Heathkit DX-60 AM Net
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DX-60 PTT Mod Pt. 2

Including Monologue Switch
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DX-60 PTT Modification

Another great one from Terry, N6TLU
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February 2019 DX-60 Check-ins

N6TLU, Terry, features our net once again on his YouTube D-Lab Electronics channel.

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Heathkit DX-60 AM Net Gallery Images

Gallery: HB1939 Transmitter (Steve, W8TOW)

Here is a collection of photos of my HB1939 transmitter.  I built this with the assistance of Mike N8ECR, Brian W8KHZ and many others.

This transmitter design is from a 1939 "Radio" Handbook, and consists of a pair of Taylor T-200's in PP modulated by a pair of 203Z's.  I did the machine work and the building, starting in 2002 and finishing in 2003..

Originally, I used a Collins 32V3 (as a Class C exciter and the 32V3 modulator as the speech amp).  In 2010, after we moved, I sold the 32V3.  After a couple of attempts, I eventually gave up trying to find the best new exciter to drive it.

Finally, in 2014, Orville, WB8TOT gave me a birthday present. My 1st AM  transmitter: a Johnson Viking I.  I have modified the speech amp and added necessary circuits to drive the HB1939 "Big Rig".  It is back on line and hope to run the DX-60 net with it.

(Submitted by Steve, W8TOW, January 2019)

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HB1939 Transmitter-W8TOW

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Posted: 01/28/2019 (stonebs)
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HB1939 Transmitter-W8TOW

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Posted: 01/28/2019 (stonebs)
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HB1939 Transmitter-W8TOW

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Posted: 01/28/2019 (stonebs)
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HB1939 Transmitter-W8TOW

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Posted: 01/28/2019 (stonebs)
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HB1939 Transmitter-W8TOW

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Posted: 01/28/2019 (stonebs)
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HB1939 Transmitter-W8TOW

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Posted: 01/28/2019 (stonebs)
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HB1939 Transmitter-W8TOW

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Posted: 01/28/2019 (stonebs)