Thanks, Gary.... I do look forward to a DXpedition
together, for sure. I'm going to have a difficult time sorting between
wanting to use my big gear to chace unQSLed stations and wanting to pile
up loggings (hopefully) with a couple of ultralights. I really don't know
what I'm going to do!
toggle quoted messageShow quoted text
When you get that transplant article ready, do let me do the fine tuning
of the photos. I can likely turn it around in 24 hours or less,
since we are talking about 15 minutes of work, or less.
Now to get at answering that excellent e-mail on the Awards
At 03:17 PM 4/11/2008 -0400, you wrote:
Your success in coupling effective external
antennas to the SRF-39FP and DT-200VX ultralights should give you lots of
exciting TP-DX at Orcas Island. Especially with the superb
selectivity mod installed by Guy on the DT-200VX, that digital model
should really come in handy around September and October.
In February, a couple of DT-200VX units were
modified here to receive 6.25" loopstick transplants (which greatly
boosted their sensitivity), but the Icom filters provided by Guy have yet
to be installed. The units were taken to Grayland on March 13th, where
they received very loud TP signals from Japan, but with no selectivity
improvements, they had a tricky time dodging the domestic QRM in chasing
the weaker TP's. The modified SRF-39FP (also with a 6.25"
transplant) did much better selectivity-wise, splitting off NK-653,
China-963 and HLCA-972 without too much trouble. A lot of time was
used trying to receive VOA-1575 on the QRM-troubled DT-200VX (only), when
the SRF-39FP possibly could have nailed it.
As Guy and I both discovered, the DT-200VX
alignment usually favors either the low end or high end of the band, but
not both. The design is not broadbanded like the SRF-39FP, and two
factory units rarely have sensitivity equal in all areas of the
band. My own "solution" was to align one
transplant-enabled unit to favor the low end, and one to favor the high
Having completed the fanatical loopstick
transplant experimentation with the SRF-39FP (and hearing the 20.25"
model run wild over classic DX portables in sensitivity), the DT-200VX
and ICF-2010 are the next logical candidates for
"mega-surgery." If an Ultralight tinkerer can
successfully transplant a 14" or 20" loopstick into the
ICF-2010, it may be of some interest to the general AM-DX community (as
well as restoring its proper function as a "spotting receiver"
for the hot-rodded Ultralights :>)
Anyway, John, congratulations on your success,
and I think both of us will have a lot of fun in the fall. Maybe
both of us can show up at Grayland on the same date, and compare the
results of our divergent experimentation.