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Anytone at-6666 v3
- Thread starter Eldorado828
- Start date
Got a reply from Quxaing today.
Short, to the point.
"Sorry not, the hardware is different."
So that's the word from the guys building them.
73
Jeff
Hmm, I will have to compare the 2 schematics to see what it is. So far, I haven't seen any hardware differences, but I haven't looked very close at the parts where the firmware goes.
Here is the picture from Tim in case anyone missed it. This info is on page seven.
Not yet. I thought about doing it to run a 4 pill. I will have to see if I have the right diode.
FYI - the mod that TIM has the picture of is not the traditional NPC-RC MOD of paralleling C68/R74 with a diode & resistor. His mod has the added resistor soldered to the junction of R191/E14/D45 which is on the "other" side of R191 (15K). It does work, but is not in the traditional location of the NPC-RC. The actual correct location of the resistor connection is the junction of C68/R74/Q53/R191/C61. Unfortunately, there is no connection on the bottom of the board for that. TIM's mod uses the positive lead of E14 because it penetrates to the bottom of the board.
I did not do the NPC-RC or RWB mod on my AT-6666 (plenty of swing IMHO) which uses IRF520's in a 1x1x2 configuration. It also appears to have 13.8v on the finals in SSB mode.
I did do the NPC-RC & RWB mod on my Lincoln II+ (weak low power swing) since it uses FQP13N10's in a 1x2 configuration and does not have 13.8v on the finals. It really brings it alive and it swings as much as my AT-6666 now.
I did not do the NPC-RC or RWB mod on my AT-6666 (plenty of swing IMHO) which uses IRF520's in a 1x1x2 configuration. It also appears to have 13.8v on the finals in SSB mode.
I did do the NPC-RC & RWB mod on my Lincoln II+ (weak low power swing) since it uses FQP13N10's in a 1x2 configuration and does not have 13.8v on the finals. It really brings it alive and it swings as much as my AT-6666 now.
Without modification, 2.5 watt dead key would be how much true peak swing on the AT-6666?
Reason I am asking is because radio would be driving a straight four with Toshiba 2879.
I know I'm bring an old thread up to the surface, but after much searching, I can't seem to find an alignment procedure the Quad 6.
While I'd love to get an an entire procedure for a clean alignment.
I'm interested in TX freq adjustment for all modes. Would like to center one radio up well.
I have a few of these Q6's. One in my shop and a couple in my vehicles. The one in my shop (and the reason it stayed in my shop) is the furthest off freq by an annoying amount. And it's the only one (seen one other complaint while googling - but no solution) is makes a feed back audio squeal when its first turned on. The Talk back is off, seems either the talkback is firing up or the PA is firing up and using the speaker during start up (after the front panel knob is used to turn the radio on - before it knows it's a radio and fully booted).
Get the mic far enough away, and doesn't happen. Even with the volume all the way down, still happens. Seems this one radio is a bit funky.
Or us an external speaker far enough away, or have it off, doesn't happen.
Cover up the mic or play with positioning, and it changes the tone of the squeal.
Strange.
I bought the radios from an importer, warranty is straight with the Factory in China. Didn't want to bother to be honest.
Any thoughts on the squeal and a sharing an alignment procedure would be appreciated.
73
Bob
While I'd love to get an an entire procedure for a clean alignment.
I'm interested in TX freq adjustment for all modes. Would like to center one radio up well.
I have a few of these Q6's. One in my shop and a couple in my vehicles. The one in my shop (and the reason it stayed in my shop) is the furthest off freq by an annoying amount. And it's the only one (seen one other complaint while googling - but no solution) is makes a feed back audio squeal when its first turned on. The Talk back is off, seems either the talkback is firing up or the PA is firing up and using the speaker during start up (after the front panel knob is used to turn the radio on - before it knows it's a radio and fully booted).
Get the mic far enough away, and doesn't happen. Even with the volume all the way down, still happens. Seems this one radio is a bit funky.
Or us an external speaker far enough away, or have it off, doesn't happen.
Cover up the mic or play with positioning, and it changes the tone of the squeal.
Strange.
I bought the radios from an importer, warranty is straight with the Factory in China. Didn't want to bother to be honest.
Any thoughts on the squeal and a sharing an alignment procedure would be appreciated.
73
Bob
Here is some info from people who have tried this. I have not tried any of it.
- No one is chatting at the moment.
...runna pile-up on 6m SSB