Thanks John,
I was thinking that, but I could'nt understand why. I'll give it another go at
140-150w and see.
73's
David, wd9cmd
----- Original Message -----
From: John Stringer
To: David & Chris Drake ; drakelist@zerobeat.net
Sent: Monday, February 09, 2009 5:28 AM
Subject: RE: [Drakelist] TR-7 Alignment
Hello David. I had the same problem when I attempted to set 80M output at a
much lower level.In the end I went back to 140W on 80M and this gives me 100W
at 29.5 with the ALC light extinguishing. John. GI3KDR
-----Original Message-----
From: drakelist-boun...@zerobeat.net
[mailto:drakelist-boun...@zerobeat.net]on Behalf Of David & Chris Drake
Sent: 08 February 2009 21:13
To: drakelist@zerobeat.net
Subject: [Drakelist] TR-7 Alignment
Hello,
I decided to go back into my TR-7 this afternoon and do some tweeking to my
previous alignment. (the S meter seemed to read higher than my other radios by
quite a bit). After re-setting the S-meter per the manual, I thought I'd go
back over the transmitter settings and lower the output somewhat. I had read
somewhere that Drake liked to set the ALC board at 120w instead of the called
for 140-150w. The purpose being purity of emissions. I'm using it mainly with
an L4B, so the extra 20-30 watts means little.
Per the manual, I set the carrier fully clockwise on 14mhz, keyed the radio
and set the ALC pot to about 120w. Then went to 28mhz and attempted to reset
the predriver board to get the alc light to go out. No can do. The pot is
fully CCW and no more there. I remember when I did the previous alignment set
at about 145w on 14mhz, and then on 28mhz, the alc light just started to dim at
fully CCW on the predriver.
Any comments as to what I should or should not be doing? PS, its sn 5300
or so with the version 2 predriver.
Thanks,
David
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