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Re: LF: DFCW test results

To: [email protected]
Subject: Re: LF: DFCW test results
From: Markus Vester <[email protected]>
Date: Wed, 5 Dec 2018 16:34:22 +0000 (UTC)
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This is what I captured overnight, with strips showing 20 UT (top left) to 2 UT (bottom right), and RDF colours swapped from blue to green for better visibility. The night wasn't too great here, with some local background noise from frosty railway lines.

Best 73,
Markus (DF6NM)

-----Ursprüngliche Mitteilung-----
Von: N1BUG <[email protected]>
An: [email protected] <[email protected]>; [email protected] <[email protected]>; Discussion of the Lowfer (US, European, & UK) and MedFer bands <[email protected]>
Verschickt: Mi, 5. Dez 2018 16:58
Betreff: LF: DFCW test results

Thanks to all who ran grabbers and sent screen shots during last
night's test. This was an experiment to see how the little amplifier
would hold up at 200+ watts output under higher duty cycle and to
see whether my CW ID would be visible on grabbers.

The amplifier did fine. Efficiency was down a little this morning
because a big drop in temperature overnight drastically lowered the
antenna system resistance. I didn't bother going outside to change
taps on the transformer.

I did not see any evidence of the CW ID even on grabbers where my
signal was quite strong. Next time I run this test I will reduce the
speed of the ID to see what happens.

I am behind on email. I need to get a little sleep now so I will
remain behind a bit longer. :)

When I wake up I plan to make a few changes to the transmit
converter. If successful, I hope to be QRV for JT9-1 and JT9-2 QSOs
for the next few nights. No promises yet. If not successful the
worst result could be a ded FET and a fuse. That's about $1.50 cost
plus 20 minutes to repair, so I'm not worried about it... ;-)

73,
Paul N1BUG

Attachment: TA_n1bug_181204-05_20-02ut_green.jpg
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