106
North American Shortwave Pirate / Re: Red Beacon Radio 7610 AM 2145 UTC 26 Mar 2016
« on: March 27, 2016, 0205 UTC »
0204utc, fadey carrier in California. 'Tis a pirate in new waters.
Shortwave Pirate Radio In North America And Around The World, And Other Signals That Go Bump In The Night
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107
North American Shortwave Pirate / Re: XFM 6875 AM at 0356 UTC, 3/20/16
« on: March 20, 2016, 0428 UTC »
0425utc S6 signal level here on my random wire. S3 noise floor. A little fadey. Heard ID a few minutes ago. Copy is so so. Thanks for being on XFM.
108
Equipment / Re: The mag loop project is complete (photos)
« on: March 14, 2016, 2054 UTC »
Yah, sure, I will private message you.
I had trouble with the compiling with windows, but it was fairly easy to do on Linux. I got lucky I found the right incantation to make it work. I'll send you a private message.
I had trouble with the compiling with windows, but it was fairly easy to do on Linux. I got lucky I found the right incantation to make it work. I'll send you a private message.
109
Equipment / Re: The mag loop project is complete (photos)
« on: March 13, 2016, 1343 UTC »
You're up early this morning 
As I understand it, you can get a good SWR from manipulating the area of the pickup loop.
I just ran your loop through the computer program this guy, Glen Gardner made: http://gridtoys.com/glen/loop/loop3.html
And it says your pickup should be 0.0306 square meters. But I guessed on the parameter "resistivity of loop material". I think its measured with an ohm meter.
On that web page, he tells how to troubleshoot your loop using this program.
Here's the results I got:
LOOP TYPE (CIRCLE or SQUARE): circle
LOOP CIRCUMFERENCE(METERS): 3.14159
CONDUCTOR DIAMETER(METERS): .022225
NUMBER OF LOOP CONDUCTORS: 4
RESISTIVITY OF LOOP MATERIAL (OHM-METER): .000000037
RELATIVE PERMEABILITY OF LOOP MATERIAL: .999994
LOOP COEFFICIENT OF COUPLING (K>=1/N,K<=1): .4
TRANSMITTER POWER (WATTS): 20
LOW FREQUENCY LIMIT (MHz): 6.925
HIGH FREQUENCY LIMIT (MHz): 6.95
FREQUENCY STEP (MHz): 1
Frequency: 6.925 MHz Rr: 0.0219 ohm
Rhf2: 0.0540 ohm Efficiency: 0.2882
L: 1.5260 uH Xl: 66.3983 ohm C: 346.2 pF
Z: 0.2753 ohm Q: 438.1103
Bandwidth: 15.8066 KHz. 2:1 SWR Bandwidth: 5.3953 KHz
Dynamic Resistance: 29089.78 Ohm. Potential across the Capacitor: 762.76 Volt
Pickup loop area: 0.0306 square meters
As I understand it, you can get a good SWR from manipulating the area of the pickup loop.
I just ran your loop through the computer program this guy, Glen Gardner made: http://gridtoys.com/glen/loop/loop3.html
And it says your pickup should be 0.0306 square meters. But I guessed on the parameter "resistivity of loop material". I think its measured with an ohm meter.
On that web page, he tells how to troubleshoot your loop using this program.
Here's the results I got:
LOOP TYPE (CIRCLE or SQUARE): circle
LOOP CIRCUMFERENCE(METERS): 3.14159
CONDUCTOR DIAMETER(METERS): .022225
NUMBER OF LOOP CONDUCTORS: 4
RESISTIVITY OF LOOP MATERIAL (OHM-METER): .000000037
RELATIVE PERMEABILITY OF LOOP MATERIAL: .999994
LOOP COEFFICIENT OF COUPLING (K>=1/N,K<=1): .4
TRANSMITTER POWER (WATTS): 20
LOW FREQUENCY LIMIT (MHz): 6.925
HIGH FREQUENCY LIMIT (MHz): 6.95
FREQUENCY STEP (MHz): 1
Frequency: 6.925 MHz Rr: 0.0219 ohm
Rhf2: 0.0540 ohm Efficiency: 0.2882
L: 1.5260 uH Xl: 66.3983 ohm C: 346.2 pF
Z: 0.2753 ohm Q: 438.1103
Bandwidth: 15.8066 KHz. 2:1 SWR Bandwidth: 5.3953 KHz
Dynamic Resistance: 29089.78 Ohm. Potential across the Capacitor: 762.76 Volt
Pickup loop area: 0.0306 square meters
110
Equipment / Re: The mag loop project is complete (photos)
« on: March 13, 2016, 0352 UTC »
Dang, New Brunswick is pretty far from your region.
With the 4 loop configuration, what were you doing to change the SWR?
With the 4 loop configuration, what were you doing to change the SWR?
111
Equipment / Re: The mag loop project is complete (photos)
« on: March 08, 2016, 0329 UTC »
Wow, you added 2 more loops! Looks like it was a lot of work. Congratulations on finishing the thing!
112
Huh? / Man Found Mummified in Yacht
« on: February 29, 2016, 2038 UTC »
I wonder if he was listening to pirates when he died?
http://nypost.com/2016/02/29/mummified-sailor-found-on-abandoned-yacht/
http://nypost.com/2016/02/29/mummified-sailor-found-on-abandoned-yacht/
113
North American Shortwave Pirate / Re: XLR8???
