ATS 20 & ATS 20+ A Few Fixes for Tinkerers

[sunwave]

ATS 20/20+ Rotary encoder Wrong Direction:

There is really no need to take the soldering iron to your radio when you have one that when you spin the rotary encoder, frequency is in the wrong direction. In your ino sketch two numbers need to be swapped. if 3 is on top change to 2. Change 2 to 3 on the next line


reflash and reset.

Slight lag changing bands:

The ino sketch will have two FM and MW lines. Only one of each is needed. Delete the MW and FM band not in your region. This frees up space on the nano which is limited to 32kb. Si4732 doesn't like duplicates like this too.

reflash and reset. ATS 20/20+ will boot with LW band instead of FM.
Note on deleting lines like this. Backspace it up one in alignment to the next line. Never leave spaces between lines in C code!!

Battery Mod without soldering a circuit to the PCB. ATS 20+ ONLY!!

From the factory it is connected to A1 so we need to edit a line. Small change from A2 to A1.



reflash and reset. The older ATS 20 may still need the circuit soldered in but leave it to A2 in the ino sketch.
Fixes tested on firmware 3.0.7g by PU2CLR

In the world of electronics if we do not need to take a soldering iron to a circuit then by all means use the method that works best for. Editing the ino sketch is best.

 

[sunwave]

If gaps in tuning, change band table for this in your ino file:



Double space each line as shown. Verify, flash, reset eeprom. No gaps. Commented out "//" is just reference and the radio doesn't care about band labels.

 

[majoco]

Is it possible to make the VHF FM band into the Aero band 118 to 136MHz, AM 12.5kHz spacing? I suppose you'd have to call it another SW band. I'm certainly not Arduino savvy and I don't want to make my nice new receiver into a brick!

Thanks - Martin

I have just received an ATS25 max in double quick time - I ordered it through AliExpress on the 27th Feb and received it today 10th March -must be some sort of record! I'm busy playing with it and it's all good so far on the whip but we have guests at the moment and one is camping in my radio playroom so I have no access to an outside anatenna.

 

[sunwave]

Is it possible to make the VHF FM band into the Aero band 118 to 136MHz, AM 12.5kHz spacing? I suppose you'd have to call it another SW band. I'm certainly not Arduino savvy and I don't want to make my nice new receiver into a brick!

Thanks - Martin

I have just received an ATS25 max in double quick time - I ordered it through AliExpress on the 27th Feb and received it today 10th March -must be some sort of record! I'm busy playing with it and it's all good so far on the whip but we have guests at the moment and one is camping in my radio playroom so I have no access to an outside anatenna.

You will need some knowledge in Arduino coding. It looks like a bunch of modified json entries. A bunch of scripting over actual coding. There is a developer that sells updated firmware for it. Download - HARDUINO

 

[sunwave]

Also refer to this facebook post. Si47XX for Radio Experimenters | Hi everyone..
That link has information of the upate and such. @majoco
All you need to do is learn how to flash your ATS 25 Max and activate the update in the device. No coding required.

I need to clarify I can help with the older ATS 20+ as far as the most basic functions. I do not have an ATS 25 Max but I know where to find something.

 

[sunwave]

Is it possible to make the VHF FM band into the Aero band 118 to 136MHz, AM 12.5kHz spacing? I suppose you'd have to call it another SW band. I'm certainly not Arduino savvy and I don't want to make my nice new receiver into a brick!

Thanks - Martin

I have just received an ATS25 max in double quick time - I ordered it through AliExpress on the 27th Feb and received it today 10th March -must be some sort of record! I'm busy playing with it and it's all good so far on the whip but we have guests at the moment and one is camping in my radio playroom so I have no access to an outside anatenna.

I am curious if you were able to update your ATS 25 Max. The update should have what you're looking for.

 

[majoco]

I haven't even thought about an update yet, I'm still learning the ins and outs! I have found one useful thing though - did you know that the tip of the stylus they supply neatly fits into the 'dimple' on the tuning knob! Much easier for fast tuning!

 

[sunwave]

I haven't even thought about an update yet, I'm still learning the ins and outs! I have found one useful thing though - did you know that the tip of the stylus they supply neatly fits into the 'dimple' on the tuning knob! Much easier for fast tuning!

That is pretty handy to have. Just be cautious on turning that encoder too fast. They do install a good encoder inside. Not the highest quality. You can find the highest quality encoder that will fit and work right. That is if it is worth it for you.