Well ... just for fun ...
I set 2 receivers sharing the same mini whip: a SDR-IQ and a KiWi
SDR.
On both there is two signals: one at 1476000, another at 1476260
(I read somewhere about Iran 260Hz above).
Using Argo QRSS20 I got two signatures: one that looks like an old
ovenized xtal osc and a stable one.
I verified both signals using an KiWi SDR in Germany too. Of
course that the 1KHz bips are there. But the same signals are
there as well: the ~85mHz wanderin' carrier and the 3W one (this
one stable, ~400mHz above 1476000)
May be tomorrow I check this again earlier.
Capture attached. Who knows ...
73
Marcus
PY2PLL + PY3CRX
GG66rf.
Em 09/11/2018 13:05, Markus Vester
escreveu:
Thanks
Tom and Clemens, that's very nice!
Indeed there are some issues with GoogleMaps, for example last
time I looked https://sdr.hu/map didn't show the Kiwi SDR
locations. As Clemens indicated,
http://k7fry.com/grid/?qth=JN59MN21HF should work. Or in
proper coordinates, the wire antenna is attached to the
tower at 49.546575 N, 11.019437 E.
Best 73,
Markus
-----Ursprüngliche Mitteilung-----
Von: DK1IS <[email protected]>
An: rsgb_lf_group <[email protected]>
Verschickt: Fr, 9. Nov. 2018 14:13
Betreff: Re: LF: 1476 kHz AM
Am
09.11.2018 um 00:39 schrieb Markus Vester:
After the sad demise of all LW and MW
broadcasts in Germany, a handful of pioneers
came up who are operating legal low-powered
medium wave stations in the context of a radio
museum or for educational purposes. One of them
is Ralph (DL2NDO, one of the participants in the
legendary Donebach 137 kHz activation in 2002).
He has obtained a transmitting license for 1476
kHz (former frequency of Vienna
Bisamberg), built a 3 Watt AM transmitter, and
with the help of a small team raised a
quarterwave antenna on the Fraunhofer premises
south of Erlangen (JN59MN21HF).
Yesterday they got on air for the first time,
running a preliminary test transmission
consisting of a switched 1000 Hz beeps (one
second on, one second off, audio frequency
locked to the RF carrier). This pattern will
be continued for a few days, before they will
eventually.take over the audio from the local
DAB student radio "funklust".
The current test pattern is relatively easy to
make out in the noise so it may be a good chance
for some DX detections. At night we've actually
heard the beeps on Twente SDR and a couple of
German Kiwi-SDRs. But I guess using narrowband
signal processing techniques, the carrier and
coherent tones coud make it much further. The
carrier frequency is derived from an OCXO and is
currently at 1476000.411 Hz.
Will anyone in the group take the challenge?
Best 73,
Markus (DF6NM)
Fb audible signal at DL0AO (JN59VK)! RX
Perseus, Ant Miniwhip, see screenshot. Slight selective
QSB. Similar results with their North America beverage.
By the way: all programs using GoogleMaps for
QTH-locator identification seem to be inactive because of
new Google restrictions.
73,
Tom, DK1IS
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