[Elecraft] Ham radio as a side dish
K8TE
billamader at gmail.com
Mon May 28 16:13:27 EDT 2018
I'm amazed that such an eclectic group has so many similar experiences in
which I am included: flying, NAVAIDs, boats, trumpet, bass in choir, etc.
Adding to the ILS story, while stationed at Canon AFB NM, I also worked
full-time as a TV broadcast engineer. I was part of a team that installed a
new FM station at the same location.
Shortly after that, I got word at the Communications Squadron Chief of
Maintenance office where I worked of F-111D pilots experiencing country and
western music on on runway's ILS approach. The FM frequency was 107.5, just
below the ILS localizer band. My Chief and I stook a giant RADAR spectrum
analyzer (two-man carry) to the FM TX site. As expected, it was clean.
Next, I visited the Avionics shop to put a USM/323 RF signal generator on
one of the F-111 ILS receivers. With a 105.5 FM modulated signal, the ILS
RX lit up! It was as broad as...! The least expensive solution was to move
the ILS (Localizer and Glideslope since they're related) to a new frequency
pair. That meant new antennas, phasing lines, alignment, etc. I'm certain
it cost more than the new RCA FM transmitter and antenna/feedline, but was
"easier" to accomplish.
BTW, an HT and helmet-mounted headset work pretty well in sports car racing.
However, I never tried to add HF mobile to my Spec Miata, much less try CW
while on the track! I have some interesting in-car video recordings of me
calling my wife after some "incidents." 73, Bill, K8TE
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