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Author Topic: RADIO X 6940 AM 0350 UTC 11 JAN 2022  (Read 535 times)

Offline ~SIGINT~

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RADIO X 6940 AM 0350 UTC 11 JAN 2022
« on: January 11, 2022, 0353 UTC »
RADIO X 6939.400 kHz AM 03:50 UTC 11 JANUARY 2022

Post from Broadcast Announcements:
https://www.hfunderground.com/board/index.php/topic,91510.msg292492.html#msg292492

03:50 UTC - Nothing heard at this time from my location.
03:56 UTC - Weak and unreadable via the HFU 120 ft T2FD KiwiSDR. Agree, this is a poor choice of frequency due to the LINK 11 UTE on 6942.0 kHz.


RSPduo | Barker & Williamson antenna | Toronto, Ontario Canada
« Last Edit: January 11, 2022, 0401 UTC by ~SIGINT~ »

Offline outhouse radio

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Re: RADIO X 6940 USB 0350 UTC 11 JAN 2022
« Reply #1 on: January 11, 2022, 0354 UTC »
not a good choice of freq
but
can hear a few words at times under the thing that is always there
not enough to understand anything

Offline RexFeral

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Re: RADIO X 6940 AM 0350 UTC 11 JAN 2022
« Reply #2 on: January 11, 2022, 0442 UTC »
Good Evening,

It is a CW transmission.   
I am currently "rock bound" to 6940, it is the only crystal I have on hand at the moment that is in the 6920 - 6990 range.
The xmtr is a GRC-109 putting about 10 watts into a 100' wire up about 20'.

Rex
Best Regards,
Rex

Radios: Ten-Tec Jupiter, AN/GRC-109, National NC-121
Antennas: 100' Wire up 20', G5RV Dipole, 10/11 Meter Dipole

Offline outhouse radio

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Re: RADIO X 6940 AM 0350 UTC 11 JAN 2022
« Reply #3 on: January 11, 2022, 0458 UTC »
Good Evening,

It is a CW transmission.   
I am currently "rock bound" to 6940, it is the only crystal I have on hand at the moment that is in the 6920 - 6990 range.
The xmtr is a GRC-109 putting about 10 watts into a 100' wire up about 20'.

Rex

ok
never heard any cw with the link 11 there , but there was voice there ..
-
study up on crystal grinding , and then try your hand at grinding it up to a usable freq..

« Last Edit: January 11, 2022, 0510 UTC by outhouse radio »

Offline RexFeral

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Re: RADIO X 6940 AM 0350 UTC 11 JAN 2022
« Reply #4 on: January 11, 2022, 0507 UTC »
I've tried crystal grinding before but never had much luck.  I'm going to double check my xtal stash.  I have quite a few that are in the 4000 - 5000 kHz range, I may have one in that range that would work.  Can always check on "fleabay" too :D

Rex
Best Regards,
Rex

Radios: Ten-Tec Jupiter, AN/GRC-109, National NC-121
Antennas: 100' Wire up 20', G5RV Dipole, 10/11 Meter Dipole

Offline outhouse radio

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Re: RADIO X 6940 AM 0350 UTC 11 JAN 2022
« Reply #5 on: January 11, 2022, 0523 UTC »
i used to grind them dry on a flat diamond steel (knife sharpener) and wipe down with alcohol ..
-
don't know if anyone followed up on this ---
-
This was a question on the Mil Surplus mailing list:
Has anyone tried using the GRC-109 on AM ?  I notice its cathode keyed  though the osc and pa are keyed together. I further notice that the 10 pin keyer  socket with its plug shorts the osc and pa cathode together, so, using another  plug one could ground the osc cathode separately while then cathode modulating  the pa. Also, on the same plug the pa screen volts are accessible, so the pa  could be screen modulated.
 Has anyone tried this ?
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hell - i had to look the rig up on the net to refresh my memory of what it is - got one or two in my collection of mil stuff along with tons of other various things

Offline redhat

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Re: RADIO X 6940 AM 0350 UTC 11 JAN 2022
« Reply #6 on: January 11, 2022, 0539 UTC »
73 meters would be a much better choice this time of the night.  With the proliferation of cheap DDS kits on ebay, ditch the rocks.  Much better frequency stability and infinite frequency choices.

BTW if this is to turn into a technical discussion, it should probably be moved to the workbench forum.

+-RH
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