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Okay, fault repaired. I suppose at least some people are aware that Magnum/Dragon added the reset/frequency-range-options-jumper-board later in the Deltaforce's production life. As they made no changes to the printed circuit, I guess they just told the factory techs to solder the necessary...

I checked all the knobs and none pull out but I have confirmed what I suspected. Lightly touching the wire loom inside the radio at the back of front panel caused the normal LCD info to be displayed. I'll have to take the front panel off to expose the wiring to the MCU board to see if I can find...

Thanks all. Neither worked and I have tried both together and singularly turning the radio off and on. Tried a few other buttons in the off state and turning on but nothing makes a difference. It's just a regular Deltaforce front panel with CW at the full clockwise position on the selector...

Hi, My Deltaforce has CW mode not PA mode on the selector switch, so there should be no PA mode at all. However, when I just powered it on the LCD immediately showed "PA". I have pressed and held the reset button on the small frequency range selection board for more than 10 seconds but, when...

Hi, Would anyone have a copy or know of a link to a copy of the service manual for the Cobra UK 29 LTD ST please? I found the WWDX post below in which user "Sonoma" provides the link below to a copy but this no longer works...

Hi ButtFuzz, I followed a link you posted to your website with advice on two options for a enabling the clarifier on PTBM121D4X radios to adjust the outing TX frequency. However, the link no longer appears to work (sommerkamp_tristar_747_clarifier_unlock.pdf) . Could you let me know if you have...