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ТЕМА: Using external antenna tuner

Using external antenna tuner 10 Сен 2018 22:07 #1

  • sp5gni
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Hi
using extenal antenna tumer with auto-tune option is not any issue due to the SunSDR low power.
But with power amplifier connected to Sun SDR it is not an option. High power is too dangerous for antena box in auto mode. You need to use "Tune" button which bypasses PA, but in this case you need to activate the extenal antenna tumer manually.
My wish is to add a new function Ext Ctrl tab, similar to Thermostat, which uses no 7 output.
You can add "External antena tuner" checkbox. When checked, it activate no 6 output, when "Tune" switch is pressed. No 6 output may be connected to antenna tuner, and activate auto-tune mode.
It is very simple change that may be done in the next software revision.
I use actually SunSDR2 PRO with EB300 power amplifier and MFJ-993B antenna tuner. The new option woul make may life easier ;-).
73Miro SP5GNI
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Using external antenna tuner 11 Сен 2018 11:50 #2

  • Rome
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Hi, Miro.
We've thought about it, most probably we'll add this feature in ESDR2 1.4. There are a lot of plans for ESDR2 1.3 we can't add another feature to it.
Роман, Roman
Expert Electronics
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Using external antenna tuner 16 Июль 2019 10:02 #3

  • SM0JZT
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So what we are saying is that there is no way in controlling a autotuner ( like for example a ICOM AH-4 ) from the rig when tuning ??

SM0JZT/ Tilman
SM0JZT - Tilman D. Thulesius
Sweden
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Using external antenna tuner 02 Янв 2020 00:48 #4

  • DL9NBJ
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Hi @all

I have own now an SunSdr2DX and looking for conneting my MFJ-993B Tuner. I need an simpe Opencollector Output what is coming together with the tune button. Any solutions.
Autotune is possible, but not so nice.

Thilo DL9NBJ
vy 73 de Thilo DL9NBJ
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Using external antenna tuner 05 Янв 2020 12:41 #5

  • DL9NBJ
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I dont wont to believe that there is no possibilty to connect an autotuner until now. So nice the concept of Hard- and Software is, until now no possibility for an autotuner?
How long is expert electronics on the market?

Thats so important like to drive an pa. I want to remote control my new sunsdrDx, looking for days how to connect an mfj-993b. I dont want to run it "autotune" mode, because he is starting sometimes in QSO.

There is an ATU connector on tha backside of the DX, i found absolutely no information. There is a tune button in the software, but no possibilty to connect it to an EXTCTL or to the ATU connector? I wont believe :evil:
vy 73 de Thilo DL9NBJ
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Using external antenna tuner 17 Янв 2020 12:23 #6

  • DL9NBJ
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The interaction with an external tuner is a disaster. When I switch the band, the SWR can be very high because it has not yet been tuned. If I press Tune nothing happens at first, although the control is set to 20%. If I move the Tune control to the right, software moves it back to the left. Guys, how is an autotuner supposed to start when it gets no power? At the moment I can only run the tuner in autotune mode, there is no control output for a tuner.

What about the tuner socket on the back of the DX? There is no occupancy plan yet. It would be no problem to activate this socket for the next update.

What we need (like Icom Tuner interface)

Icom Autotuner Connector pinout:

Pin 1 is the KEY pin, when the 'TUNE' button is pressed, it's pulled low by the tuner to tell the radio to start transmitting. This is the green wire on the AH-4 cable.

Pin 2 is the START pin to/from the microprocessor. Under normal circumstances the START pin is pulled high when a remote tuner is attached to tell the radio that the tuner is present. When you press 'TUNE' the radio pulls the pin low telling the tuner to start the matching sequence. This is the white wire on the AH-4 cable.

Pin 3 is POWER rated for 1 amp max and switches on and off with the radio. This is the red wire on the AH-4 cable.

Pin 4 is ground. This is the black wire on the AH-4 cable.
from https://www.prnewell.com/kc2wi/Icom_tune_control/index.htm

Thilo DL9NBJ
vy 73 de Thilo DL9NBJ
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Using external antenna tuner 12 Июнь 2020 11:00 #7

  • ON4VP
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This seems to be an interesting subject !! I own two tuners. The first one is installed fixed in my vbase station. It is a Stockcorner JC-4. It does support tuning from Icom and Kenwood using the 4 or 6 pins molex connector. (Start/tune/power/ground). It does not support native Yaesu tuning.

The second tuner is new, it is a smaller mAT-40 tuner that supports Icom and Kenwood (same as my JC-4) but on top does support all yaesu radios that uses 8-pin mini din and cat control.

I waited a long time to invest in SDR. I now just ordered the QRP model and I'm also looking for a way to connect my tuner and make it work from within the Expert software since the tuner and a longwire are my only antennas. I have no tuned dipoles, beams or verticals installed.

I hope a solution is in the making or will be possible soon.
73 de Phil,
ON4VP
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Using external antenna tuner 15 Июнь 2020 07:45 #8

  • DL9NBJ
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There ist still another Topic
Bug Report - Tune Funktion
please look here: eesdr.com/en/forum-en/software-dx/8250-bug-report-tune-function?start=15
vy 73 de Thilo DL9NBJ
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