1396
General Radio Discussion / Re: Re-arranging the FM band
« on: January 03, 2014, 1047 UTC »Quote
Clearchannel wouldn't stand for it. 'Nuff said.
I hate to say it , but your right. He who has the gold makes all the rules, ya know...
+-RH
Shortwave Pirate Radio In North America And Around The World, And Other Signals That Go Bump In The Night
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 permissible in your locale.
I hate to say it , but your right. He who has the gold makes all the rules, ya know...
+-RH
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I hate to say it , but your right. He who has the gold makes all the rules, ya know...
+-RH
1397
North American Shortwave Pirate / Re: RTN 6924.7 AM 2256 UTC 1 Jan 2014
« on: January 02, 2014, 0022 UTC »
Moved to 6945 KHz following listener advice around 0020z.
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1398
North American Shortwave Pirate / XLR8 6935 KHz USB 2350z+ 1-1-2014
« on: January 01, 2014, 2356 UTC »
Hearing ambient dance music on USB. About +10 on peaks on the loop and G31DDC.
2357z XLR8 ID
0000z Another voice over ID.
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Zane: I know, I know. Must be the hangover from last night
I think I got it fixed now!
2357z XLR8 ID
0000z Another voice over ID.
+-RH
Zane: I know, I know. Must be the hangover from last night
I think I got it fixed now!
1399
North American MW Pirate Radio / Re: Pirate Radio Boston / Undercover Radio 1720 khz AM 0210 UTC 12/26/2013
« on: December 26, 2013, 0610 UTC »
Sadly, just a carrier about S3 here on a HF loop. I guess its time to build one for MW, and chase the frog farts out of my RX.
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1400
The RF Workbench / Re: So...what can a person do with 2 or 4: WL23791/TH150
« on: December 19, 2013, 1827 UTC »
You could (in true indie spirit) use microwave oven transformers. Locate two that are the same, and remove the shunts from them. There was a neat article all about it in QST recently.
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1401
The RF Workbench / Re: So...what can a person do with 2 or 4: WL23791/TH150
« on: December 19, 2013, 0209 UTC »
It might be a good candidate for grounded grid service. That eliminates the need for neutralization, at the expense of lower power gain. Datasheet says not to exceed 115% carrier level, so your looking at an honest 10 KW PEP with probably 1K of drive. Software is available on the web for calculating tank values for the output network. You will need 7 KV @ over 1A for full ratings.
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1402
The RF Workbench / Re: So...what can a person do with 2 or 4: WL23791/TH150
« on: December 16, 2013, 0538 UTC »
Either high power audio (read: Modulator 
) or perhaps MW Finals. Lacking published specs, we can only guess.
+-RH
) or perhaps MW Finals. Lacking published specs, we can only guess.+-RH
1403
North American Shortwave Pirate / Radio Free Whatever 6925 KHZ AM 12-15-2013 0235z+
« on: December 15, 2013, 0237 UTC »
Two OM's doing a WWII/Pearl Harbor retrospect show. About S9 here, peaks to a bit over +10.
0238z Andrew's Sisters "Boogie-Woogie Bugle Boy"
0254z fades seem to be getting deeper, down to S7 at times.
0259z "This is a Radio Free Whatever Timewarp" ID
0309z A slow crooner tune, reminds the Old professor of the looney tunes with the guys singing on stage, and all you can see is his arms and legs behind the mic stand.
0336z "Chattanooga Choo-Choo"
0343z Closing break, email as djdickweed@gmail.com
0343z Signoff
Splitting time between the kitchen and the radio room, enjoying the laid-back swing though
Production is nice and tight, great work!
+-RH
0238z Andrew's Sisters "Boogie-Woogie Bugle Boy"
0254z fades seem to be getting deeper, down to S7 at times.
0259z "This is a Radio Free Whatever Timewarp" ID
0309z A slow crooner tune, reminds the Old professor of the looney tunes with the guys singing on stage, and all you can see is his arms and legs behind the mic stand.
0336z "Chattanooga Choo-Choo"
0343z Closing break, email as djdickweed@gmail.com
0343z Signoff
Splitting time between the kitchen and the radio room, enjoying the laid-back swing though
Production is nice and tight, great work!
