Thank you everyone.

I was just checking up on various connections to the X5105 and remembered your question.? I looked up the manual for the Xiegu XP125B linear amp, and its manual says that the amp does not have rf sensing and that a signal from the X5105, through the CE-19 six-pin DIN connector put the amp into Transmit mode.
I bought my X5105 from Radioddity, and it came with a Xiegu sheet about the CE-19.? The document page has a reference number at the top that? looks to me like a factory 'item' number.? It's 03-CZ1206 - maybe that could help you find a copy.
There's an "info box" on the sheet that says quote
"CE-19 PTT output signal by a relay output pins (sic), and X5105 completely isolated, can adapt to different versions of the XPA125, can als bo adapter to other brands of amplifiers (low trigger)."
end quote.
The 'connector definitions' part of the page says

"PTT CON ? ? ? ? PTT signal/BAND signal output port, the port PTT signal completely isolated with the host, providing linkage with the host "low" trigger.

If anyone still needs the info, it might help if they ask Radioddity support to put that document on their website downloads page.

Looking into the inside of the CE-19, I can see what looks like 5 or 6 tiny surface-mount parts, a relay and a small device that looks like an electrolytic capacitor in an aluminum case.? It also looks like the old, old metal-cased early transistors, but much smaller - about 4mm diameter and maybe 5mm high.
My radio, the "Outdoor Model" came with the CE-19, and included an 8-min mini-Din cable to connect the two.? The CE-19 has a 6-pin mini-Din female connector for the cable to the linear amp.? That cable was not included with my outfit.

I hope this helps to somewhat clear up the interconnection questions (problems?).
--
Doug, K8RFT

this is how it looks if you remove the case :-)

On Thu, Dec 17, 2020 at 06:20 PM, Dick de V wrote:

this is how it looks if you remove the case :-)

Wow!? That's great, Dick!? Thanks so much for the look inside.? The pictures are so sharp and clear!?
I was rather hesitant to take mine apart - I haven't even been close to using it yet.? It's still in the box.
?And I thought the CE-19 was just connector adapters.? There's quite a few parts in there.
--
Doug, K8RFT

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The active part of the circuit almost certainly looks like this:

On Thu, Dec 17, 2020 at 10:21 PM, Mike Colyar wrote:

?

This is cut and pasted from this link:?

?

Mike -
Here's another big thanks!? The diagram is very interesting, and the link to the complete manual is super helpful!
?
Technically, though, I doubt that the CE-19 uses the audio to create the PTT control voltage.? There wouldn't be much for it to work with on CW.? I think the CE-19 uses an inverter/optocoupler with its input coming from the radio's PTT DIN connector pin.? The info sheet with it says there's "complete isolation" from the radio, and the 'active low' in its description could be what energizes the relay in the CE-19.
Either way, the Wolphi info is very interesting and useful.
--
Doug, K8RFT

DO any of these solutions work for CW so you dont get the first dot clipped?

This is the way PTT works at the CE-19

Dick

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I have only used the WOLPHI design for PSK. In other words, I use this circuit to key the 5105 from my Android device not to key an amp.

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--
Brian
K0FBS

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Is it the weight, volume or possible fragility that gives you pause?

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--
Brian
K0FBS

Thanks for sharing Dick. True ham spirit ??
Merry christmas
73 de Jens DJ2GMS?

The CE-19 could be wrapped in leather or thin foam, or put into a small plastic box that has a notch in the edge for the cables to pass though.?? Double-stick foam tape holding it onto the radio could work too.
It doesn't look or feel that fragile to me, though.? It's quite small and light, and would normally be 'fastened' to the radio and amp by cables too.?
Now, dropping a rock on it might do some damage, or spilling a mug of coffee.
--
Doug, K8RFT

On Fri, Dec 18, 2020 at 10:01 AM, Dick de V wrote:

This is the way PTT works at the CE-19

Great job, Dick!!? thanks very much.
--
Doug, K8RFT

One could also set up (make) a simple circuit to have their key operate a double-pole relay, with one contact pair wired to the s5105 and one to the amp.? Made with a tiny battery and a reed? relays, it could be fastened right ont the key, or the key's mounting base.
Adding a second pair of contacts to the key itself "could" be possible too.? Tricky, though!
--
Doug, K8RFT

Additional info ->
I found some relevant description at

Where it says
"

The Xiegu CE-19 expansion port simplifies connection of?a PC or other data terminals, modems etc for digital mode operation.?The expansion unit extends the MINI-DIN8 interface to commonly used 3.5mm stereo sockets.

