>From the ARRL Letter (Vol. 17, No. 5 -- January 30, 1998):
________________
W1AW INAUGURATES NEW 20-METER BULLETIN RIG
If W1AW's 20-meter signal has sounded especially robust in the past
couple
of weeks, you can thank the generosity of manufacturers and lots of hard
work on the part of the W1AW and the ARRL Lab staffs. As a first step in
upgrading and replacing some of its aging station components, W1AW has
purchased and installed a new Ten-Tec OMNI VI Plus transceiver and a
custom-built Command Technologies single-band, three-tube, grounded-grid
linear amplifier. Eimac donated the three 3CX800A7 power amplifier tubes
for
the Command amp. With help from other Headquarters staffers, W1AW Station
Manager Joe Carcia, NJ1Q, installed the new gear during January to
replace
the older Harris commercial transceiver and amplifier used to air W1AW
code
practice and bulletin transmissions on 20 meters. Carcia praised both
manufacturers for going the extra mile. "Ten-Tec modified our OMNI VI
Plus
by installing additional crystal ovens," he explained. "The result is a
clean and very stable signal." Carcia said Command Technologies had to
redesign its HF-2500E 5 kW linear, normally a desk top unit, so it would
fit
easily in the W1AW equipment racks. The RF deck was modified to allow a
maximum of 1500 W output. The unit also has overdrive protection to
ensure
longer tube life. Earlier this year, the station also installed two new
MFJ-812B VHF SWR/wattmeters, donated by MFJ, plus a new two-meter
bulletin
transmitter--a Kendecom MT-4 repeater transmitter.
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