Recent Posts

Pages: [1] 2 3 ... 10
Regarding the remote POWER ON of the KPA-500 amplifier, in going over the tech manual it appears you can turn on the amplifier by taking the aux connector pin 8 low, but only for a moment, do not hold low. I've attached a scan of the AUX connector interface pinout. Note it is a DE-15 Male plug. So... I will try using a pair of extra contacts on my webswitch to pull that pin low and see if it turns on the KPA. Otherwise I will have to leave ON in STBY all the time.
//dave WB7ELY
Hardware, Cabling, Installations / Re: Remoting a KPA500 + KAT500 & TS480
« Last post by dj0qn on 2019-10-20, 19:44:07 »
P.S.: actually the S-Box is for CAT multiplexing and would not help you much. Maybe the
Y-Box would help you with the KPA-500.

Also, I use serial port servers for my rotor and amp control. These have a couple of advantages
in that they are stand-alone and always connected. The ones I use are Lantronix, such as the

Mitch DJ0QN / K7DX
Hardware, Cabling, Installations / Re: Remoting a KPA500 + KAT500 & TS480
« Last post by dj0qn on 2019-10-20, 16:52:54 »
Hi Dave,

I can't help you on the KPA500, so maybe someone else can, or try the Elecraft reflector instead. I use a 12v
power line to turn on SPE amps and it works great.

What I wanted to say is there is no problem using COM2 instead of COM1 if one does not use CAT. This is a
straight through connection, as you can see in the manual.

You may also wish to take a look at the boxes sold by N6TV at  and at as these may meet your needs better.

Mitch DJ0QN / K7DX
Hardware, Cabling, Installations / Remoting a KPA500 + KAT500 & TS480
« Last post by wb7ely on 2019-10-20, 16:38:04 »
In have the KPA500 working remotely on RRC COM I. Works great with the null modem cable and remote utility. But I have to leave the amp on (in STBY) all the time. If you turn it off via the remote utility, then the RS232 is off and you cannot regain control unless you push the ON button on the KPA. One post stated that you could switch 12V to a pin in the DB9 plug intended to connect to the K3. Does anybody have any further details on that connection? Now moving on to the KAT500, can I connect it to the RRC COM2 port? No CAT in use and no rotor so wondering if there's anything I need to know before moving to that connection..? Does it need a null modem like COM I?
Thanks de Dave WB7ELY
General discussion forum / Re: K3 twin with RRC issues
« Last post by on4iq on 2019-10-11, 19:42:17 »
Tnx Mitch,
its was the powersupply, actually both powersupply that came with this 2nd hand rrc set are no good.
this affects the rs232 ports aswell.

General discussion forum / Re: K3 twin with RRC issues
« Last post by dj0qn on 2019-10-11, 19:11:46 »
This sounds like a power supply problem. It must work without the USB cable in it.

Here is my K3 CAT Checklist:

 CAT Checklist for K3 Twin
Note first that in a "Twin" configuration, COM2 is used to "tie" the two ends together and carries the CAT data. In order to access CAT, you need to get to COM2 without touching it. The easiest method is to duplicate COM2 over COM1 using a function in the RRC as follows:

- Change both RRC's COM1 to mode-7. Note that the baud rate does not have to be identical with COM2 to fit a lower bandwidth or software requirement.

- If using a "real" serial cable:
     - connect a straight through serial cable between the control RRC's COM1 and the PC. If using a USB to serial converter cable, make sure it is using an FTDI chipset.
     - note that if you also use the radio RRC's COM1, the pinout is not the standard straight-through serial port. Use the pinout description in the RemoteRig manual, or just try a null-modem cable which usually works (may need a gender changer).
     - the  serial setting for COM1 "Use USB Com Port as COM1" must be set to NO

- If using USB:
     - make sure that first Microbit Setup Manager is installed first on the control PC to get the drivers.
     - Then change the serial settings for COM1 to change "Use USB Com Port as COM1" to YES
     - connect the USB cable between the RRC and computer and wait for the drivers to finish installing
     - go to the Windows Device Manager and look at which virtual serial port was assigned to COM1 and use that for your software, taking the correct baud rate into account.

Note also that you can pull CAT data in parallel off of the radio RRC to use a PC on that end, or to sync with a remote device (amplifier, SteppIR, etc.)

Mitch DJ0QN / K7DX
General discussion forum / K3 twin with RRC issues
« Last post by on4iq on 2019-10-11, 18:57:15 »
Well i've been struggling to get a K3 twin setup running in the shack.
Here are the odd things:
- i am only able to get a k3twin working if the control side has the USB plugged into the RRC, i've have a 12v/4amp power adapter for it, but no USB plugged in means K3 switches off at radio side
- i am unable to get any cat data to com1, tried all possible serial choices (mode 6-7-11) but no cat data on the radio siden no cat data on control end

I tried cross, straight connection via breakout box, just in case cabling was wrong, still no result
Its an old RRC set , MkII though, but i'm starting to think the issue is in the RRC itself (the usb cable thing is weird)

Anyone experienced this.?

General discussion forum / Turn your rotor with Arduino
« Last post by Oz3sed on 2019-10-11, 11:35:09 »
I made an arduino program so I can rotate my rotors over remoterig.
So now you do not have to start the computer to turn - you can still run over the computer if you want.

Reley (Ardunio or computer) -> remoterig -> internet -> remoterig  -> (Easy-Rotor-Control (ERC) -> rotor.
- It is only made to control the Yaesu GS-232B
General discussion / Re: UDP cmd status = Error(0)
« Last post by ea3geo on 2019-10-04, 17:38:05 »
Hi all,

Thanks to the help of Mitch, DJ0QN, I've been able to resolve the problem.

Mitch suggested to use these settings:

- rx jitter size: 12
- rx jitter delay: 10
- packet size: 40
- buffer multiplier: at least 2

And this has just worked.

So I put the results for the reference of all OM's.

Tks Mitch!

73 ES GD DX DE EA3GEO, Daniel
Pages: [1] 2 3 ... 10