brightok.net mailto:w5jo at brightok.net wrote:
>
>
>     Hummmm! maybe a microphone, cord or connector for a start?
>
>     Jim
>     W5JO
>
>
>
>     -----Original Message-----
>
>
>     Maybe a couple of you follow the Elmac emails, but Gary, K3OS has had is
>     AF67 do something weird. He is a regular check in on the Old Friends group
>     that meets on 75 meter 3 times a week here in the Upstate SC area. It was
>     working just fine, then the mod fell off to a very low level. It does have
>     a new modulator interstage transformer from Hammond, which was installed
>     long prior to this problem, the rest original. He is getting 40 watts out
>     in CW and AM, the modulator has been checked end to end, including
>     terminating the output transformer with a 5K load where he read 300 volts P
>     to P across the secondary. When you hook it all back up, you get 10-20% mod
>     max. Voltages, components, all check good, she just won't modulate. Any
>     ideas?
>
>     Charlie, W4MEC in NC
>
>     ______________________________________________________________
>     Our Main Website: http://www.amfone.net
>     AMRadio mailing list
>     Archives: http://mailman.qth.net/pipermail/amradio/
>     List Rules (must read!): http://w5ami.net/amradiofaq.html
>     List Home: http://mailman.qth.net/mailman/listinfo/amradio
>     Post: AMRadio at mailman.qth.net mailto:AMRadio at mailman.qth.net
>     To unsubscribe, send an email to amradio-request at mailman.qth.net mailto:amradio-request at mailman.qth.net with
>     the word unsubscribe in the message body.
>
>     This list hosted by: http://www.qsl.net
>     Please help support this email list: http://www.qsl.net/donate.html
>     Message delivered to sparky52 at cox.net mailto:sparky52 at cox.net
>