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Messages - ROKFRED

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1
Listening to these nice oldies....OK audio for USB,,,10 over S-9 in Western Pa.

2
Sounds like a professional production...Reading S+10 over9 steady good AM sound in Western Pa/.

3
hearing Peter Gabriel on a SDR in New Jersey 1740

4
I'll have to listen. 5050 is an interesting freq. Most of the hf bands are very noisy right now.

5
Mic check

6
YUP most likely the situation. The tiny slivers of "open frequencies" will be disappearing as more AM's get assigned those freqs by the FCC, to enhance their coverage with stereo fidelity. It only enhances their present coverage for the AM side. Usually a 250 watt transmitter and maybe some height restrictions to protect another licensee using that freq or adjacent. There are still those crazy rules about 1st adjacent and 2nd adjacent.
These mini FM's are able to use Yagi antennas to direct their signal only for their intended audience.
Fred

7
I guess we have to let mother nature have her way. It was just steady static crashes. Need a lot of transmitter power to overcome the noise.

8
General Radio Discussion / 11 MHZ ....15 MHZ listening
« on: June 25, 2023, 2251 UTC »
I see a lot of interesting reports of steady strong signals on 11mhz ?? 15mhz on facebook People posting short clips of playback of really strong steady signals playing music. Any special interest of activity on these frequencies during the daytime?

9
General Radio Discussion / Re: AM STEREO
« on: June 19, 2023, 1423 UTC »
OK NitroEngine
At least make use of the investment of the C-QUAM generator I bought on eBay. My present 1620khz signal is using a different model Panasonic C-QUAM generator that only goes up to 2mhz RF carrier.
The latest purchase generator goes up to 280mhz.
You gave hope to continue to carry the C-QUAM torch.
Fred

10
General Radio Discussion / Re: AM STEREO
« on: June 17, 2023, 1508 UTC »
Oh Boy.....that wasn't a good thing to read. And looking online I do hear clips of X-FM who uses C-Quam and the fading signal can be annoying as the pilot comes and goes. The "stereo image" was stable. I didn't detect movement. Both audio clips are below.
I think they figured out how to reduce/eliminate the moving platform effect for regular "DX" of AM broadcast stations, quite a while ago.


https://swling.com/blog/2014/02/listening-to-shortwave-radio-in-stereo/

11
General Radio Discussion / Re: AM STEREO
« on: June 17, 2023, 0210 UTC »
hi Jacob
Going to shaking things up on 43M band.....6955 on KRAP and using C-QUAM on shortwave.

12
General Radio Discussion / Re: AM STEREO
« on: June 15, 2023, 0054 UTC »
thanks for reports and comments.
FYI I sign off around 8PM from the skip coming in from the many 1620's showing up. They really cut my coverage down at night......so i just turn it off and back on around 10AM.
Fred

13
General Radio Discussion / Re: AM STEREO
« on: June 14, 2023, 1616 UTC »
Sure.....
I'm using Station playlist as the playout software and the "radio station sound" for AM 1620. There is some processing for audio using Stereo Tool. That audio goes to more processing using APHEX Compellor and Dominator to the RF exciter. A Panasonic VP8132A which generates the C-QUAM audio and RF set at 1620khz. The antenna is a vertical resonant at 1620khz

Fred

14
General Radio Discussion / Re: AM STEREO
« on: June 14, 2023, 1541 UTC »
Ohhhh
The Denon tuner server might be at its limit for listeners. I think it can handle 3.

Fred

15
General Radio Discussion / Re: AM STEREO
« on: June 14, 2023, 1540 UTC »
hmmm that's strange for the Denon link not working.
The link should open another folder in the browser and a black screen with the player. After 5 seconds or so it automatically should play. Unless the server is kicking you off.

The SDR is S-50 but no overload indicator and the audio is fine.

Thanks for the feedback

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