I want to run a POWER mic (D-104) on my new anytone 6666 can this work ? Some say the 6666 has a power Diode inside that will short the radio out.
If that's all you're going to have done, you should be fine. But then too, the Anytones'; use a filter designed for their microphone elements. So it may or may not work for you.
- Best way to put this is...If you decide to use a power mike, like a D104Minuteman or even the EC2018 (Why - 6666 has echo) the radio powers it's element thru the front mic jack - so it uses power from the radio for it's functions and Electret in the handset.
- Don't try to send or utilize any power from the radio unless you can buffer the output pin from the 6666 so it won't "draw down" or cause erratic operation. The Radio can utilize the Handset in a Tri-state function. It can recognize RX mode, Toggle and TX modes thru one pin without having to use Speaker Ground Return - but it requires Ground and the Power supply - but in a high-impedance state to access these functions. It utilizes one pin as the Voltage Regulated Data Port and processes this similar to many of the Bluetooth Handsets that use TriState - 8 Volt, 5 Volt - Ground (even 3.3V)
- If you haven't already, get the programming cable for it. At least when it does it's blank stare back at you, you may be able to make it recover by "reloading" - do a back up of this software so you can revert back to OEM.
The "power Diode" is a misnomer, you can put a power mike on it, but if you attempt to modify the radio by defeating limiters, you may or may not get away with it.
The "Power diode" others call it - is actually is a self monitor feature on the radio - it's part of it's Power On Self Test.
There are several steps and stages it has to verify power goes to specific areas and it receives data from others. If it can't sense these, it can "disable" itself using MUTE and LOCK features to prevent unwanted operation.
You can defeat these, but you run the risk of destroying the Microcode they use to boot during either Hard_Reset or a power off - power on - Self Test - if that fails, you get something similar to Windows ...
Only It's called the "Blank Screen OF Death" the Microcode or controllers handling it - just quit working - went corrupt.
It writes back data to it's registers upon power down, if you try to "upset the apple cart" the write back can fail. Hence your corrupt code and now dead radio.
Lester did up a vid showing a SP-1 processor,
So be careful when doing mods, the radio can do a lot, but it doesn't tolerate mistakes - it can be fatal.