Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang
----------------------------------------------------------------------
DW -
Best test is the TUNE mode. In TUNE, the mic amp is converted to a
single tone oscillator. The transmitter should bump into the ALC by
about 11-12 o'clock on the GAIN control, and probably about 120 - 130W
out on the low bands. IF you have a scope, look at the output from the
transmitter and see if it is a clean sinusoid. If it 'looks' bad, it's
_really_ bad, but if it looks good, it's about as good as you can tell
without more extensive test equipment.
Depending upon your voice characteristics, the meter may not kick up
much on voice. A peak reading wattmeter or a scope would give you a
better handle on the PEAK power output.
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 4-B & C-Line Service Supplement CDs
<www.k4oah.com>
DW Harms wrote:
Drakelist de PA2DW,
Last weekend I worked on the SSB quality of my T4XC. I am 90% CW
operator so I never bothered much about the SSB, but it does have a
problem.
Best discribed it looks as though the bias setting is not proper. It
sounds distorted and "non-linear" and when whistling I have my full
output of 160W RF, but when talking normally into my Shure 444 the
meter hardly leaves the left corner.
I checked the bias of course, which is fine. I also checked the
mic-amp and that looks fine too. Replaced the 12ax7's by ECC83, no change.
I will proceed of course and my next target is the driver bas, but
would not mind tips and advises!
Best regards, Dick PA2DW
*_Dick Harms_*
*<**(** **0715131735** **<**(** **GSM:
0653763631**<[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>*
**
----------------------------------------------------------------------
Submissions: [EMAIL PROTECTED]
Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body
Hopelessly Lost: [EMAIL PROTECTED] - help in body of message
Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net
----------------------------------------------------------------------
