Dick, Thanks for that added information. BTW, most hams do not realize that one must be very specific when saying you are using a Heil microphone. With all the microphone and adapter combinations possible, things get quite confusing. Everytime someone sends me a K2 for repair and tells me he is using a Heil microphone, it results in several email exchanges before I understand the microphone setup enough to test the SSB adapter as the owner would use it.
Never mind the situation where someone buys a used K2, sends it to me for updates and alignment/calibration and wants to use some Heil microphone with it - I need precise information about the microphone and the adapter, and often the owner does not know, so I have to ask many questions to get it straight. 73, Don W3FPR On 2/24/2012 7:02 PM, Dick Dievendorff wrote: > http://heilsound.com/amateur/products/headphone-adapters/index.php > > Some Heil ICOM adapters have DC blocking capacitors. These are adapters like > the AD-1-I. I've used these when I had ICOM equipment, and I have a few > lying around here. > > Some Heil ICOM adapters are designed for microphones that require bias, > including Heil's "iC" series. These are adapters like the AD-1-iC. These > don't have a blocking capacitor. > > Heil says the Kenwood (AD-1-K) and Yaesu (AD-1-Y) adapters never contained > DC blocking capacitors. Therefore if you use the AD-1-K for an Elecraft rig, > you choose bias or no bias depending on the K3's microphone configuration > setting. > > I didn't intend to make any claims about ICOM-specific adapters or > microphones in the note - I only wanted to determine if any AD-1-Ks had > blocking capacitors. Bob said they didn't. > > This means (to me) that I should be able to use Heil's AD-1-K for my > Elecraft K3 for any microphone that has a 3.5 mm plug, whether or not that > microphone requires bias, and the K3's configuration menu sets it up > appropriately. If I had learned that some AD-1-K microphones had blocking > capacitors (and I've seen that stated), then I'd be more careful about > recommending the AD-1-K. > > Dick, K6KR > ______________________________________________________________ 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
