[Heathkit] Heathkit AT-1 transmitter on AM phone.

Thu, 22 May 2003 21:55:34 -0400

Hello,
I have used an AT-1 transmitter on AM with plate modulation.
Click below for a picture of the set-up.
AT-1 modulator ==> http://www.hvinet.com/rjmattson/at1
This modulator was built from a construction article "Modulator for the
Novice Transmitter"  CQ Nov. 1955. The modulator described is specifically
designed for plate modulating the Heathkit AT-1 transmitter.
Another plate modulator for the AT-1 was described in Pop Electronics Aug.
1957 but I have not built that one.
I have recently used the AM modulated AT-1 on 3885 kHz with good reports.
Regards,
Bob Mattson...W2AMI
http://www.qrz.com/callsign/w2ami

----- Original Message -----
From: <[email protected]>
To: "kwylow zinjanthropus" <[email protected]>
Cc: <[email protected]>
Sent: Wednesday, May 21, 2003 7:27 PM
Subject: Re: [Heathkit] AT-1 on AM???

It has been done.  I recall talking to a ham who was using a modulated
AT-1 back in the 50s.  I don't recall whether he was using plate or
screen modulation.

I was using cathode modulation on a 6L6 final.

KoDCF/Tony

Quoting kwylow zinjanthropus <[email protected]>:

> Hello:
> Has anyone built or used a modulator (plate/screen/otherwise) for the
> AT-1? Been thinking about it and trying it out for bragging rights.
>
>
> Cal, N6KYR