I am running a Flex 6300 & OM3500A and I was in search of the way to make my PA running automatic with the band changes in the Flex! The software DDUtil was not successful to establish connection to the in-between the rigs and which has been confirmed by the Author even though OMpower website shows as the successful method to connect the PA with RIG through PC!
I guess the only way left is to connect the PA with Radio through Serial cable, ca any one suggest the wiring diagram to make the serial cable to do so?
Best 73s de
I can't see how it would be possible to talk to your amplifier unless you ran an RS232 cable between your computer and your amplifier. There has been discussion of using mini computers dedicated to work with the Flex radios to provide the necessary interfacing and direct control to peripheral equipment. I am using such a computer to control my beam headings and my StepIR control box. In both cases I am using USB to RS232 cables which requires a driver set up in the controlling computer. DDutil provides the communication between the computer and the Flex radio.
I had the same problem with my OM2500A and tried everything I could to get the OM2500A to follow the Flex.
The solution was very simple. There is a Icom CI-V port on my OM2500A, just as there is on your OM3500A. This is what is needed:
1. A USB to Serial adapter
3. An Icom CT-17 level converter
4. A 9 pin to 25 pin serial cable (because the input on the CT-17 is a 25 pin connector....a 9 pin to 25 pin converter would also work)
5. A two conductor cable with male 1/8" connectors on each end connects the CT-17 to the CI-V input on the OM3500A
Basically DDUTIL will interface to the Flex and send out frequency information in ICOM FORMAT through the virtual COM port that the USB to Serial Adapter will create when it is plugged into a USB port. This virtual COM port number will be used to tell DDUTIL where to send the frequency information on the amplifier page of DDUTIL.
Run the DDUTIL Setup and select the amplifier page. On that page there is a section for the Icom PW-1 amplifier. Enter the COM port number that the USB to Serial Adapter created into the port entry box in the PW-1 section. I checked both the RTS and DTS boxes.
On the menu system of the OM amplifier select OLD ICOM as the Transceiver interface. The New ICOM menu selection does not seem to work as well. This works beautifully and has yet to fail to follow the Flex frequency, accurate to 1 Khz.
My physical connections are as follows:
I have a 50 foot USB repeater cable from my computer to the next room where the OM2500A is on a cart. That USB repeater cable connects to a Prolific USB to Serial converter. The serial converter 9 pin serial output connects to a 9 pin serial to 25 pin serial converter cable. The 25 pin side of that converter cable plugs into the 25 pin port on the Icom CT-17 box, and a 1/8", 2 conductor cable connects the CT-17 to the CI-V input on the OM amplifier.
Sound complicated, but it is dirt simple compared to everything else I tried. It works. Good luck.
After trying all solutions I found that DDUTIL is NO LONGER required! specially with the latest version of the Flex Smart SDR.
Once I updated the software, I used CAT program to create all necessary ports and its solve all problems.
It was easy, simple & straight forward.
Thanks again for your time & effort.
Greetings from A7...
The Steps are here to connect the OM3500A with Flex 6300, you need to have null modem serial cable / cross over cable with female connector in both end
Connect the Serial cable to the serial socket of PC (PC device manager shown as COM 1) & other end to the port written as Transceiver in the PA.
Now go to PA & SET the transceiver as Kenwood & Bud Rate 9600 and put it in auto.
Install the latest software for Flex 6K series Ver 1.6.21 Smart SDR & CAT and connect the Radio and turn it on the flex will automatically generate virtual serial ports, in my case serial COM 4 & 14
Open the smart SDR CAT and press Add Serial Port and name as VSP COM 5, select the newly added serial port and click edit.
Select Port Type Exciting and select the original hardware COM port of PC namely COM 1in my case and assign as CAT COM to VFO A
Once you complete the above step now you could hear the PA Turing to the Radios frequency and establishing the connection. Now OM3500A will follow the Flex6300 everywhere!
Best 73 de
user of a older" 2500A or 3500A can order a new IC with Flex6xxx
included as selectable TRX for communication. It's not a big deal to
change the circuit; only a screwdriver is needed. No soldering.