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Messages - Antennae

Pages: 1 2 3 4 5 6 7 [8] 9 10 11 12 13 14 15 16 ... 44
106
0310utc Some music above the noise floor. Signal slowly fades up at the moment. Percussive sounds.  Thanks XLR8.

107
I hear old timey music on 6925usb, nice and clear. Low noise level. A pirate station on my side of the Mississippi is a rare thing. Thanks for the show, Zed!

108
Above the noise level here on my 80m vertical loop. At the noise level on my random wire with antenna tuner.  Listening on my portable because its easier than firing up the 'ol SDR and the unholy Windows computer.

109
0245utc, Louis Armstrong heard. S6 signal with an S5 noise floor. Sounded ok. I hope they play again sometime.

110
Shortwave Broadcast / 8812 USB, 0154utc, March 29, 2016
« on: March 29, 2016, 1405 UTC »
This is in USB mode. I hear some Asian language at 0154utc. There's a guy and a gal, and some news show sound effects. Then there was music, woman talk, and it went off at 0200utc. 

111
0204utc, fadey carrier in California. 'Tis a pirate in new waters.

112
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. 

113
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.

114
Equipment / Re: The mag loop project is complete (photos)
« on: March 13, 2016, 1343 UTC »
You're up early this morning :D
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

115
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?   

116
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!

117
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/

118
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.

119
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! 

120
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.

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