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Jammer on 730?

Probably NOT groundwave during the day. I've heard stations on the X-Band from the Dakotas, Iowa, Mississippi and elsewhere at high noon here in Central KY. Due to their higher frequencies, propagation can act like stations in the shortwave spectrum. SKYWAVE is a distinct possibility during the daylight hours for X-Band.
 
I can see getting a skywave on the X band day in the winter but we're already past the spring solstice.

Knowing whether or not the signal faded would be a clue too.
 
gar fla said:
I can see getting a skywave on the X band day in the winter but we're already past the spring solstice.

Knowing whether or not the signal faded would be a clue too.
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The only thing about winter on lower SW frequencies is the relative absence of noise. But you can have daytime skywave pretty much any time given a low noise floor. I can recall sub-X-Band daytime skywave in October when 4VEH 1035 10 kw from Cap Haitien, Haiti, was heard around noon in Cleveland, OH... very quiet day. And such reception was noticed several more times, but never when late Spring to earlyt Fall noise was prevalent.
 
gar fla said:
But KKLF and KBGG are hundreds of miles away over land. They should be impossible to get in the daytime from there.

And I'm wondering if a trace of KVNS can be heard there in the day too.
Click to expand...

During one of the CONELRAD tests in the very early 60's, 11:30 AM to Noon, EST, from Cleveland, OH, I got Winnipeg on 1470... a 5 kw station on a totally clear channel on a nice clear day. Could have been skywave, at that frequency, but considering that I had some low-band prairie Canadians the same time, and with the incredible conductivity along much of the path, it could have been ground wave, too. 540 Watrous was also heard then.
 
1700 here during the daytime is blank. What I was referring to was the strongest x-bander at night seems to be 1700. Dallas makes sense. I hear Des Moines at home (Chicago area) all the time at night....but that's not what I'm getting here.

Nothing on 1660 here during the daytime. But I'll move around and keep trying during the week to see if something turns up.

And yes, I'm aware of all the skywave that's possible on the x-band during the daytime, but it's a little late in the season for most...if not all....of that.

I can now confirm positive ID of KCTA here during daytime.....definitely a salt water path across the gulf. Signal is weak, but definitely listenable.
 
Barrier island gulf front. And yes....big difference out here versus the mainland.

Specifically, I'm in Florida....but Alabama is exactly three doors to the west. (First building to the west is the other unit in the same complex as me, building after that is the Florabama, building after that is a parking structure/condo on the Alabama side).
 
radioman148 said:
Didn't he say after sunset?
Click to expand...

Indeed, he said that, yes. I went back and reviewed my post. :)

Also, on the topic of 1660 out of Ft Myers/Marco (or wherever). Nice signal here just before sunrise....so maybe they had already powered up. At some point during the week I'll see if I can find a spot where it might be audible during daylight hours.

It was also interesting to note that they've picked up "The Avenue" format.
 
Is it possible that Cuba is "testing" 730 for future jamming use, either AM or SW? I think I hear it here too (South FL)....but I don't do much daytime AM DX anymore.

cd
 
cd637299 said:
Is it possible that Cuba is "testing" 730 for future jamming use, either AM or SW? I think I hear it here too (South FL)....but I don't do much daytime AM DX anymore.

cd
Click to expand...

Why would they test, if they have been jamming and blocking Miami area AM Spanish langauge stations for over 40 years? They certainly know how to do it.

The only three AMs they might want to jam, WAQI-710 and VOA Marathon-1180 (Radio Martí) and VOA Comando Solo-540 (Radio Martí airborne) are already jammed or blocked.
 
I hear this same kind of noise on alot of dead sw frequencies, its identical.. me thinks its man made rfi,, a better receiver could probably filter it out.. I dont hear this noise at all in indiana,, I hear Dallas at night, and static during the day.
 
gar fla said:
I'm also wondering if you get any signal on 1660. Next time you try and if it's slow jazz or old classics, it has to be from Marco Island, Florida.
Click to expand...

Apologies for the veer off topic, but to clean up the unfinished business.... I did pick this up today at about 1pm CDT on a good car radio. Very faint and barely audible. No ID But definitely standards/jazz.
 
To close the loop from my viewpoint....

My trip moved on to Orlando the day before Easter for a business conference. High-rise steel/concrete hotel with substantial electrical noise, so not exactly conducive for DX. I did, however get a chance to step outside to a courtyard are briefly a couple of times to check things out. The noisemaker on 730 was moderate to strong evenings, but totally absent during the daytime (as were the other Cubans).

(Sidebar note for David....I had a very good radio in my rental car, which rendered WAQI as easily the best Miami daytime signal. Relatively static free and very listenable. WQAM was a distant runner up in second place....with moderate splatter from second adjacents WFLF and WDBO. This was about 20 miles southwest of downtown Orlando. Also a good nighttime path to Mexico each evening with XEQ, XEG, and XEEP among those blasting in.)

Anyway, my last stop was in Memphis Friday night. Local or semi-local sports talker on 730 had a weak nighttime signal at my location in the Mississippi suburbs south of the airport. Very easy to null, but no trace of the noisemaker.
 
I heard this "wobbler" on 730kHz at approx 0100UT, after reading about it in Glen Hauser's World Of Radio DX Listener's Digest #10-14 of Apr 08, 2010. I tuned my DX-398 to 730 and distinctly heard the 'musical saw' under some Mexican station. I can't hear it now, 04/14/10 @ 0625UT, but just a spanish station, which is most likely the one mentioned in DXLD 10-14. My GCHQ is 3 miles west of downtown San Antonio, Texas. I remember hearing the previous 'whinning' jammer mentioned in one of last year's DXLD's on 1180.
 
I either havent been persistant enough to hear it, or the signal isnt making it into central indiana
 
The jammer's been very strong at times in Central KY. Of late, however, the jammer seems to be much weaker and the Mexico City Station seems stronger here.
 
tanner said:
I hear it between Orlando and Ocala at night also one on 930
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I'm back in the Pensacola area for a week on the Gulf (essentially the beach is clean, btw). Anyway, the noisemaker is now absent from 730, but now present on 930. I heard it this evening, and will check during the day tomorrow to see if its audible then.
 
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