Wednesday, December 19, 2007

TS-2000 Remote Control w/ Audio


One of the fun but also useful capabilities to have in your shack is the ability to run your rig remotely. I decided to do this for my Kenwood TS-2000 since it's basically a radio wrapped around a computer and has a zillion interface options. Kenwood makes ARCP-2000, a remote display program which frankly isn't worth the $250 they ask for it. Ham Radio Deluxe (aka HRD) is a great program; it's feature-rich, highly configurable, and best of all free. You can run it over a screen-scraper like VNC, Remote Desktop, or even X-Windows. A better solution is to use the HRD remote access system; this essentially allows you to tunnel serial data to your rig and control it via a remote instance of HRD.

Two challenges exist here; publishing the HRD server over the Internet without open router firewall ports, and creating a high-quality and stable audio path.

Dealing with the server question first; I absolutely do not recommend opening holes in your firewall. There are a lot of solutions available which eliminate that need. I use Hamachi which has an additional benefit in that the clients are coordinated via a central server so a static DNS is not required. I simply point my remote HRD instance at the private IP assigned to my home system by Hamachi and I'm connected.

Getting quality audio across the Internet used to be a challenge, but after using Skype this year for business I think it's ready for prime time. I created a separate Skype client ID intended only for receiving inbound calls from me when I'm remote. I set Skype to auto-answer, and point the audio paths to my rig's sound interface.

Detailed diagram of my setup is available here.

Monday, November 19, 2007

Public Speaking: Wireless Connections 2007


It's been a busy time over the last few months. I attended the Texas Wireless Summit in Austin, then WCA shared a booth at CTIA with some other groups; WIPConnector, WINBC, and the Austin Wireless Alliance. Made a big push to produce our 700 MHz analyst panel event, and to complete a report due for one of my clients. Then I headed off to Banff in Alberta for Wireless Connections 2007. I was invited to speak at the conference, and it was a great show. Loved the location; the Fairmont Banff Springs. I spoke about the cultural aspects of living and working in the Silicon Valley. I think the talk went well based on feedback from attendees. I'm looking forward to seeing a few of the Alberta folks down here in the Valley on Nov 27th at our Mobile OS panel event.

Friday, September 14, 2007

Moronic DIY Electricians


After the CHA250B antenna install I was doing some cleanup work on the roof. Went to ground the mast and noticed a bit of a tingle on my hands when I was holding the mast and touched the ground wire. I put my trusty Fluke multimeter on there and was amazed to find about 74 VAC on the mast! No current to speak of, which accounts for the fact that I didn't get zapped off the roof, but enough to feel it when barely touching the ground wire.

I headed back inside to do some testing. Poking around my shack, I discovered that some of the AC outlets had reversed hot/neutral wiring!! The only thing that saved me from destroying my gear (or myself) is that thankfully I'd never used a correct outlet and an incorrect outlet at the same time for anything that was connected. (e.g. computer on one and rig on the other.)

I'm annoyed beyond belief that the previous owner of my house did this. The real kicker is that he was also a ham. I suppose I shouldn't be surprised, because this isn't the first electrical oddity I've found in this house. Apparently Mr. Fixit fancied himself quite the handyman. I'm not going to name names here, but he's the moron that after 5 years still hasn't updated his license address in the FCC database.