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  1. Ft817
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60dbm Neptune Amplifier + or -

 

Hi Lou,

While troubleshooting this, the maker recommended disabling the auto band sensing feature... the pointed out steps didn't worked and that is why we are looking at firmware update, trying to disable auto band sensing.

I guess your comments are aligned with what maker is trying to conclude.

73 Anaxi, CS7BGW

On Thu, Jul 25, 2024 at 10:44 PM, Lou Blasco wrote:

Anaxi said he is waiting for a FW update - that's a strange troubleshooting approach but maybe it has something to do with the RF sensing circuit.
 

Hi Anaxi,

Well that explains why the manufacturer has suggested the FW update. At least you can take comfort that it's probably not the radio. I'm watching with interest.?

I looked on the 60dBm website for a technical manual for the amplifier but could not find anything. Do you know if there is such a thing?

Regards

Lou
VK3ALB


On Sun, Jul 28, 2024 at 9:37?AM Anaxi via <anxanywhere=[email protected]> wrote:

Hi Lou,

While troubleshooting this, the maker recommended disabling the auto band sensing feature... the pointed out steps didn't worked and that is why we are looking at firmware update, trying to disable auto band sensing.

I guess your comments are aligned with what maker is trying to conclude.

73 Anaxi, CS7BGW

On Thu, Jul 25, 2024 at 10:44 PM, Lou Blasco wrote:

Anaxi said he is waiting for a FW update - that's a strange troubleshooting approach but maybe it has something to do with the RF sensing circuit.
 

Lou,

That debugging session is today, in about 10m, I'll ask for manual... I haven't any so far.

Anaxi, CS7BGW
 

Got my firmware upgraded, according to maker, some improvement on “frequency measurement”… Indeed the issue I was seeing seems to be gone and now both SSB/voice and FT8 are working properly.

I also asked about some manual of this amp and there is nothing on public scope.
 

I didn't find a manual from the manufacturer, but I did find a source on Github where a guy posted a 'fix' to some SSB issue he was having.? I am not quite sure what the nature of the issue was--something about the amp switching off if he goes to SSB (from digital?).? He appears to be running a Hermes Lite 2 with the bandvoltage as an automatic band select.? This is going over my head, quite honestly.? But its the first schematic I've seen anywhere of the amplifier.
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(this gets you to the repository)
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Here is one of the Neptune 100w schematics:
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Here is the one that he explained in detail how to add a ESP32 controller and take over some of the amplifier functions to prevent this error:
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Not sure how similar the 50w schematic is to the 100w, and they have a manual band-switcher amp also.
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Greg, K3RW/KH7
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