We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissable in your locale.

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Messages - KaySeeks

Pages: 1 ... 65 66 67 68 69 70 71 72 [73] 74 75 76 77 78 79
Shortwave Pirate / Re: WILD 100 6965 USB 2140 UTC 17 Feb 2018
« on: February 17, 2018, 2250 UTC »
Good signal into South Florida at 2249. SIO 414
Still on but signal weaker at 2327.

Sorry to read.  :'(

General Radio Discussion / Re: Longwave Pirates?
« on: February 16, 2018, 0322 UTC »
I've clamped on to a strand of barbed wire fence as a ground plane for verticals. Works fine if you've got a tuner. There was someone I heard about who hooked into a guardrail for a SW tx and was well heard, but I don't recall who it was. That RF has to go somewhere.

I've used chain-linked fence as part of a ground radial system at HF. If you got it, might as well use it.

General Radio Discussion / Re: Longwave Pirates?
« on: February 16, 2018, 0320 UTC »
When I was 14 or 15 years old, I made a fantastic LW TX from my Radio Shack 150-in-1 Electronic Project kit.

I was shooting for the MW band but when I first turned it on, it was apparently operating in the LW band and soon figured it out when I dropped some capacitance in the tank circuit and I got it into the MW band and could finally hear it. In any case, once I got it going, I dropped it down to LW later (to avoid daytime MW interference) and got strong enough to be heard on the old Phillips radio on the other side of the house that could tune LW.


No QSL cards issued though.  :P

General Radio Discussion / Re: The Luxembourg Effect. Ever heard it?
« on: February 16, 2018, 0305 UTC »
Sure. It was proposed back in the 1930s. It even has its own Wikipedia entry: https://en.wikipedia.org/wiki/Luxemburg%E2%80%93Gorky_effect

If you want to hear it in action live, go to the UTwente SDR and tune to 162, where Radio France  used to be (until Jan 1, 2017). They left the TX on (without normal voice modulation) because, in addition to Radio France programming, it was carrying the digital modulation of the national time signal and they didn't want to remove access to that by shutting down the TX completely. https://en.wikipedia.org/wiki/Allouis_longwave_transmitter

In any case, you can hear voice modulation underneath that is co-incident in time with another station (forget which one). While I guess that could be a spurious product in the SDR, it is marked as being the Luxembourg Effect on the SDR dial. (I assume others have heard it on other receivers to make it not just an artifact of the SDR.)

HF Mystery Signals / Re: HAARP 6300 KHz 20 Dec 2017 0747 UTC ?
« on: February 11, 2018, 1046 UTC »
For future reference you might want to include more detail in your screen shots. 

Fair enough. I wasn't planning on posting it or even researching it at the time so wasn't concentrating on the details.

With that said I suspect each graduation is 10 kHz for a couple of reasons.

Seems right.

If it is another heater there are many possible sources, remembering what RX you were using at the time might narrow it down a bit.

Possibly KA7U in western Idaho but I am not at all sure.

European Pirate / Energy FM 6235 AM 0925 UTC 11 February 2018
« on: February 11, 2018, 1033 UTC »
Instead of Coast FM, today it's Energy FM but also from Tenerife. Similar programming - non-stop dance tracks. Programming was parallel to this: http://streema.com/radios/Energy_FM_92.1

Almost listenable in the Netherlands on a portable and a wire. Then I turned on the Twente SDR for the synchronous detector and SIO 242 there.
Checked some USA east coast SDRs and several have carriers but only one in Acton, MA had a listenable signal.

Tuned out 1030 UTC.

Shortwave Pirate / Re: UNID SSTV 6930 USB 0101 UTC 4 Feb 2018
« on: February 07, 2018, 0924 UTC »
I guess he was trying to get your attention

Achievement unlocked.

