Can you listen on another receiver? Just to be sure. (Also check NB is OFF, on the RX you are using to listen).
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Anytone at-5555n II (version 2)
- Thread starter Eldorado828
- Start date
To be honest and to show my ignorance, I don't know what that looks like, where it is located or how to tell if it is good once I do find it. But I'm definitely game to try.
To try to resolve the SSB voice distortion, I replaced the four circled IRF520s with Vishay-branded ones from DigiKey, the circled high power bipolar transistor TIP36CW and the L7808CV voltage regulator. The latter two were mainly because they were a) inexpensive b) easy to get to and c) sounded like they may have something to do with what I am trying to resolve (WAG). Please remember I am very new to this, the learning curve is greasy and the amount to learn is mammoth.
If I were to hazard a guess, I'd say the pre-driver transistor is the one on the left side just around the corner from the other three IRF520s (circled in blue). If so, it was replaced too.
I was thinking of Q109, I believe it is the pre, predriver.
No, Q109 has not yet been mucked with by me. I'll see if I can pull a part number off of it and do some digging.
Last week I invested in a 10 power and a 30 power lighted magnifying glasses. I have joined the gang of geezers that can't read all that damn fine print anymore. Could be much worse though!
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The only identifying marks I found on Q109 are on the back and they are "02314" on the top and "F 1H" on the bottom. My initial search turned up stuff like the following light reading.
Or how about an octopus hook?
I'll continue looking after work today.
The only schematic I am aware of, is the original version of the original 5555. Might not be much help, but might provide some clues.The only identifying marks I found on Q109 are on the back and they are "02314" on the top and "F 1H" on the bottom. My initial search turned up stuff like the following light reading.
View attachment 63053
Or how about an octopus hook?
View attachment 63054
I'll continue looking after work today.
You'd probably have better chances of finding the part used in the Stryker counterparts. Information is probably more available than what you'll find for the Anytone.
It might be a 2sc2314, a common 27mhz driver transistor.. heres the data sheet for it, pwr out is around 1.5 watts.
I ended up deciding to swallow a bit of pride and stubborneness and sent the radio to a service shop a few hours away from here. Hopefully the tech there can get the radio back to a solid starting point and I can avoid repeating the errors that contributed to it needing service in the first place.
The only way to treat these Anytones is to enable 11 meters, and close it back up. They seem to do a very good job at the factory tuning these radios.
By the way, the KL-300-p is loafing along at 150-170 DOSY watts with the Q5n2 pushing it with 12 w. I've gotten 200, but I want it to last.
By the way, the KL-300-p is loafing along at 150-170 DOSY watts with the Q5n2 pushing it with 12 w. I've gotten 200, but I want it to last.
I get great reports on the SSB audio. Stock mic with the gain maxed in the menu. I don't use the amp on AM.
read the entire thread. appreciate all y'all sharing your experiences.
i like the size, and 6 pin mic connector of the AT-6666. the RJ-45 mic connector kinda urks me. however i don't like the heat sink on the AT-6666 near the PL-259 connector. looks like it would be a PITA to connect/disconnect often. digging the features of the AT-5555n II. seems a more refined than the AT- 6666. volume knob seems handier on the AT-5555n II for mobile use. with the heat sink it's 12" long though :O
would the AT-5555n II be better in a noisy environment like a jeep with a soft top? i see it has noise reduction on TX. how useful is it? would a noise canceling microphone be the better option?
how low does the RF power go out of the box on the AT-5555n II? for vehicle to vehicle within sight of each other.
i'm thinking of getting the AT-5555n II. then if Anytone releases an updated AT-6666 II, the AT-6666n II will become a base station.
/richard
i like the size, and 6 pin mic connector of the AT-6666. the RJ-45 mic connector kinda urks me. however i don't like the heat sink on the AT-6666 near the PL-259 connector. looks like it would be a PITA to connect/disconnect often. digging the features of the AT-5555n II. seems a more refined than the AT- 6666. volume knob seems handier on the AT-5555n II for mobile use. with the heat sink it's 12" long though :O
would the AT-5555n II be better in a noisy environment like a jeep with a soft top? i see it has noise reduction on TX. how useful is it? would a noise canceling microphone be the better option?
how low does the RF power go out of the box on the AT-5555n II? for vehicle to vehicle within sight of each other.
i'm thinking of getting the AT-5555n II. then if Anytone releases an updated AT-6666 II, the AT-6666n II will become a base station.
well, how is it? please and thank you.
<rant> i own this power supply. it's OK if you don't need to switch voltage/amperage settings often. problem is the knobs quickly (3 seconds) 'time out' and you have to push them to activate them again. plus, it's fan sounds like a hair dryer at/above 1A. unless you are setting a voltage/amperage and leaving it there, and are willing to live with noise above 1A (or modify the fan) avoid this power supply. </rant>
/richard
The radio specs on the Anytone site state the operating voltage range for this radio is 13.8 volts +- 20 percent ( about 11 volts to 16.5 volts).
How many volts are you running your Q5N2?
How many volts are you running your Q5N2?
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