Re: Drake T4XC and D-104 wiring
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It would be helpful to remove the three screws from the bottom plate of the D104 and attach an image of the wiring and to determine if you have an amplified base. ?One goal is to isolate the audio ground shield conductor from a dedicated PTT ground turn lead in the mic base.? The two conductors will then bond to chassis ground at the TR-4C¡¯s mic jack.? Reason:? by forcing the PTT return current on its own conductor separate and apart from the grounded mic shield, clicks and pops are minimized when activating the D104¡¯s PTT arm.? All but Astatic¡¯s ¡°G¡± only base have enough conductors and based on your description below you have a D104 base with enough conductors to make this work.??? ? Paul, W9AC?
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On Fri, Feb 23, 2024 at 10:20, Bill Losef via groups.io < w.losefsky@...> wrote: I have a Drake T4XC and trying to figure out the D-104 wiring onto the Drake plug. Lots of stuff on the net and much of it conflicting. Here is the color code of wires coming off the D-104 ?Can someone share what color wires go to the Drake Mic plug connector? On Friday, February 23, 2024 at 09:24:56 AM EST, Mark KF0KZP <fleischtpnl@...> wrote: Thanks Gary! That makes me feel much better.? Will try it and let you know the?outcome.? Really appreciate the help! ? Mark,
Forget the new radio and just look at the TR-4.
Use the calibrator and adjust the dial so? the calibrator is zero beat and the dial reads 21.300.
Now, you are receiving exactly on 21.300.? In USB and LSB your are transmitting on exactly 21.300.
If you now go to CW or AM, the carrier is offset from 14.300 by probably the 895Hz so you are transmitting on 21.300.895.
This is done for the dual purpose that the carrier needs to go through the crystal filter and for CW you need to tune off off zero beat to hear received signals.
Your TR-4 is normal.
73,
Gary
WB6OGD ?
-- Mark "Fleisch" Fleischer KF?KZP 
Public Address Announcer/Voice Over/Production Specialist:?
,?,?, ,?,?,?(Superior), and?(Proctor)
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Paul Christensen