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anytone 5555 and lincolon2 audio quality

AK #5 said:
Do you have the settings for that? If a scope is required, I'm SOL.
Wanna check it out for me? :)
Click to expand...
You need a multimeter to perform the adjustment. You could benefit from an O'scope after the adjustment is done, but you could do it and test without.
 
BC Coyote said:
As far as the Lincoln 2+.... a friend has one and he was very unhappy with the SSB receive audio on it. It tended to sound overloaded on all but the weakest signals. So you had to run it with the RF gain way low...........
This is supposedly a known problem with the 2+. Its transmit audio was excellent.
Click to expand...
Exactly the same with my Lincoln 2. It's a shame. Otherwise it's a great radio. I rarely use it. My CRT 7900v that I bought from a member here is excellent on transmit and receive and easy to roam the frequencies.

I often get asked what radio I'm using because it sounds so good. It's nice that it cover 10-12 meters.
 
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nfsus said:
we have both of these radios. both work well, however, no matter if you use the built in speaker or an external speaker they dont sound all that great on ssb. it almost sounds like theres a dsp running or the filter isnt wide enough. anyone else notice this? is there a cure? biggest downfall of this radio to me
Click to expand...

I have read numerous postings about this SSB audio receive problem
in these newer 5555 radios. Bad distorted audio on stronger SSB signals.

and after this:

BayouRadioAmplifier

Thread 'old RCI 2970 - solved: distorted receive in SSB mode with moderate to strong signals.'

I have this old 2970 (with the -013 board) that had many problems. it was worked on by others,
sometimes making things worse. (solder blob shorts across circuit traces., etc)

But the last thing I was trying to repair was while in SSB receive, with even a moderate
strength signal, the audio was distorted. The RF gain had to be turned way down
to hear a clean SSB signal.

But clean signals received in AM, and the AGC is working. and in SSB the AGC is working.
I could see the bar graph meter move and also measure the AGC voltage with a
scope at IC1-14, the voltage going up to about 3...
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.
the same problem. maybe same solution.
it is easy to tell, with a little O-scope probing.

But the AGC working good on AM receive, and
good audio out on AM receive.

I am thinking that there is not enough carrier re-insertion
in the SSB detector. it will vary from radio to radio.
many work great, and some don't.

check the carrier signal at TP5 (receiving in SSB mode)
add around a 20 pF capacitor across C155 to increase
this carrier level.

I have never touched one of these radios yet, so not sure
how hard it is to probe inside. I know it's SMT stuff.

if someone out there has one of these 5555's that
has this problem, I will be glad to take a look at it.
let me know. I work for fun in my radio room,
and for a little "beer money"
 
AK #5 said:
Radioddity QT 60
Click to expand...
Before you do anything, I suggest you read through this thread. See if this is something you feel comfortable doing. The adjustments you want to look at or change are CH6 IQ1,7 IQ2, 8 IQ3.

C

Thread 'Anytone AT-5555N II (version 2). AM modulation swing and or SSB safe power output adjustment'

I have seen over the years many radios can be "peaked" and done in a non harmful way that would not be considered "golden screwdriver" method. Most radios it is good to adjust the AM carrier for lower dead key and swing when modulated. Is this adjustable safely? Also are there any adjustments someone has found to peak the output for SSB that would not be harmful to the radio. I am adding a external temperature controlled fan/stand for the radio to always make sure it remains cool. I also want to take some pictures of the inside of "My" radio because it looks different from pictures I have...
 
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SuperLid said:
Before you do anything, I suggest you read through this thread. See if this is something you feel comfortable doing. The adjustments you want to look at or change are CH6 IQ1,7 IQ2, 8 IQ3.

C

Thread 'Anytone AT-5555N II (version 2). AM modulation swing and or SSB safe power output adjustment'

I have seen over the years many radios can be "peaked" and done in a non harmful way that would not be considered "golden screwdriver" method. Most radios it is good to adjust the AM carrier for lower dead key and swing when modulated. Is this adjustable safely? Also are there any adjustments someone has found to peak the output for SSB that would not be harmful to the radio. I am adding a external temperature controlled fan/stand for the radio to always make sure it remains cool. I also want to take some pictures of the inside of "My" radio because it looks different from pictures I have...
Click to expand...
I really don't want to fool with menu settings, so I guess I'll have to find someone who will do it for me.
Thanks for the info.
 

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