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BEACONS 432.320 50 watts to a pair of big wheels at 70 feet. 1296.274 10 watts split between two loop yagis. one pointed at Mn other at Mo. at 40 feet.. These operate morning and evening on 100% solar/wind power. As battery capacity increases I will run them longer.


First licensed in 1955 as WN9OJI soon to become W9OJI and on to the extra class in 1959 because I was a cocky kid and wanted to impress all my friends. After failing the CW test the first time I HAD to get the extra then. Hi

Interest began in VHF and above in 1957 when I received a Gonset Communicator, 2 meters, for high school graduation and it was never the same again

I build just about all my own gear from antennas , high power amplifiers and anything else I need.

I have been and am an avid builder and experimentor. Current activity is 432 EME and tropo, 1296 EME with a 4.9 meter dish and a VE4MA feed.

The final amplifier on 1296 is a TH-327 tetrode which easily delivers 1500 watts to the VE4MA feed.

10 Ghz is also interesting and I do work rain scatter and tropo on that band where I have a 30 inch dish and 16 watts at the feed.

This summer I will do away with the 10 Ghz tropo system and put it on my 4.9 meter dish for EME.

N4PZ Products produces legal limit + amplifiers for 144 and 432 Mhz using a GS35b on 144 and a GS23b on 432.NOTE, I have just begun building 432 legal limit amplifiers using a russian triode GS35b.

It eliminates the complication of a screen supply and works extremely well.

I am very pleased with the performance, stability and power gain of the GS35b on 432. 1500 watts output is easily obtained with 100 watts of drive.

So far I have built about 22 144 Mhz amps and 57 432 amps.

Both will easily deliver 2 KW into a dummy load.

The Russian tubes are cheap and vertually indestructible.

Thanks for your interest. See you on the bands

.The picture at the top is a GS35b legal limit 144 Mhz amplifier.

Steve N4PZ



432 Mhz GS23b panel 144 Mhz cavity

432 Mhz cavity GS23b


129278 Last modified: 2013-08-10 03:57:51, 3350 bytes

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