[Lowfer] Whatever happened to our old Lowfer band?
Bill de Carle
ve2iq at magma.ca
Wed Feb 23 08:43:29 EST 2011
It must be at least a year now since I've done any listening on the
160-190 Khz Lowfer band. Yesterday I set up two loops to favor a
NE-SW line and tuned a preamp for 188.83 Khz, which produced good
copy of EAR's QRSS30 beacon for most of the day. When nightfall came
however, all hell broke loose!
First thing I noticed: a high power pulsed signal appeared spreading
RF all over the place. This was not accidental radiation, it was a
deliberate transmission right in the band. Shortly afterwards I
observed someone sending sequential tones - very strong signal
appearing out of nowhere. Guess it could have been WSPR or fast
Jason, something like that, but definitely much too loud for 1 watt
DC input to the final and a 50-foot antenna. All the while having to
contend with the broadcast station on 189 Khz (Iceland?) obliterating
the top of the band with its music. My S-meter climbed up, up until
the AGC suppressed EAR's signal below visibility. Admittedly I had
too much gain before the Rx for those conditions but I didn't feel
like going out in the dark with a flashlight to change the
configuration at the antenna so I gave up.
I don't remember things being that bad in years past. In particular,
those pulsed and tone transmissions don't seem to be coming from any
amateur station - they're way too strong and obviously designed to
punch a message through on a crowded channel. Like when 11 meters
degenerated into a shouting match where the game was to see who could
run the most power without getting into trouble. I've seen
similar pulsed and tone signals on the hifer bands: 13.553-13.567
Mhz and especially around 6.777 Mhz in the Canadian unlicensed
band. I'm wondering if some company is selling uncertified
transmitters to the general public or what else might have
happened. There was no significant static (QRN) last evening, it was all QRM.
My rant for the day.
Bill VE2IQ
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