Recent Posts

11

Configuration, RRC 1258 / Win4K3 lag in Twin mode with RRC1258 (works fine with RRC Micro and flrig)

« Last post by ha5atp on 2026-04-20, 14:42:11 »

Hi,

I’m looking for some advice regarding CAT performance when using an Elecraft K3 over RemoteRig RRC1258 in Twin mode with a PC-based control setup.

Setup:

Remote side: Elecraft K3 + RRC1258 (Radio unit)
Control side: RRC1258 (Control unit) + PC
Using Win4K3 for control (no physical K3/0 or K3/0 Mini)
A minimal Python script is used to emulate K3/0 presence (responding to PS;)

Observed behavior:

Win4K3 does connect and CAT communication is working
However, VFO tuning is very slow and jerky
PTT is delayed
In practice, the system is almost unusable due to the lag

Important comparison:

Using the same setup with RRC Micro → Win4K3 works perfectly (no lag at all)
Using flrig on the same RRC1258 CAT port → also completely smooth and responsive

So CAT itself is working correctly through the RRC1258, but Win4K3 becomes very laggy in this configuration.

Network latency is low and stable.

Question:

Is this behavior expected when using RRC1258 Twin mode without a physical K3/0 control head?
Is there any known difference in CAT handling between RRC Micro and RRC1258 that could explain this?
Are there specific RRC settings (COM mode, buffering, timing, etc.) that could improve responsiveness?

Additional info:

RRC COM2 mode: Mode-7 (CAT to COM2)
Baud rate: 38400 (same across K3, RRC and PC)
Firmware: (can provide exact version if needed)

Any insight from users running similar setups would be greatly appreciated.

Has anyone successfully used Win4K3 in Twin mode without a physical K3/0? 

73,
HA5ATP

12

General discussion forum / 1216H webswitch

« Last post by KP3N on 2026-04-19, 00:25:18 »

Having som issues with my webswitch.  One of my computers, when I try to access the relay buttons the webpage shows an icon of a paper with a sad face and below it says the address didn;t send any data.  It works fine on all other computers.  Am I missing a plugin on my browser or something.  Thank for the help.

13

General discussion forum / Re: K3/0 lockup

« Last post by HB9BJL on 2026-04-17, 12:06:07 »

Dennis,

beep and Term means that no connection from the K3/0 to the K3 is available.

I have a working K3/0 and K3 setup. I haven't posted the K3 sceenshots on

www.qsl.net/hb9bjl/

yet, but I can do it as soon as time permits.

The Baud rate of the control and the radio unit may be changed by remote access, they must be the same.
On my units, the COM0 baudrate is: 38400 / data bits: 8  / stop bits: 1 / parity: 0 - Off / Com0 Program mode 3 char timeout: 2,
only on control unit: use USB Com Port as COM0: No.

The baud rate on the K3 itself cannot be changed remotely, so try all possible baud rate values, submit and apply changes.

If you have downloaded working both configuration files, you can select in the menu
"import settings from file..."

This works also over remote access.

73 de Christian
HB9BJL
W9BJL

14

General discussion forum / Re: Audio problem

« Last post by Mitch on 2026-04-17, 12:02:49 »

Hi Christian

Thank you for your reply, I did notice your post and followed Radio side and control. All port forwarding looks Ok within router and connects fine just audio and power.

Also had a look and rewired the jumpers within both boxes hoping it maybe this was causing the problem with no joy yet.

Hope to try get back to the radio sode when i get home over the weekend. Again many thanks for your help.

73 Gary

15

General discussion forum / Re: Audio problem

« Last post by HB9BJL on 2026-04-17, 11:46:00 »

Hi Gary

have a look at

https://www.qsl.net/hb9bjl/

and check the ports and the forwarding of both radio and control units on your router.
My setup works fine.
I have posted some screenshots for the TS-480 setup.

What is your callsign ?

73 de Christian
HB9BJL
W9BJL

16

Configuration, RRC 1258 / K3 Twin Mode with RRC-1258 – CAT not working without K3/0 (COM port in use)

« Last post by ha5atp on 2026-04-12, 20:48:40 »

Hello everyone,

I would like to ask for help from someone experienced with RRC setups, especially with Elecraft K3 Twin mode.

