Our "hidden message" last week in the PSK125R mode was not as successful as the
BPSK63F two weeks previously. Because the PSK125R is a wider mode, I had to put
it as low as possible to prevent it from being audible. This put the lower part
of the PSK125R right up against the carrier, and too low for many receivers to
process. This week our hidden message will be in QPSK63, a narrower mode,
centered on 65 Hz. It begins 21 seconds after the closing MFSK32 ends (29:06
into the half hour broadcast), mixed with the closing music. There is an RSID
but, as usual, it probably won't work. To my ear, at least, the QPSK63 is
inaudible.
This weekend's show is in the usual MFSK32 and MFSK64, with
ten MFSK images, And the silent QPSK63 at the end.
Here is the
lineup for Shortwave Radiogram, program 114, 22-25 August 2019, in
modes as noted:
1:37
MFSK32: Program preview 2:40 Indian spacecraft enters lunar
orbit* 7:33 MFSK64: Data rate increase for the ISS 10:53 This week's
images* 27:56 MFSK32: Closing announcements
29:06
QPSK63 "hidden message" at 65 Hz
* with image(s)
Please
send reception reports to radiogram@verizon.net
And visit http://swradiogram.net
Twitter:
@SWRadiogram or https://twitter.com/swradiogram (visit during the
weekend to see listeners' results)
Facebook group: https://www.facebook.com/groups/567099476753304
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