[NLRS] K0HAC/N0UK moving sale - part I

[Chris Cox, N0UK]

The 222MHz amplifier & transverter pair are spoken for.

Next item is for a 144MHz conduction-cooled tetrode linear amplifier.  The 
RF deck is modified from a commercial Quintron high-band paging transmitter.
The amp emits around 400 watts with about 3 watts of drive and utilises 
G3SEK's top-of-the-line regulated screen supply and control boards.

The screen supply actively monitors both screen and control grid current 
and will disable the power immediately it detects any condition that could 
cause damage to the valve/tube.  DEMI used to sell the board-level kit 
without the screen transformer and case althoguh I no longer see them 
listed in their catalog.

Full documentation on this part of the system is available at 
http://www.ifwtech.co.uk/g3sek/boards/tetrode/tetrode-1.htm
and would be a great enhancement to any other existing amp based on any of 
the popular 4CX250/350/400 tetrodes or similar and can be used to control 
up to two tubes.

Before upgrading to the 1.5kW 2m amp, this was the mainstay of my 
two-metre station and was used to work ~120 grids and 46 states on 2.

I will also include an unfinished 50MHz amp deck I was building which 
could use the same power supply.

This amp is installed in a six-foot 19 inch rack cabinet which houses the 
RF deck, EHT PSU, and the screen supply.  abd leaves about 3 1/2 feet of 
usable rack space for your other kit.

Again, pickup in South Minneapolis (BTW - the rack will NOT fit in a 
MINI!).

$350

73  Chris Cox, N0UK  email: chrisc at chris.org or chrisc at BritishCarAndDriver.Com
Please join me in fighting Multiple Sclerosis.  I will be riding my
bicycle 150 miles from Duluth to Minneapolis in the 2013 MS150 ride.
http://main.nationalmssociety.org/site/TR/Bike/MNMBikeEvents?px=6901434&pg=personal&fr_id=19263

  http://www.ifwtech.co.uk