I have recently joined a group sharing a remote station. The remote side setup is:
Elecraft K3 + RRC-1258 + K3/0 (Twin mode).

Previously, I successfully used an RRC-Micro + Win4K3 setup.

Now I have purchased an RRC-1258 control unit. I can establish the SIP connection and audio is working, so the basic connection is fine.

However, I cannot get CAT control working between Win4K3 and the remote K3.

I understand that in Twin mode this is not a simple CAT passthrough, but involves K3/0 protocol handling.

On the PC side, I see multiple Microbit virtual COM ports (COM3/4/5). However:

Win4K3 reports the COM port as "in use"
Serial terminal access is blocked when Win4K3 is running
When the port is free, I do not see expected CAT traffic 

From what I understand, the RRC expects responses from a local K3/K3/0 (for example PS; commands), and without these responses the remote side eventually drops or shuts down.

I was also provided with a Python script that emulates responses (PS1;), which suggests that K3/0 emulation is required in this setup.

For reference, my RRC firmware version is 2.7.1 with bootloader version 1.9.

My question is:
What is the correct way to provide CAT control for Win4K3 in K3 Twin mode when no physical K3/K3/0 is present on the control side?

Any guidance on correct COM port usage, routing, or required emulation would be greatly appreciated.

Thank you in advance!
Vy73! HA5ATP

17

Configuration, RRC 1258 / Re: Need to setup new configuration on both units

« Last post by SV1DPI on 2026-04-08, 09:27:10 »

Hello Dimitris!
You need to forward the ports in radio's router. Additionally you need to use a ddns or something similar to radio's router if you have a dynamic ip. Feel free to send me an email to sv1dpi@gmail.com for further help as I don't monitor frequently the forum...

18

General discussion forum / RTP/UDP audio status: "Stalled (12)“

« Last post by k4fn on 2026-04-05, 00:36:41 »

I am providing this info after searching these forums for ops with the same problem.

My Internet provider AT&T installed a new BGW320-500 MODEM that was not compatible with my Microbit RRC-1258 remote system. After 1-1/2 weeks of troubleshooting they re-intalled the original BGW210-700 MODEM model and everything started working again.

Dan  K4FN

19

Configuration, RRC 1258 / Re: RRC1258 on Wifi 7 router - won't connect to Wifi

« Last post by N6MEH on 2026-04-01, 02:12:52 »

Responding to my own thread, but I believe I've found the answer:

The hardware in the RRC1258 only supports 802.11B. It does not support 802.11G. The issue with WiFi 7 is that they phased out the old WPA-based security for networks and replaced it with requiring a minimum of WPA2. The wireless card in RRC1258 does not support WPA2. It is constantly failing out trying to use old-style WPA connectivity on the new router. I found a bunch of "mismatched authorization packet" errors in the router logs after enabling additional logging to support this conclusion. 

As far as I can tell, the only way to connect a RRC1258 to a Wifi 7 network is:
1) Don't run Wifi 7 at all so that you can keep running WPA
2) Run the ethernet jack on RRC1258 to a wireless bridge that supports a later version of the Wifi standard

It isn't a great option, but until and unless RemoteRig releases an updated device that has better Wifi support, this is about all there is.

There are several companies that make Wifi 6 and Wifi 7 bridges, so luckily the needed parts seem to be easily available.

20

Configuration, RRC 1258 / RRC1258 on Wifi 7 router - won't connect to Wifi

« Last post by N6MEH on 2026-03-31, 06:13:11 »

Hello,

Has anyone gotten a RRC1258 to work on a Wifi7 network? I've updated my network router to an Asus ZenWiFi BQ16 Pro. Everything else in my network (including 40+ IoT devices) are working fine, but the RRC client device won't connect.

It finds the network when using "network scan", but when telling it to connect, it just blinks the green LED. I didn't change the network name or WPA password when updating the router.

Is there a way to check the logs in the device to determine why it isn't connecting ?

Is there a known issue with Wifi 7 where some setting in the router needs to be changed? I've included the settings as attachments to this post.