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Thanks Steve. I did try fudging the transmitter and got them to sync but it went too far. Had great base on LSB but on USB I was accused of having shorts that were too tight. ;-). I think need to

Jim do you have +5 volts on the VCC pins of the ICs? Sure sounds like you’re not getting power to the board.VCC, as you might well know, lives on pins 14 and or 16 of MOST ICs. Service manual will

This is one of the reasons why I don’t care to work on the R4C. I know space was a premium, but damn, getting to the bottom of most of those boards even to make voltage checks is a PITA! mike wb8vge

Evan & Group, Here are some photos of the R4C s/n and PCB. Had an issue with a flaky S-meter adjustment and saw missing foil traces near R-55 (blue 2-legged pot). My clumsy hands knocked off whatever

Jay, You might want to id which of the three production runs/models you have in case this board is one of the "variables". 73, Evan, K9SQG

Group, Thanks for the suggestions. Did a little cleanup on the PTO shaft and gears (I thought the technician resolved this) and tuning is more smooth. 73 Jay W6CJ

This is good to know...thanks Bill. Thanks, Robin Midgett K4IDC [email protected]> wrote:

Looking for a PC board foil diagram that shows the connections to, and around the R55 bias pot. Thanks & 73 Jay W6CJ

I don't post much but I do read all the messages but now I need help. The DR7 board in my Drake TR7 has no digital display at all, no periods or digits, just black. I have checked the 5 volt

This digital readout unit is designed to work with Drake Transmitters and Receivers. It requires an external 12VDC supply and connects to the Injection circuit on either the transmitter or receiver

Victor Yes mark as shipped add the tracking # from PirateShip label that's it . Ebay sends your final value (less 13.5% ugh) and the shipping cost collected from the buyer, probably less the

Joseph - I am interested in trying this, but how do you “ship” the sold item as far as eBay is concerned? Do you just select “mark as shipped”? (I am concerned that ebay records that the item

This package SOLD this morning. - Alan K9MBQ

Tony, there is a chance that either the CO crystal in either the TX or RX has drifted or that one of the passband filters in the tx has drifted. I have a set of B Twins that suffered the same problem

They get brittle with age and heat. You can break an aged one by just pulling the lamp out. "John K5MO via groups.io" <johnk5mo@...> wrote: -- 73 -Jim NU0C

Drakers, I am sure that this has been discussed before, however please bear with me. I? have recently noticed that I can hear the audio from my microphone in the speaker when in receive mode.? ?The

Would be nice to see mentors instead of Elmers too

Off-topic? It would be GREAT to see a vintage radio restorer/repair shop in SOCAL! 73 de W6CJ verizon.net_at_groups.io_lastradioman@...> wrote:

Hi Gang, I have a problem using C61 to net the R4B to the T4XB. The T4XB is perfectly centered in the filter passband according to the alignment instructions in the manual but it doesn’t quite make

Hello all, I am posting this want ad for my Elmer and employer, Kevin, WA6HUL. Thanks, Lyman Lew KK6LPW *WANTED: Radio Repair Technician* Radio repair technician, tube era ham equipment and vintage