Juma100 or clone with Juma_ctrl software

[Luca De Biase]

Hi everyone,

just to share my experience using a Juma clone with the remote program Juma_ctrl.exe

It's as small exe that allow to see on the pc screen the operating parameters of the amplifier and to operate some controls. A small config.ini allow you to set your call and the serial port parameters (9600,N,8,1).

Useful when you have'nt the amplifier in the line of sight. I use a 2mt long usb/serial cable with trs plug matching the RS232 port  available on the rear of Juma. The trs pinout is tip=rx ring=tx sheld=gnd. If you buy the inverted cable (like me, hi) is easy to change the pinout internally to the Juma moving the 2 jumpers in the "program" position.

You also have to set the Juma configuration menu in "remote" mode and everything works perfectly.

I would like to use this post to thank you the writer of this little utility.

Hope this help someone.

'73

Luca EA8DJR

[Martin Domino]

Hi Luca

maybe you can help

 
i moved into the house this winter, and operate remote control via a local fiber connection PC><hermes lite, 

it works fine. 

What i would like to do is use a raspberry pi to control juma100 via a node red.

on the same lokal fiber connection.

Do you know if there is a guide for that setup.
or first an installation of node red on raspberrypi and connection to juma 100.

OV6O,OZ9MSD

[G4ZAL]

I have a Juma PA1000 (1kW) amplifier and can use my Hermes-Lite 2 to directly control it.
I do it diffently than most as I have an early HL2 and there was no I/O board available and you had to 'roll your own'.
With my solution, when the HL2 is instructed to change band, it also instructs the amp etc to change band (no need for additional hardware/software).

I use a 3v3 Arduino Pro Mini mounted internally to the HL2 and it 'reads' the serial data line and makes an output accordingly.
The advantage of the serial data is that it can correctly identify each seperate band, which cannot be done with the I/O board - e.g. 10m and 12m are lumped together for filter selection when using i2c data.

With the Arduino, you can change the code to make a different output to suit your needs.
In the past, I have made different outputs to control a Hardrock 50 amp and also my Juma PA1000 (and also CAT control my antenna).
I made a short write up here...
https://g4zal.blogspot.com/2025/08/hermes-lite-2-band-data.html

Nigel
G4ZAL

[gareth]

Im using this little tool here also and works 100%. I have tried numerous times to get the container version but get nowhere for some strange reason. Im connecting directly to the amp via the serial port as i don't need remote use. The container version would be better. Will keep trying.

[Luca De Biase]

Hi all,

Juma_ctrl.exe  is good if you work locally in the same pc where the Juma100D serial port is connected to. Juma 1000 is different and has more options and a different software. 

If you are using it remotely the nodered solution OR the container solution is the option to go for avoid to add any extra hardware.

In the nodered version you need to install nodered and the modules the Juma dedicated flow needs to use. Then you can contol the ampli via nodered UI windows in your browser.

More info on this in nodered group in groups.io
I can talk for the container solution i developed with the help of IW7DLE who write the client/server .

This solution allow Thetis to control directly via a custom container the juma100 in the remote site. I thin is less resource consuming and, in the future can led to a automated manual band change via Thetis.

Actually can control any function of the Juma 100 in F-sense mode.

I will explain i.e. the  Martin's use case.

On the remote location you have hl2, Juma100 and a pi (or a pc)  connected and working.

On the pi you need to install node.js software and related modules, a small routine called server.js and his config file running. Server.js listen via your subnet the data to pass to the Juma serial port.

On your operating location you need to have a pc with Thetis configured and working. You have to add a small client.exe with his conf file to launch via the Thetis automated startup. Also you have to add a new container and import my .dat file and configure MMIO in Thetis.

The client talks with the server in remote location and can translate the serial data received from Juma in a format readable from Thetis and display in his container, at the same time can send the command to change setting in Juma via the container buttons (stby/oper, pwr levels etc.)

I set a github repository that contains all you need.

https://github.com/pharmaw/Juma100D-remote-control

And because an image worth more than 100 words, i will add a screen capture. In the low right corner you can see the container.

Hope this helps.

'73 Luca EA8DJR

[Martin Domino]

I'll dive into it and give some feedback on my progress.

Thanks for the replies Nigel, Gareth, Luca

From Martin OV6O

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Med venlig hilsen

 

Martin

 

[Charlie Rubenstein]

Luca, where do you find Juma_ctrl.exe?

73 de Charlie KB8CR

[Luca De Biase]

Hi Charlie, i found it here:

https://drive.google.com/drive/folders/1hUjZxdLiu8qhNi1OJin17i58c4xb3bFp?usp=sharing

73 Luca

[Charlie Morrison]

Hi Luca

What are the buttons "Active" "away" "CQ" QRV" QRT" etc...is that another container?  I am interested

Juma 100 Control working beautifully here

73, Charlie GI4FUE

[Luca De Biase]

Hi Charlie,

happy to ear that juma container works, you are using a Pi for running the server? I think that even a cheap headless Pi3 can do the job and also manage other aspect of a remote station (relays, antenna switch, etc.)

The other container is the Discord connection. Thetis is connected to a Discord bot and send in the Thetis Discord some info about the activity of my station (location,qrg, version in use, activity, etc.). The same as other thetis users can do. Useful to communicate with stations using Thetis with a sdr compatible to. Go to Thetis Discord in subforum "thetis bot" and you will see.
'73 Luca EA8DJR