Garey, Of course, you are correct. I was thinking of the PTT for SSB. Sorry for misleading you, Frank.
Ken, WA2LBI On Mon, Mar 22, 2010 at 10:13, Garey Barrell <[email protected]> wrote: > Ken - > > Re-read that page...... The Carrier Balance is adjusted in CW MODE, BUT > with PTT closed instead of the KEY so the SIDETONE is NOT generated. > > This puts the Carrier Oscillator within the LSB passband so as to have a > larger output to null. > > > 73, Garey - K4OAH > Glen Allen, VA > > Drake 2-B, 4-B, C-Line& TR-4/C Service Supplement CDs > <www.k4oah.com> > > > Ken Winterling wrote: > >> Frank, >> >> The carrier balance adjustment is made in SSB, not CW. See page 15 of >> the T-4XB manual under "CARRIER BALANCE ADJUSTMENT". >> >> Ken, WA2LBI >> >> >> On Mon, Mar 22, 2010 at 09:42, iz oos <[email protected] <mailto: >> [email protected]>> wrote: >> >> Hi! >> >> I did my homework! Indeed, the carrier oscillator crystal frequency >> was not exactly set to 5.645 MHz, mainly due to C2 which was offest by >> 30 degree and a bit also to T14 which was not completely peaked. >> Switching sideband switch back and forth it was easy to note >> difference in plate current and Adjust C-2 to make the current and >> output of the sidebands equal. Current was about 0.8 and output zero >> or close to zero. >> >> >> Plugging the mike, both sidebands now sound much more the same, >> however I had still to rebalance the carrier balance control which was >> set fully counter clockwise. Setting the function switch to CW and and >> PTT on mic ON the relative output meter stays at zero for whatever >> adjustment of the carrier balance control !!!! So, I CAN'T rebalance >> the Carrier Balance control !!!! >> >> Why is that??? >> >> 73, >> >> Frank IZ2OOS >> >> >> >> >> 2010/3/21 Garey Barrell <[email protected] >> <mailto:[email protected]>>: >> >> > Frank - >> > >> > Start with the Carrier Oscillator, Filter Match & Balanced Modulator >> > alignment in Section VII, Section B. The idea is to get the Carrier >> > Oscillator "centered" in the valley between the two filters as >> shown at "0" >> > on Page 37. >> > >> > 73, Garey - K4OAH >> > Glen Allen, VA >> > >> >> >> > _______________________________________________ > Drakelist mailing list > [email protected] > http://mailman.zerobeat.net/mailman/listinfo/drakelist >
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