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Anyone have any info on the Roadking RK40? Not the RK5640 (blue lights, discontinued), but the RK40 that looks like a Uniden PC78? Looking for adjustment/alignment information. Thanks!

I have a Cobra 29 LTD Classic, and I am experiencing an issue that I've never came across. I need a little help, pointing me in the right direction to correctly repair the radio if possible. Everything on the radio works well except for a noticeable delay between when the radio will actually...

Anyone have any mod info to share on the 505XL? Thanks!

I'd like to install a TopGun MD-1 on my Connex CX33HPC-1 radio. I can't find a lot of information on the EPTDX2912Z board though. It seems even finding a legible schematic for the board is a little difficult. Why does it always seem like it's me that ends up with some off the wall something...

I've been having a time trying to get my Connex CX33HPC-1 dialed in on my newly purchased oscilloscope. I don't have a proper signal generator, so I've been using a signal generator app on my smartphone at 1000hz, and sometimes a whistle or "auddiiioooo" into the microphone, and adjusting the...

I've never owned a 'scope until now, and I'd like to use it to help with alignments and audio adjustments on my personal equipment. I am a big stickler for clean audio, so I felt it was time to invest in a piece of equipment that I could use to help me achieve that. As I've never owned a...

Anyone have alignment instructions for the CX33HPC1? Please - and thank you. :)

From what I seem to remember, the TS potentiometers were a weak-link with these amplifiers. Is there an upgrade part out there that would be better suited? As the potentiometer is merely a variable resistor, is there anything stopping me from checking the resistance of the pot once "set" and...

I have a Stryker 447HPC2 and a Texas Star 350HD. Haven't hooked the 350HD up to the radio, but am curious about trying it. The radio peaks about 80W, and I'm thinking this is a little too hot for the 350HD, even though it is a high drive amplifier. My question here basically is can the 447HPC2...

Just picked up a new GainMaster at a great price. I was leaning towards another A99 or an iMax, but I just couldn't pass up the price on the GM. $149.99 with free shipping from Wal-Mart online! I've read over the instructions, and have also read multiple threads on the GM. I still have a...

I have a Stryker 447HPC2 that swings about 75 on the peaks, and I'd like to find a nice amplifier (high drive) to go with it. Anyone have anything they might be willing to part with? Thanks!

I desperately need to disable the annoying "power on" beep on my President Lincoln II+. I use the radio with an amplified speaker and needless to say, it's a little jarring when I power the radio on. Disabling "key beeps" in the menu doesn't affect it. This may be something hard coded in the...

I just bought a new Cobra 29 and will be putting it on the bench tonight. I'm unsure if I wasnt to swing kit (cap/resistor) this radio or not though. I don't plan to ever run an amplifier, ever. I just want the audio to be loud and the signal to be clean. What is recommended? Adjust L14 to...

Cobra 29 LTD Classic with an Astatic 636L. I understand the 636L is a noise cancelling microphone and will result in lower audio drive, so how can I adjust for this? Are there any components in the mic amp circuit that I can swap out to boost drive a little bit? Thanks! 73