[VHFcontesting] Excess six meter amplifier for sale

[Dave Olean]

I am looking to sell my 4CX1000A six meter KW amplifier. It is homebrew, but looks really nice and is built inside an HP equipment case. The design is grid driven and takes about 15 watts to drive it to full output. I swamped the grid circuit with a 50 ohm resistor to cut down the gain. It would make full output with maybe 5 or 6 watts initially.  The design uses a stretchable plate coil as per the ARRL handbook.  The loading cap is a vacuum variable. The screen voltage is developed inside the amp and the unit has the G3SEK tetrode boards installed for a clean sounding amplifier.  The RF compartment is internally shielded  and decoupled with a built in 5 pole harmonic filter inside the shielded internal housing. The amp has a quiet blower and waveguide beyond cutoff honeycomb air exhaust ports on top.  This is a nice desktop amplifier with plate and screen/grid metering using modern rectangular metering.  All you have to do is supply 3 KV high voltage.  Plug’n’play.  I have a spare tube for it included.
Asking $650. This was a spare amplifier that I used occasionally while in my workshop.
I put a few photos online in case you want to take a look.  Check out      http://www.directivesystems.com/6METERAMP.htm
You can contact me by email or call 207 658 7758 days or 207 658 9076 evenings.
Thanks

Dave K1WHS