« on: February 27, 2016, 0212 UTC »
Hi Julio, welcome to the forum. XLR8 usually IDs itself. Listen for a breathy sounding voice. Thats great you hear it in Guatemala! I'm in California and its one of the stronger stations East of me.
This forum is the report posting forum where there's a thread title template to use, there's instructions for it on a sticky post at the top of this forum.
This forum is the report posting forum where there's a thread title template to use, there's instructions for it on a sticky post at the top of this forum.
114
Equipment / Re: Photos of the mag loop project - need some wiring advice
« on: February 12, 2016, 0517 UTC »
Jackson r, thanks for the update, I was wondering how things were going. I'm not an expert, but I did read this great webpage by a guy who is one! On his link, there are close up pics of how he connected the capacitor to the loops.
http://gridtoys.com/glen/loop/loop3.html
I would call your loop a dual loop. It has 2 separate pieces of copper pipe that each make their own loop. And I would not call it a 2-turn loop. 2-turn loops use one piece of pipe that has been shaped like a coil to have 2 turns. (somebody correct me if I'm wrong)
The antenna on the webpage has 4 loops (does it make you drool too?). The more loops you have, the more efficient it is but with diminishing return.
It looks like you got most of the hard work done, good for you. Was it hard to bend the pipe?
P.S.
To camouflage such a crazy thing, you could put it inside a pop-up tent.
And don't get close to it when transmitting so you avoid radiation. There's lots of pics on the web of people right next to the things as they transmit with them.
And don't touch it because it has high voltage that can keel you!
http://gridtoys.com/glen/loop/loop3.html
I would call your loop a dual loop. It has 2 separate pieces of copper pipe that each make their own loop. And I would not call it a 2-turn loop. 2-turn loops use one piece of pipe that has been shaped like a coil to have 2 turns. (somebody correct me if I'm wrong)
The antenna on the webpage has 4 loops (does it make you drool too?). The more loops you have, the more efficient it is but with diminishing return.
It looks like you got most of the hard work done, good for you. Was it hard to bend the pipe?
P.S.
To camouflage such a crazy thing, you could put it inside a pop-up tent.
And don't get close to it when transmitting so you avoid radiation. There's lots of pics on the web of people right next to the things as they transmit with them.
And don't touch it because it has high voltage that can keel you!
115
North American Shortwave Pirate / Re: UNID 6955 USB 0248z 07-Jan-2016
« on: February 07, 2016, 0325 UTC »
I received an SSTV here in CALifornia.
116
North American Shortwave Pirate / Re: UNID 6925.6 AM 0246 UTC 2/7/16
« on: February 07, 2016, 0250 UTC »
Weak carrier in CA a little weaker than the Liquid Radio carrier
117
North American Shortwave Pirate / Re: Moonlight Radio 6940 LSB at 0005 UTC, 2/6/16
« on: February 06, 2016, 0116 UTC »
0116utc, Very weak audio, I can tell its music. Sun is still up in Ca.
Coming in a little better now,
0121utc, Kind of the Road
Coming in a little better now,
0121utc, Kind of the Road
118
Equipment / Magnetic Loop Antenna Links
« on: January 30, 2016, 1918 UTC »
I plan to update this with more links as I find them.
There are lots of cool websites with info on magnetic loops for transmitting:
1. This guy is Australian and has a big loop, he says it works great on 160m:
http://www.brisdance.com/vk4amz/LOOP.html
2. Here's a handy calculator:
http://www.66pacific.com/calculators/small_tx_loop_calc.aspx
3. And another loop website to help out with many ways of feeding it:
http://www.nonstopsystems.com/radio/frank_radio_antenna_magloop.htm#construction-Mk-2
4. Here's a .PDF paper to get you jazzed that Chris shared earlier.
http://www.brisdance.com/vk4amz/files/Download/UnderMagLoop.pdf
5. This one is made out of PEX aluminum water pipe and has an easy capacitor!
http://draaggolf.blogspot.com/2014/04/finally-pexalpex-loop.html
6. And this one has parallel loops that make it more efficient!
http://gridtoys.com/glen/loop/loop3.html
There are lots of cool websites with info on magnetic loops for transmitting:
1. This guy is Australian and has a big loop, he says it works great on 160m:
http://www.brisdance.com/vk4amz/LOOP.html
2. Here's a handy calculator:
http://www.66pacific.com/calculators/small_tx_loop_calc.aspx
3. And another loop website to help out with many ways of feeding it:
http://www.nonstopsystems.com/radio/frank_radio_antenna_magloop.htm#construction-Mk-2
4. Here's a .PDF paper to get you jazzed that Chris shared earlier.
http://www.brisdance.com/vk4amz/files/Download/UnderMagLoop.pdf
5. This one is made out of PEX aluminum water pipe and has an easy capacitor!
http://draaggolf.blogspot.com/2014/04/finally-pexalpex-loop.html
6. And this one has parallel loops that make it more efficient!
http://gridtoys.com/glen/loop/loop3.html
119
North American Shortwave Pirate / Re: Radio GaGa 6930 USB 2348 UTC Jan 29, 2016
« on: January 30, 2016, 0157 UTC »
I heard 2 IDs! The Doors played. The sun was still pretty high here, glad I caught GaGa! The reception was getting fair but it went of the air.
120
North American Shortwave Pirate / unid 6925am, 0340utc, Jan 29, 2016
« on: January 29, 2016, 0341 UTC »
0340utc, there's a carrier I can hear. I wishes I could get it with music. Maybe somebody else has it?
