[AK-VHF] Sept. ARRL VHF Contest Preparations

[Edward R Cole]

I successfully transplanted the new Motorola 900-MHz amplifier 
board.  Rated as 150w in 859-904 MHz range (marked on a ferrocoom 
isolator).  I take off my output before the isolator which is disconnected.

On 927.5 MHz, I am able to get up to 64w output before my 26v PS is 
overloaded and looses regulation.  That occurs with >5.0w 
drive.  Output appears to saturate before that starting at 4.0w 
drive/64w output.

I have about 2.8w at the tower from my TMX-915 mobile radio (running 
14w in the shack).  That results in 58-60w output into a 50-ohm termination.

Rainy day today, so yet hope to re-install the 900-MHz PA plus my 
repaired WA2ODO preamp and an extra TR relay (for better isolation of 
the preamp and termination of the preamp input to a 50-ohm load when 
not in use - the 33-element loop-yagi and electronics is mounted at 
top of my 2m-eme tower so it will be immersed in very high emf at 144-MHz).

I am continuing assembly of a 902-906 MHz 9w DEMI transverter for a 
customer and may have it ready for testing on Saturday/Sunday during 
the contest.  9w would result in 2w drive at the PA with est. 55w 
output on 902 or 903 MHz.  If that is not ready I still have 927.5 FM 
available.

50-144-223.5-432 are all functional for the contest.  I will not 
likely have 1296 ready.

73, Ed - KL7UW
http://www.kl7uw.com
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