+-RH
1404
The RF Workbench / Re: So...what can a person do with 2 or 4: WL23791/TH150
« on: December 14, 2013, 2324 UTC »
Richardson Electronics lists that as a dielectric heating tube. Anything with strap leads is usually low frequency, IE don't try and build an FM PA out of it. I can't vouch for its capabilities because I can't find any data on it either, but anything I've looked at that specifies something for power oscillator service probably isn't very linear. It would make one hell of a gheto blaster though
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1405
The RF Workbench / Re: So...what can a person do with 2 or 4: WL23791/TH150
« on: December 12, 2013, 1059 UTC »
Any possibility of a picture?
Specs say 10KW PEP output at 5.4 KW dissipation. Thats a fairly hefty tube for its day. You'll probably need a kilowatt to drive it to full ratings.
+-RH
Specs say 10KW PEP output at 5.4 KW dissipation. Thats a fairly hefty tube for its day. You'll probably need a kilowatt to drive it to full ratings.
+-RH
1406
The RF Workbench / Re: Simple but effective FM transmitter help
« on: December 05, 2013, 1553 UTC »
If I may offer some advice on etching boards; I realize it requires more time and a little more expense, but photo etch processed boards turn out much better than anything I have used before. My first board was for a veronica 5W VCO transmitter in the late 90's and used Ferric Chloride (Yuck, hate the stuff) and a direct transfer method outlined on Mark Wise's AMN92 site. It didn't turn out very good, lots of pinholes in the copper, overcut traces, ect. My next attempt used the toner transfer paper, which has its share of issues as well. Its difficult to get the toner to stick to the board and not have it flake off during the etch. The board did turn out better, though. Finally, the Old Professor got me into the photo transfer process and that's what I've used ever since. You print out your artwork on transparency film (You have to get this from behind the counter at at Kinko's or something) and hold it against a presensitized board with a thin sheet of glass from a picture frame and expose it to UV for a few minutes, then develop it, and etch with Ammonium Persulfate, which works ten times better than the brown stuff. Do it right and your boards will look commercial. I can usually make out the raster lines in the laser printing in my finished boards, something the toner method could never do. Most of this is under the info section of Harry's site, and also at the MG chemicals site http://www.mgchemicals.com/products/prototyping-and-circuit-repair/.
Also FWIW, most of the professional etch kit components can be made from stuff you buy at a big box mart or equivalent.
Good luck!
+-RH
Also FWIW, most of the professional etch kit components can be made from stuff you buy at a big box mart or equivalent.
Good luck!
+-RH
1407
The RF Workbench / Re: Simple but effective FM transmitter help
« on: December 05, 2013, 0631 UTC »
Yup, its been a cookbook site for me since I started playing on the internet!
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1408
The RF Workbench / Re: Simple but effective FM transmitter help
« on: December 04, 2013, 2046 UTC »
That kit looks like another BA1404 based kit. If you have the patience to roll your own boards, have a look at these sites;
www.sm0vpo.com Lots of ham based stuff, but a few fm transmitters, and a stereo encoder too.
http://pira.cz/eng/archive.htm similar stuff, more pirate oriented.
Have fun, and if you need help, just yell!
+-RH
www.sm0vpo.com Lots of ham based stuff, but a few fm transmitters, and a stereo encoder too.
http://pira.cz/eng/archive.htm similar stuff, more pirate oriented.
Have fun, and if you need help, just yell!
+-RH
1409
General Radio Discussion / Re: Great site radiodiscussions.com
« on: December 04, 2013, 1424 UTC »
I'm sure there are others, but you could try;
http://www.yourmidwestmedia.net Has areas for all regions of radio.
+-RH
http://www.yourmidwestmedia.net Has areas for all regions of radio.
+-RH
1410
General Radio Discussion / Re: Greece/CHU 9420 mixing together
« on: December 03, 2013, 0626 UTC »
sometimes loose connections in your antenna can cause intermod, particularly with strong signals. If you verified its not there with another receiver, however, the problem is in the radio. Receivers without front end agc, like many portables, are prone to intermod. That's the reason I asked about mw images, as the signals present at the antenna port are usually sufficient to cause problems with intermod.
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