[AK-VHF] QRV on 927.5 FM

[Edward R Cole]

I finished installing my 900 MHz system and tested it., today.

The radio problem was due to "pilot error" plugging the mic connector 
in backward.  I have 14w into a load and 13w indicated into the 
antenna with 2:1 SWR.  I measured 5.6w at the tower so guess 5w at 
the antenna.  Preamp (0.26 dBNF - 22 dB gain) is working and sma 
transfer relay is being used to bypass it.  The major work was 
modifying the DEMI sequencer to control the two relays and preamp so 
nothing got hurt.  I broke out the mic PTT line to control the 
sequencer and then looped out of the TX2 stage to key the radio into 
Tx.  The radio (GE TMX-915) is located in the shack so lots of loss 
getting RF to the eme tower top where the 18.5 dBi 33-element 
loop-yagi lives (vertical pol.) at 52-feet.

I am still working on my 2m system and testing so will be another day 
until the system is raised on the tower.  I should be ready to try 
927.5 on the Tuesday Net.  Not sure how far 5w will reach (maybe only 
KL7XJ 15mi south of me).  I have a 150w MOT amplifier with some 
burned PS components that eventually will provide lots of power 
located at tower top.

My 1296-eme system is QRV on the 16-foot dish with 50w and I will 
begin testing on the Moon middle of the week when the Moon is higher.

73, Ed - KL7UW
http://www.kl7uw.com
dubususa at gmail.com
"Kits made by KL7UW"