My Ham Shack - Your Shack. Pictures. Blogs. Projects.

John Young
Extra Class
W3CPO Ham Since 2011
United States

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My Ham Radio Interests
Old boatanchor equipment. I like SSB DX on 20 & 40M. I've been seriously involved in radio & electronics since 1959 (my first issue of Popular Electronics is dated December, 1959). I was too pompous to take the Novice test in the comfort of my electronics teacher's home, so I went for the General Class back in 1967 when the code test was tough. I got dusted and put HAM radio on hold for 45 years. I was testing and aligning my old AM stuff for sale on eBay when I got interested again. The whole story is on my QRZ and Flickr pages.

- Swan HF-700 CX SSB Special (dual 8950 outputs, 450W PEP)
- Swan HF-700CX "regular" (dual 6LB6 outputs, 400-450W PEP)
- Swan HF-700S SSB Special (dual 6MJ6 outputs, 300W PEP)
- Yaesu FT-101E (100W output)
- Kenwood TS-930S (120W PEP, my baby)
- Kenwood TS-830S (120W PEP, very fun rig to use
- Kenwood TS-130S (vacation & beach rig)
- Atlas 210X (everyday portable rig)
- Hammarlund HQ-170C (works great, so does clock)
- Scopes, Meters, LCR's and too much other stuff to list.

Other Interests
Mountainbiking, fishing, photography, etc.


Convert Henry Tempo-One power supply (AC-One) to work with Swan rigs.

from W3CPO

Project Overview

The AC-One has a beefy power transformer, and it has more than enough amperage to power a 400-500 watt rig like the Swan 700CX series. The AC-One is MUCH less expensive than the Swan 117XC, and it has a tap on the transformer to provide the 800-volts needed for the finals in the Swan. The only thing is finding a cable with an adequate voltage rating (which I have) and adding a "black box"in the cable to provide 12VDC for the relay switching in the Swan. I just started this project.

Materials and Tools
  • - Tempo-One (Yaesu) AC-One power supply.
  • - 11-pin male Amphenol plug for the AC-One end
  • - Cinch-Jones connector (female) for the Swan end
  • - 8 to 11-conductor cable
  • - small full or half-wave + electrolytic power supply for the relays in the Swan

  • Go to: Overview