Many years ago, someone on another reflector posted a cheap way to make the equivalent of a Heil Proset. Radio Shack had the Optimus PRO-50MX boom headset, which was made by Koss, on sale. The mic and its round clamshell could be replaced by a Heil HC-4 and the Heil mic holder.
The received audio was said to be crisper/better than the Heil headphones. This was before the days of radios with TX EQ, so the only way to get communications quality audio was with a different mic. Now Heil doesn't sell the mic elements, though I still have spares. I did that, and it worked fine. I still have them but prefer a tighter headphone fit and usually use my Sennheiser HD 280 Pro headphones (no mic). I just found the original posting: http://lists.contesting.com/_cq-contest/1998-05/msg00080.html 73, Jim N7US -----Original Message----- Radio Shack used to sell these with a RS box, but labeled Koss on the phones. I have been using them for years, wore one out. And they sell replacement pads on their web store (Koss). Jim K0XU On Mar 15, 2012 10:51 PM, "Gary K9GS" <[email protected]> wrote: > An update: > > I stopped by the Koss Factory Store today. I looked at the SB49 first. > (The SB45 is identical to the SB49 but without the volume control in > the cord). I didn't really like the way the SB49 fit. It's a very > subjective thing but comfort was what I was looking for. The other > thing I didn't like was the flexible boom for the microphone was very > "whippy". It was almost like a wet noodle. Not good..... > > Next I looked at the SB40. The fit was great and very comfortable for > the 5 minutes I wore it. The mic boom was stiffer too. The SB40 has > a dynamic mic element. I ended up buying the SB40. The price was > $39.00 plus sales tax. > > I was all set to buy a Yamaha CM500 but I really wanted to see how > they fit first. I looked at a couple places and couldn't find a local > store that had the CM500. For this reason I look at Koss. The other > thing Koss has going for it is the limited lifetime warranty. Being > that I live near the factory this is a big advantage. Second is that > I've owned other Koss products and have always been very happy with them. > > As I said I've never used the Yamaha CM500 but the Koss SB40 looks > very similar. > > I'm also kind of a headphone junkie. With the K3 I figure that most > modern headsets have much more performance (frequency response, etc) > than one needs for communication. So they are all pretty much up to > the task. Same for the microphone. With the TX and RX Eq features of > the > K3 I decided to concentrate on fit and comfort. I think that juist > about any headset and microphone can be made to sound good. > > I haven't used the SB40's yet but will report back once I've played > with them a bit. Here's the link to the Koss website: > > http://www.koss.com/en/products/headphones/communication_headsets ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
