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Hi all, I have just posted an update on a new AT-6666 PRO firmware update, PC Alignment (service mode) tool, and PC software here: https://www.worldwidedx.com/threads/at-6666-pro-update-firmware-pc-alignment-tool-pc-software.268861/ 73, Pez

Hello all, AnyTone will be adding a new a new radio firmware update V1.01, a new PC Alignment (service mode) software tool V1.02, and new PC Programming software V2.05 for the AT-6666 PRO, on their website soon. This will all be available in a few days at https://www.anytone.net/download PC...

You can check SWR in SSB mode, or in any mode for that matter. However the SWR meters ability to respond correctly the the rapid changing amplitude in SSB is the main limitation. One way to test SWR in SSB mode on almost any meter (cheap or expensive), is to transmit a constant audio tone...

Welcome! :) I would try a different antenna if you can also. Mag mounts are often bad news, they can cause all sorts of issues with common mode current, poor grounding (even when it tests ok with a multimeter), etc. Hopefully you will end up with 2 good radios. You can't ever have too many...

It could have had the service menu messed with - potentially causing a PA / oscillation problem to occur due to incorrect bias settings, or by the incorrect adjustment of other settings relating to the TX stage. Returned radio's that have have the service menu messed with are a big problem...

It is happening. And it will be available soon, along with new firmware to support it. 73

20Hz is annoying on SSB when it can be better than that. A solution is very close, which includes the reference oscillator adjustment. 73

Thanks for the info. That is an interesting one. What does the LCD report as the SWR value when this occurs? Does the displayed SWR peak higher than it should with modulation, and drop again without modulation, or does it "hang" (maybe indicating self oscillation). Also, can you try a different...

I have used RM Noise with a Hermes Lite 2, with Thetis. It's performance is actually amazing. I have almost zero noise floor at my QTH anyway, but the ability for RM to pull signals from below the noise floor is incredible. The only "annoyance" for me is the round trip processing delay, and the...

Good stuff. The TX bandwidth setting applies to SSB only. See "TONE" in the menu. You can see set result, on a LSB transmission here: https://www.worldwidedx.com/threads/anytone-at-6666-pro.268405/post-844461 73

I have the TF930 and I love mine! I prefer it over a HP that I have. I reference mine to a GPSDO. I added a 10MHz BNC input to the rear panel, for neatness, and I use the front as a 10MHz output if I need another 10MHz source. It has a built-in battery for portable use (I never use it...

They are both very close. But the AT-5555Nii short case will end up slightly shorter than the AT-6666 PRO, as the mic plug and SO-239 will protrude out a bit further on the PRO. (Note: The heatsinks are lined up to a straight edge in these pics, and BNC adaptors are fitted. 73

A summary of the changes between the original and the latest "short case" version: - No more VFO RX muting - CTCSS TONE readout (Hz) and CTCSS scanning. - WX RX, with VHF RX VFO from 136-174MHz FM. - Channel overwrite issues of the old radios, fixed - LCD dimmer control - VOX improvements...

Same factory, and the same radio's with different branding. Sold by different companies that offer different levels of warranty support (some offer none, some offer a lot). Take your pick. 73

It is true - failures can happen to any device. But "bugs" are something different to a failure. (When bugs exist they will be present in most, to all units). What issue did you have?

AT-6666 PRO = QT80 AT-5555Nii (original long case version) = QT60 AT-5555Nii (new short case version) = QT60 PRO 73

For anyone wanting to try the AT-5555Nii short case / QT60 PRO on digital modes, see the attached file for a DIY cable how-to, and the required menu settings. 73

For anyone wanting to try the AT-6666 PRO / QT80 on digital modes, see the attached file for a DIY cable how-to, and the required menu settings. 73

Cheers @c64new . I'm just here to help people out when I can, and to share any info I can. The PRO isn't perfect (what radio is?), but I do think it's the best RTX of its kind we've ever seen, but to each their own. : ) The main thing that will be looked at more in the near future is CW mode...