Herewith, a retraction of my statement about the K8CC Voice Blaster
Interface schematic. Dumb software guys, you know. It turns out the
1:1 isolation transformer is very much orientable, and I oriented it
backwards. Once I put it in with the primary connected to the sound
blaster speaker output, everything started working...sort of. The
2200 ohm resister Dave specified in series with the Sound Blaster
speaker output is a little too weak for me to use along with my Heil
DX microphone element. Using it this way is sure to bring the old
DXers out of the woodwork, screaming "You're splattering!" Closer to
about 5K seems to match the Heil up with the Blaster a little better.
I'm going to go to a 5K pot on instead of the 2200 fixed resister.
Also, I've got a miserable problem with hum I've got to figure how
to clear up. I guess a first order effort will be to use shielded wire
everywhere there's an audio signal, both inside and outside my box.
After that???
My unit is now asserting both pin 4 and pin 20 on the COM port when
playing back, so there must have been a loose connection somewhere
earlier. In other words, everything working OK except for all the hum.
As I said...software types!!!
Bruce, AA6KX
>From jeffrey (j.) wittich" <jwittich@bnr.ca Mon Oct 10 13:12:00 1994
From: jeffrey (j.) wittich" <jwittich@bnr.ca (jeffrey (j.) wittich)
Subject: Question about CQWW DX results
Message-ID: <"5981 Mon Oct 10 08:16:16 1994"@bnr.ca>
Hi guys. Here I am, looking at the CW results of the CQWW DX
test, and I am confused (nothing out of the ordinary).
In the October issue of CQ on page 27, middle column, call
district 4, low power listings, the 4th score (station W4YN)
doesn't seem correct. With only one third the number of Qs,
zones, countries of the next couple of entries, how did he get
so many points?
Here is a short excerp of the listing, for those without the
magazine handy:
K4FPF A 438,372 483 79 245
KC4TEO A 292,098 412 77 190
K4OAQ A 282,846 370 75 207
W4YN A 274,541 110 28 80 <<< why so many points?
N8LM/4 A 236,808 329 76 188
W4KY A 229,376 330 74 182
AC4ZO A 172,656 298 62 156
N6MW/4 A 115,413 200 68 151
KA4IKH A 45,628 149 39 83
W4ZYT A 35,938 116 42 77
AA4KD A 30,590 109 44 71
AC4ZD A 23,226 90 34 64
AC4PQ A 13,536 70 23 49
Any ideas?
Thanks, 73,
Jeff
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jwittich@b4pph107.bnr.ca *** CW ops let their fingers do the talking.
AC4ZO *** BNR claims they know nothing of my employment here.
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