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Messages - syfr

Pages: [1] 2 3 ... 23
1
22 Meter Band Beacons / Re: BNC1
« on: March 23, 2019, 1243 UTC »
Now hrd   on 13,555.4

2
22 Meter Band Beacons / Re: GNK 13564 1845 UTC 7 Oct 2018
« on: December 30, 2018, 1323 UTC »
GNK is *the* band marker!


3
22 Meter Band Beacons / Re: BNC1
« on: December 23, 2018, 2336 UTC »
Hrd today .  Had a 20/S9 carrier that was puzzling till I turned off my Metcal soldering iron  ;D

4
22 Meter Band Beacons / BNC1
« on: December 16, 2018, 2010 UTC »
Hrd on 12.562.7   CW @ 10 WPM or so

5
Decent copy here in Mid Atlantic... weak audio but better than yesterday. Good jazzy music, that's fun to listen to in nice AM.

Signal coming up as we approach later afternoon

6
22 Meter Band Beacons / Re: GNK 13564 1845 UTC 7 Oct 2018
« on: December 10, 2018, 2007 UTC »
GNK good on east coast @1830z

7
Shortwave Pirate / Re: UNID 6925 AM 2140 UTC 09 Dec 2018
« on: December 09, 2018, 2156 UTC »
Vy nice AM signals .   Jazz instrumentals.   Listening live and it sounds really good.

Know nothing about jazz other than it has sax and pianos :-)   There seems to be some voice ID but it's super low compared to the music audio

off at 2200

8
HF Beacons / Re: 4 MHz Western USA Beacons
« on: November 22, 2018, 1524 UTC »
Chris, what time have you heard these? I've been out in Calif and heard them clearly but never from the Right Coast.

9
HF Beacons / Re: 8 MHz Western USA Beacons
« on: September 04, 2018, 1937 UTC »
Likewise...appreciate the post

10
Thanks for the update zazzle. I think your analysis is correct. I would certainly agree with not broadcasting the location.  A mo e of lovation seems wise also. Thank you for maintaining this weekend . It's really only chance we in the US to Log a European beacon.

 Also super interesting to read off your photojournalism documenting both your beacons construction and placement . Please keep up the good work

11
For Sale / Wanted / Re: T-368
« on: June 29, 2018, 0153 UTC »
Great rigs!!!

12
Quote from: digitalmod link=topic=40022.msg148374#msg148374 date= was....Its1516834535
:D  It would appear some one just is not reading the engineering papers. Class E RF amp was developed at 13 MHz for 200 watts, in 1997 ! Authors use IRF 440 in push pull.
QEX article states class E better above 3 MHz, D below. Also the QEX article states Class E FETS have produced 100 KW transmitters , obviously in tandem in 2001 !
So clearly today in 2018, to ask 200 watts at shortwave a piece of cake,

Ref:
http://www.its.caltech.edu/~mmic/reshpubindex/papers/RFdesign.pdf :-X

QEX is a ham rag.... (Its been years since I've seen it). Hams have been using class e for a good while.

Water is a great and cheap way to sink heat.

13
The RF Workbench / Re: A newbie question about a transmitter
« on: June 29, 2018, 0025 UTC »
"While they're great little transmitters, the parts, especially the style of transformers he rewound for the mod trannies, are getting as hard to find as hen's teeth. As much as I'm a Grenade man and think the world of it's inventor, stick with something you can easily get parts for and build."

Can you point me to the rewind instructions for what I'm guessing it's the old radio shack transformer? I have one of those and while I'm away from the shack if really like to know how to rewind it.

Having said that Stretchy s toroidal design early makes nice audio too

14
The RF Workbench / Re: Crystal question
« on: June 27, 2018, 1611 UTC »
Typical protection scheme of the day was a miniature bulb in series with the crystal.

15
I enjoyed list e ring to the 30m signal. Hope you get the time to get it running but I sure know how life gets in the way of hobbies.

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