Nice install Carl. Theres a good place for the speaker behind the dash if your interested. some more info, and my pics here... http://www.radioreference.com/forums/showthread.php?t=70888&highlight=motorola+speaker+sierra http://www.radioreference.com/forums/attachment.php?attachmentid=9228&s...

THANKS kb0nly!!!!!!!!!!!!!!!!!!!! Tying HUB to ground on the mic was the trick, and now PTT works!!!!!!!!!! The Mic Lo is just ground. I know some may argue, but it works fine. Here is what i have done with converting other mics to work with my X9000's, which are wired the same as your Spectra. The...

I get mic audio ok, but the PTT stays in transmit. There must be something different about the Radius mics circuitry. Also the Spectra's have a MIC LO and the Radius mics do not. If anyone got this to work, please post your wiring/ pinouts, THANKS A BUNCH!!!!!!!!!!!!!!!

Hi, Spectra guru's, wondering if anyone has had trouble with this. I am a little tired of the bulky Spectra mic and wanted a more modern Maxtrac/Radius mic. Matching signals (red, blue, grn, wht wires), causes the PTT to stay in transmit. Any help appreciated. thanks!

No, its a dash mount. Front panel power switch works, even without ignition wire connected. Rear J2 has ignition sense "on" all the time. I would like my key to turn off the radio when I leave the truck. From the sounds of Mikes post, its on the bottom so I have to remove the board, and tr...

Thanks guys! Yes, the power switch still works. Its just that J2 pin 5 has B+ stuck "on" always.

thanks Mike!!!!!!!!

Hi Spectra experts, one more question, does anyone have a part# for the flourescent 8 digit display tube for and A7?. Trying to make mine bright and new again. thanks for your help!!

Hi Folks, I am trying to get the ignition sense to work on the rear J2 DB15 connector on an A7. Its stuck on with+12v. I read that there is a jumper on the command board. Do anyone know where this jumper is? thanks!!

Any of you MCS experts had success with these DEK PLUS boxes? Are there any version/firmware limitations?
I have the correct MCS DEK PLUS cable, but still doesn't work, although buttons are programmed in RSS. Anyone have a service manual part#? thanks in advance.