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Messages - Antennae

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571
North American Shortwave Pirate / Re: CoolAM via RTN relay 6935v AM 0100 13-Jan-14
« on: January 13, 2014, 0127 UTC »
0122 UTC
Can't alway get what you want

The noise is too high now. Sun just went down so hopefully it will improve.

SINPO, ant. B
35232


572
North American Shortwave Pirate / Re: Frederic Chopin Radio 6940 AM 23:17 01/12/14
« on: January 13, 2014, 0050 UTC »
I wish I heard this one.

573
North American Shortwave Pirate / Re: KBOX 6950.7 AM 0030 13-Jan-14
« on: January 13, 2014, 0049 UTC »
0038
I heard a female voice a little over the noise.  The sun is still up in these parts. 

574
North American Shortwave Pirate / Re: UNID 6955.5 USB 2138 UTC 12 Jan 2014
« on: January 12, 2014, 2141 UTC »
2141
Nothing in my neck of the woods.

575
The RF Workbench / Re: Can one use a CW transmitter to transmit voice? *edit, added link
« on: January 12, 2014, 1915 UTC »
Thanks ff, are you sure it was the flu? Maybe the fflulu?  (Just a corny joke.)
So first off I would guess that LULU uses high level modulation because the "mod tranny" is so big and beefy.
*a period of percolation...
 I'm getting it, I had to use my brain.  So the first section makes the oscillations for the transmitting frequency and transmits it. But it needs some audio.  The second section gets the audio, amplifies it and then modulates it.  This goes into the first section to get transmitted.  

Toroid winding: It looks scary.  But recently, after learning that men invented knitting (men can knit too), and seeing knitting projects take months to finish, I think this wouldn't be nearly as difficult. I think we were made to do menial repetitive tasks (grooming, weaving, knitting, ...) Some months ago I used knitting to calm myself down after a hard day's work.  Its very therapeutic.  So toroid winding probably falls in that category.  

I've seen a wound toroid thing here in this speaker system. Its big and has lots of windings. Scroll 2/5ths downs the page to see it.
http://forums.logitech.com/t5/Speakers/Logitech-Z-2300-The-Last-of-the-Titans-Review/td-p/500830

Can anybody recommend a good transmitter book for beginners?

Edit: I'll look into the ARRL handbook that redhat recommends.

576
North American Shortwave Pirate / Re: UNID 6925 USB 0332 UTC 12 Jan 2014
« on: January 12, 2014, 0409 UTC »
0410
Nuthing here.

0423
I just started hearing some stuff that is no doubt music.  Weak stuff.

577
North American Shortwave Pirate / Re: Radio Free Whatever 6924.5 AM 1703 UTC 11 Jan 2014
« on: January 11, 2014, 1800 UTC »
Nothing over here.  :o

578
The RF Workbench / Re: Can one use a CW transmitter to transmit voice? *edit, added link
« on: January 11, 2014, 0156 UTC »
So you have a supplier for the good stuff at the hamfest you frequent? Thats fun, I've never been to one, they sound cool.

 I did a 16 foot experiment with my FM-10 today. The antenna is a vertical dipole hooked right into the antenna jack. Length is cut to the transmitting frequency.
5' off ground = .1 mi rough at .3
12' off ground = .3 - .4mi
16' off ground = .6 mi

With my trusty portable in the right spot I got it. The hills around here make the radius inconsistent depending on the direction.   

PS: I realized the audio sucks because I wired the headphone jack wrong! Only one channel was working correctly.  Now to be scientific I need to rewire it and test again...


579
The RF Workbench / Re: Can one use a CW transmitter to transmit voice? *edit, added link
« on: January 10, 2014, 2028 UTC »
Cool, 7 watts. I bet the transistor had a heat sink on it?  I'll read up on the Mighty Mite. 

There's a Ramsey QAMP 20 kit that gives 20w with scary reviews on eham.net. 

580
The RF Workbench / Re: Reference Books (and sites) for Pirate Engineers
« on: January 10, 2014, 1906 UTC »
His DIY capacitor is handy:
http://www.sm0vpo.com/begin/gimmik-0.htm

And so is his McGuyver fridge:
http://www.sm0vpo.com/booze/mcguyver_refrigerator.htm

581
The RF Workbench / Re: Can one use a CW transmitter to transmit voice? *edit, added link
« on: January 10, 2014, 1849 UTC »
cmradio: 
Yeah, I don't want to let any magic smoke out thats not supposed to be letting out.  But it seems like a worthy notch to put in your belt as one of life's accomplishments.  I'm looking at transistor things because the tubey things would suck up battery power.

Pigmeat:
-Thats a cool concept to plug it right into the key socket. 
-The Big Talker... I found the Big Talker and its cool that you can change the power output settings. Part-15... I was fiddling around with an old Ramsey FM-10 transmitter (Part-15) for a whole day and it didn't go far enough to sate my thirst. So the Part-15 leaves a bad taste in my mouth. It only made me want more. Its audio suuuuuuuucked too.
-I'm cheap too.  The affordable mobile things I can find are too weak and CW.  Or too expensive (mobile transceivers).

Come to think about it, I invested all that time in the FM-10 that I should go hang it in a tree and give it one last try. 

582
The RF Workbench / Re: Can one use a CW transmitter to transmit voice? *edit, added link
« on: January 10, 2014, 0446 UTC »
Thanks redhat. I don't know much about electronics so I had to let your response percolate. So I think I understood your part about the class C amplification. But the rest was Latin.
Then I looked up what kind of modulation methods there are. So I learned you can modulate a signal in the low power domain and then amplify it for transmission .  Or it gets modulated in the high power domain of the transmitted signal. (wikipedia)  And I figure this is what you are talking about with the commando and corsair. 

I just found this website about adding modulation to a Pixie 2 transmitter. After that its called a Talking Pixie 2.   8)
http://www.indianapolis.net/QRPp-I/talking_pixie2.htm
I don't think the makeRF's "amplifier/modulator" would work with the Pixie 2 because makeRF's is both a modulator and amplifier.

Conclusion:
Cool. So it is possible but you say most are setup for class C amplification. I learned that class C is more efficient and it makes sense to use that class for CW with such little power. 

583
The RF Workbench / Can one use a CW transmitter to transmit voice? *edit, added link
« on: January 09, 2014, 1855 UTC »
I was looking at the schematic on makeRF's website.

http://makerf.com/posts/so_you_want_to_be_a_shortwave_pirate

The modulator/amplifier taps right into the Michigan Mighty Mite transmitter.  Can one take the modulator/amplifier from this and tap into any CW transmitter (hopefully one with more power)?

584
North American Shortwave Pirate / Radio Totse 6925 USB 0420 UTC Jan. 9, 2014
« on: January 09, 2014, 0430 UTC »
SINPO Ant. B
15222

0420 Some dictionary examples on how to use the versatile word "fuck." With encouragement to use it more often.
0425ish The Roof is on Fire, "Watch the motherfucker burn."

0433 ID?
Sinpo
15211 Reception is just above the noise now with long fades.

585
North American Shortwave Pirate / Re: Undercover Radio 13960 USB was 21460 AM 1633 UTC 5 Jan 2013
« on: January 05, 2014, 1749 UTC »
1746 UTC
Nothing but buzzing noise here with antenna B.

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