The unit also extends the MINI-DIN6 interface for the XPA125 amplifier interface independently so you can connect both a PC and an linear amplifier simultaneously.

Any third party hardware that needs a PTT input can be connect ?to the CE-19 PTT output. An onboard relay separates and amplifier to protect your X5105 transceiver.

A yellow LED indicates that the CE-19 is powered from the X5105 and a red LED lights up when PTT is active."

I also notes what comes with the CE-19 - -

In the box

I found this while looking for info about a "hoped for" PTT INput.? Apparently it's only possible with the MIC jack.? But I might have to test and find out what happens if I press the Morse code CW key - while in SSB mode.? (I want to connect a headset/mic unit.)

At
I also found a review of the CE-19 that saysi use the ce-19 for interfacing my g90 and x5105 with my xpa125b amp, and for digital ops...what a lot of folks do not know is that the ce-19 also allows you to use your xiegu with other amplifiers!connect your amp's keying line to the PTT CON port, which is a simple 2- or 3-pole stereo plug? i use my mx-p50m amp with the ce-19 and it is perfect!"

And I found another picture of the 'guts' of the CE-19 at

It shows lots of detail of the board and the parts mounted on it.

--
Doug, K8RFT

Hi Doug,

The picture in the link is the previous model of the CE-19. The picture as I sent some messages earlier is the current CE-19.

It started with me searching for a PTT in for exactly the same reason you have Doug, I also want to use my headset microphone.
I had assumed that PTT is made by connecting PTT and GND in the MIC connection with a switch. Unfortunately this is not true.
Next I wrote an email to Xiegu in China requesting information. There was never an answer.
After that I sent an email to Radioddity support and got a very quick response. However, the answer was exactly the same as in the manual and what is not correct.
Also support David from Radioddity wrote that it worked exactly as the microphone of the IC-7000. That is absolutely not true because I have an IC-7000 at my disposal and that's how it works, PTT is by pressing the switch on the microphone, connected to GND.
After I mailed this to David from Radioddity he was insulted and I received a reply:

//
Hi,

?

There is no way I can change the microphone designations from Icom or Xiegu. So far, the others that have offered desk mics for sale, made adapters, or are using other mics find the PTT circuit quite satisfactory. I am sorry you cannot.

?

Cheers,

//

The solution I then applied works well but is a workaround.The PTT switch, which is on the top left, can be set via the menu 6 as 'normal' and 'Toggle'. I set it to Toggle and then the X5105 goes into TX and when the transmission is ready I press again and then the X5105 goes into RX. it's not elegant but it works.

73? Dick DL1CLM

On Wed, Dec 23, 2020 at 05:13 AM, Dick de V wrote:

I also want to use my headset microphone.

I had assumed that I would have to use VOX.
I HAVE been looking into PTT control for use with a bluetooth headset/mic with a PTT switch module.? For that, I thought I would be required to use the PTT line from the MIC connector.? But now it sounds like that will not work!

Slightly related, I have been wondering about using a computer to add memory frequencies to the X5105.? I had found a free program for that which works with my IC-706MkII, and Xiegu (I think) said that their CI-V (CAT) is compatible with Icom's.
Just a few minutes ago, I installed DXLabs "Commander" and configured it for the serial port that the Xiegu CAT cable created.
It works!? Well, so far, I can control the radio's frequency from the keyboard.? Apparently I need another program "module" for memory management.
?
--
Doug, K8RFT

What about Chirp Doug?

Brian
K0FBS



--
Brian
K0FBS