HF Mystery Signals / HAARP 6300 KHz 20 Dec 2017 0747 UTC ?
« on: February 07, 2018, 0910 UTC »
I am not exactly sure which SDR I was using at the time but based upon the similar modulation patterns that I have seen on YouTube videos, I'm assuming that this is probably HAARP. Does that seem right?

Huh? / Re: Happy Groundhog Day!
« on: February 02, 2018, 2207 UTC »
Hail the Groundhog, harbinger of Spring and filler of bellies! Hail!

I'm sorry but there is an insufficient amount of discussion around death in this thread.

Braised Groundhog Recipe

OK, may be this is moving in the right direction. Not human death but...

Equipment / Re: WOw, for those with $$ to burn
« on: February 01, 2018, 2148 UTC »
Note that this is LDMOS. Since we're talking big money, you might as well throw GaN into the mix (Hi Stretchyman!). The maximum die temperature is the same (225 C for both GaN and this LDMOS transistor) and it appears that the costs of both this transistor and GaN might be in the same ballpark too.

I got a chuckle over NXP making a reference design at 27 MHz for this. I assume it's a benchmark for 2-30 MHz performance, but I still got a kick out of a 1500 W amplifier reference design marked specifically for that frequency. "CQ SKIPLAND, CQ SKIPLAND", as they used to say back in the day.

Also, I am shocked that 500kw transmitters exist. Can you imagine paying for an extra 250 kw and get half an S point.

The Hungarians paid a lot of money for that 2 MegaWatt TX because they have a lot of expats living within 2000 km of Hungary who want to hear something from the homeland and sometimes their listening conditions aren't that great. The extra dB isn't for the folks living down the road from the TX, it's for the folks 2000 km away driving in their car, coping with MW band interference.

(I also wouldn't want to live within 30 km of that TX, but that's another story.)

Most receivers have bandwidth controls.  Run 5-10 KHz audio, and let the listener decide what they want to hear. 

+1 on that.

For a free radio station that could attract SHARKS, since any idiot can tune AM, but much better radios and SWL ops needed to tune SSB.

If you are going to be an SWL, you're going to be tuning in SSB at some point in your lifetime. It's sort of the low barrier to entry for the hobby. Everybody who is going to listen on SW to a pirate can basically handle tuning SSB to within 10-30 Hz. It's not terribly complicated.

Put some music into an SSB TX sometime and listen to it on a nearby AM RX. You will recognize that it is music regardless. Now imagine that signal getting into your neighbor's telephone or TV. They are also going to recognize it as music too. That won't help your case.

The authorities can tune SSB just like they can tune AM. They can DF SSB just as well as they can DF something with a carrier.

Your argument makes no sense.

The RF Workbench / Re: Amperage of Fuse in Streachy Lunch Box
« on: February 01, 2018, 0157 UTC »
A necessity for every bench, especially with the SMD stuff.

The best days of the 12AU7 were quite a while ago. Better get used to smaller stuff.

A five pack at Harbor Fright will set you back a whopping $4 https://www.harborfreight.com/5-piece-loupe-set-98722.html

Or get your self a cheap microscope that you can work under with a large working surface. I can't solder anything smaller than a 1206 (Imperial size) component without one. For this one, just rotate the base out of the way for bigger items.

Or go dee-luxe: https://www.google.com/shopping/product/4176465808603979983?biw=1610&bih=826&q=soldering+microscope&oq=soldering+microscope&prds=paur:ClkAsKraX0z1C-XT7GIxLaJw0QhdHj1niv3r6sUaq5qwvKXlDsDsoNpAtcegO4b96Jrxgvl0SV5FD9MobWqzHWmr7aB35gmBUxMF6cixIjpPKypp0kCY1-13zRIZAFPVH7135Rfy1l8ZSA-BVOYkot_eNvOGCA&sa=X&ved=0ahUKEwiRz5fQzYPZAhXs8YMKHXKjDOEQ8wII8wM

Pages: 1 ... 65 66 67 68 69 70 71 72 [73] 74 75 76 77 78 79