I have been experimenting with remote operation of my K2 using the Internet for control and audio. So far I tried using VNC and WINDOWS Remote Desktop for connecting from my client computer to the remote station. Both basically worked, but have had reliability issues. Today I tried a new approach – a program called TeamViewer.
I first heard of TeamViewer from another Ham. I told him I was thinking about remote operation. He was planning to do the same, and told me he was going to use TeamViewer. TeamViewer is free for non-commercial use. I downloaded it on the Host and Client PCs, started it, and voila – a connection with no hassles. No Firewall problems, no using Skype for audio seperate from the remote desktop application, etc. I am in the first hours of trying this, but it could not hvae been easier so far.
Here is a screenshot, using HRD. Of course this just shows a screenshot of HRD, but I am using TeamViewer to operate it.
The overlay in the lower right corner is for control of the connection and audio. It can be minimized to allow a full view of the HRD screen. If my initial attempt with TeamViewer is any indication of its utility and reliability, I will be using it for all my remote applications.
I don’t want to overlook HamRadio Deluxe. This is the only application I have used so far for remote radio control of the K2. There are some K2 functions that are not available with HRD, but overall it is a great program. No problems since the day I installed it.
At this point I think I have a complete remote operation capability using only free software and an old laptop PC. Now on to transmitting. The only barrier to transmitting is getting the three-minute timeout timer in place. This provides the ability to power-off the rig if it gets stuck in Transmit mode, and is required by the FCC for remote station control.
Kg3v Ham Radio Blog 
Hi,
I have also trid to connect my rig remote with Teamviewer but I had som trouble with audio quality. In my experience there was not possible to hear the stations received. It was more like a huge pile-up/noise. I dis use verion 5 of Teamviewer but has not testet the latest version. Did you have to do any tweaks or something to get good audio quality?
73 de LA1HKA Eirik
Hi Erik,
I have had pretty good luck with the audio headphone jack from the radio connected right into the sound card. It is not perfect, but it is good enough that I could use it as-is. I plan to add a transformer interface for isolation, then I will tweak the levels to try to get it even better.
hi how did you hook up the audio and tx ability i have teamviewer on a ft-2000 and xp computer, i can hear very good using the headphone to soundcard but getting audio to the rig is not working too well. 73
I connected the audio from the computer sound output through an isolator to the mic input of the rig. You need to reduce the sound level a great deal before it goes to the rig input. There are many interfaces out there for doing this. There are interfaces out there for using computer sound cards on Digital Modes. Those interfaces do the necessary audio level reduction for feeding PC audio to the mic input. I used one made by a VE7 Ham but can not remember the whole callsign.
I have used two approaches with the sound. I used Skype for awhile and that worked pretty well. Teamviewer now has Audio capability integrated and I have also used that. I have not been active remotely for a couple months, but I hope to get the remote setup reactivated in the next couple weeks.
I tried Team Viewer, but cannot find a way to switch the Rx audio on. Ver 14. Any suggestions. Bill vk4xz
Bill, I don’t have exact instructions, but it works. Sound on WINDOWS is always frustrating. You have to make sure you have the correct device selected on the computer/OS and in TeamViewer. There is an AUDIO SETTINGS item on TeamViewer (on the TAB at the lower-right of the screen). That may be where you need to start. Sorry I can’t be more specific.