Could you check the modulator voltages and get back to us? Tnx Greg WA7LYO Kinsston NC ----- Original Message ----- From: "Larry Szendrei" <[email protected]> To: "Discussion of AM Radio in the Amateur Service" <[email protected]> Sent: Friday, February 12, 2010 11:45 AM Subject: Re: [AMRadio] ht20
> Jack Schrader wrote: >> I hope you remember me, Jack with the ht20. >> >> Got the ht20 hooked up and have god output in cw but not am. I hooked up >> a >> 100w 210v test light to the antenna output on the ht20 but when I speak >> into >> the mic on am the light gets dimmer not brighter. Any idea about that? >> >> Tnx Jack >> >> > Possibilities: > > 1) audio out-of-phase > 2) insufficient drive to grid of final > 3) final not properly loaded > 4) insufficient capacitance in filter of HV supply to final/modulators > 5) improper impedance match in mod tranny > > If after checking the obvious and it still occurs, just put it on the > air. I have one rig that does this but still sounds quite acceptable. > You can look deeper into it later, but have some fun with it in the mean > time... > > Does the modulation envelope look OK on the scope? > > 73, > -Larry/NE1S > ______________________________________________________________ > Our Main Website: http://www.amfone.net > AMRadio mailing list > Searchable Archives: http://www.mail-archive.com/[email protected]/ > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Post: [email protected] > To unsubscribe, send an email to [email protected] 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 > ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/[email protected]/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: [email protected] To unsubscribe, send an email to [email protected] 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
