On Dec 23, 2024, at 12:22?PM, Toby Burnett via groups.io <ruffdog272@...> wrote:

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I've got a Bluetooth cat dongle plugs into 817. Like Jeff, can use 817 commander wireless for screen display and direct entry etc etc. Good for digimodes ptt too.

Toby MM0TOB?

On Dec 24, 2024, at 10:09?AM, Steve Black KB1CHU via groups.io <kb1chu@...> wrote:

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I ordered one too and will try it. After it comes in We can get together and figure something out. I have both a 857 and 817 radios. dont? open yours till we see if it works as you may be able to return it. Steve kb1chu

On Dec 23, 2024, at 11:13?AM, Mike Davis via groups.io <maddmd818@...> wrote:

12864

Thanks Greg. I’m nowhere as talented as you in understanding ?the options. I do have a spare backup camera kit…hmmm. My other concern is that I’m using the CAT connection for the Z817 LDG tuner. So unless there is a way to use both devices together or an A-B switch, assuming baud rate etc are the same, it just complicates the radio. Maybe my pico LED front illumination idea is the easiest, if not very elegant.

Mike Davis WA1MAD

On Dec 21, 2024, at 1:27?PM, Greg D via groups.io <ko6th.greg@...> wrote:

? I've not used that particular product, but I don't think there's much more to know about it.? Connect it to the radio and get the two to talking.? The device just loops through fetching the parameters, displaying the information on the screen.? You probably want to cobble some sort of case for it, to protect the electronics.

I built something similar from a Raspberry Pi 3B.? I have the radio in my car, and as you can imagine it's impossible to read the display while driving.? But the car's in-dash radio display has an input for a back-up camera, so I wired the Pi's video out into that and wrote a short Python script to read the radio's frequency, mode, and such, displaying them on the screen.? The car's display is FAR more visible, and with the Pi I can run other radio-related apps such as YAAC for an APRS map.

Greg? KO6TH

Michael Davis via groups.io wrote:

Hi, my non ND 817 display is fine, but 2 color backlighting isn’t very helpful in low light. I see a $42.88 external CAT display device, 12864 on Ali Express, but very little info. I’m not skilled enough to do any mods, but a plug and play, inexpensive option would be nice. For now, I’m experimenting with an external, soft white, pico LED to illuminate the screen from the front. Kind of like a reading book light. Anyone using this or other device? Thanks

On Dec 21, 2024, at 1:27?PM, Greg D via groups.io <ko6th.greg@...> wrote:

? I've not used that particular product, but I don't think there's much more to know about it.? Connect it to the radio and get the two to talking.? The device just loops through fetching the parameters, displaying the information on the screen.? You probably want to cobble some sort of case for it, to protect the electronics.

I built something similar from a Raspberry Pi 3B.? I have the radio in my car, and as you can imagine it's impossible to read the display while driving.? But the car's in-dash radio display has an input for a back-up camera, so I wired the Pi's video out into that and wrote a short Python script to read the radio's frequency, mode, and such, displaying them on the screen.? The car's display is FAR more visible, and with the Pi I can run other radio-related apps such as YAAC for an APRS map.

Greg? KO6TH

Michael Davis via groups.io wrote:

Hi, my non ND 817 display is fine, but 2 color backlighting isn’t very helpful in low light. I see a $42.88 external CAT display device, 12864 on Ali Express, but very little info. I’m not skilled enough to do any mods, but a plug and play, inexpensive option would be nice. For now, I’m experimenting with an external, soft white, pico LED to illuminate the screen from the front. Kind of like a reading book light. Anyone using this or other device? Thanks

Hi, my non ND 817 display is fine, but 2 color backlighting isn’t very helpful in low light. I see a $42.88 external CAT display device, 12864 on Ali Express, but very little info. I’m not skilled enough to do any mods, but a plug and play, inexpensive option would be nice. For now, I’m experimenting with an external, soft white, pico LED to illuminate the screen from the front. Kind of like a reading book light. Anyone using this or other device? Thanks

I have just replaced the front panel PCB on a friends FT817ND (Lot82).

I had called Yaesu UK and the told me that the board was compatible (CS1909409).

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It was a straightforward replacement except for desoldering the AF-SQL/RF pot.?

I had to snip the pins of the old connector to remove it but I do not believe that I damaged the pot and it seems to test ok.

On powering up the LCD screen display blinks and there is no audio.? I am able to change frequency, mode, etc and all buttons and dials seem to work.? However, the ?AF-SQL/RF pot does nothing.

Searching the web I am told that this is clasical of the PLL not locking.

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I plugged in the original board and this seems to lock (PLL wise).? I have no screen (reason for replacement) but using 'FT817 Commander' software I can 'see' the frequency, mode etc and all seems to be well on the receive front.? Audio is working.? The radio shuts down when I try to transmit but this may be RF getting in somewhere it shouldn't (the whole radio is out of its container).

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I obtained all the parameters from the service menu on the original board and programmed it into the new one hoping that this was the answer.? No difference.

I presumed that I would have to do a full alignment and I started this.? I did not get very far:-

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Reference Frequency Adjustment - No problem - freq and voltage fine.

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VCO VCV Adjustment - voltage wrong and not adjustable as PLL not locked.

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PLL "Unlock" Display alert - unplugging the Ref Unit the voltage is 5mV on J2002 (pin1) but no change in the display.? The voltage is 25mV with the unit replaced.

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2nd Local Adjustment - No problem

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3rd Local Adjustment - not possible as no transmit

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And thats as far as I got.

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Am I missing something?? Is this board really compatible?

Is there something specific that I need to alter (pot,menu item etc) to allow the PLL to lock.

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Any help gratefully received. Thanks.

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Best wishes,

David G7IBO

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