Re: [Elecraft] MH-2 and Boomset Problem
Hi Don, This is much more complex than I originally thought! The BM-10 was purchased with adapters for an Omni 6 (4-pin) and a Yaesu 817 (RG-xx). The pads are black and it has the HC-5 element. The cord coming from the boomset has a connector that takes either above adapter, or, it can go directly into the K2 mic connector. The headset only had BM-10 shown as its model number. All this discussion may be why I only do about 20 SSB Q's/yr on HF! Now in the VHF rover I do 1000+/yr, but we the Yaesu hand mics that came with the rigs. Thanks, Mark K2QO Don Wilhelm wrote: Mark, Still not enough info - BM-10 is a Heil number, not an Elecraft number, and there are 3 models of the BM-10 - one with the HC-4 element, one with the HC-5 element and one with an electret element for Icom. Are the pads blue, red, or black? The above info is only for starters - these mics are sold by Heil for specific rigs and vary in the wiring at the plug, so you must also know which transceiver it was originally intended for. If I had to guess, I would say that your BM-10 is wired for the Yaesu which uses pin 6 for PTT, and when you connect it to the K2 and press the footswitch, you are shorting the K2 +5 volts pin (6) to ground. Heil refers to the Yaesu BM-10 as BM-10-Y, but I don't know whether that is simply ordering info or if that number is imprinted on the mic. 73, Don W3FPR -Original Message- From: Mark Adams [mailto:[EMAIL PROTECTED] Sent: Monday, February 13, 2006 10:41 PM To: [EMAIL PROTECTED] Subject: RE: [Elecraft] MH-2 and Boomset Problem Don, the Elecraft mike is the HM2 hand mike and the Heil boom set is the discontinued BM-10. It's a smaller version of the full size Pro Set. Is this enough to answer teh question? 73, Mark K2QO Quoting Don Wilhelm [EMAIL PROTECTED]: Mark, Just saying 'Heil boom set' is not sufficient information to tell me which mic you actually have. Is it the Elecraft MD2? Is it the Heil ProSet (if so, which one of these is it)? If the mic was made for use with an Elecraft or an Icom, then it should have an electret element in it, but if it has the Heil HC4 or HC5 elements, it is a dynamic mic element and does not need voltage applied to it. Let us know what you really have and perhaps we can help. 73, Don W3FPR -Original Message- This should be and easy one. I have a K2, SN543, loaded with all updates and firmware but no 100W. I've used the HM-2 with for a couple of years for a couple dozen SSB contacts. When I plug my Heil boom set in and key it with the foot pedal, the rig shuts off. Does the resistor on the back of the mic connector need to be removed to use the boom set? I actually just tried this yesterday. Never noticed that the Heil came with a compatible connector, no adapter needed. Mark S. Adams, P.E. Environment, Health Safety University at Buffalo 220 Winspear Avenue Buffalo, NY 14215-1034 Tel: 716.829.3707 ext 25 Cell: 716.863.7229 -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 267.15.6/258 - Release Date: 2/13/2006 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] MH-2 and Boomset Problem
Mark, The fact that the mic plug CAN plug directly into the K2 does not mean that it is wired correctly for the K2 - this is a problem with mics and the various mic pinout configuration that different manufacturers use. The Elecraft configuration is very much like the Kenwood, but it still differs by one pin (pin 5 vs. pin 6 for +5 volts). Be aware that the Heil HC4 and HC5 elements have much lower output levels than the electret type mics (those made for Icom and Elecraft are two examples of Electret types). My suggestion to solve your problem is to build an external pre-amp to bring the HC-5 element up to a decent output (about 6 dB gain is what I would suggest) and in the box where the pre-amp resides, you could make the input connector wiring to match your Yaesu wired microphone, and wire the output plug to match the Elecraft pin configuration. That way, you could attach the MH2 directly to the K2, but attach the BM-10 mic with the Yaesu adapter to the preamp and the preamp box connects directly to the K2. I can send you a schematic of the preamp I use (which allows the 5.6k resistor to remain wired in the K2) should you need one - send me a direct email, the reflector rejects attachments. Yes, it is more complicated than simply plugging in the mic, but your variety of transceivers that you intend to use the mic with creates complexity itself - the solution I suggested, once constructed removes the complexity. 73, Don W3FPR -Original Message- Hi Don, This is much more complex than I originally thought! The BM-10 was purchased with adapters for an Omni 6 (4-pin) and a Yaesu 817 (RG-xx). The pads are black and it has the HC-5 element. The cord coming from the boomset has a connector that takes either above adapter, or, it can go directly into the K2 mic connector. The headset only had BM-10 shown as its model number. All this discussion may be why I only do about 20 SSB Q's/yr on HF! Now in the VHF rover I do 1000+/yr, but we the Yaesu hand mics that came with the rigs. Thanks, Mark K2QO Don Wilhelm wrote: Mark, Still not enough info - BM-10 is a Heil number, not an Elecraft number, and there are 3 models of the BM-10 - one with the HC-4 element, one with the HC-5 element and one with an electret element for Icom. Are the pads blue, red, or black? The above info is only for starters - these mics are sold by Heil for specific rigs and vary in the wiring at the plug, so you must also know which transceiver it was originally intended for. If I had to guess, I would say that your BM-10 is wired for the Yaesu which uses pin 6 for PTT, and when you connect it to the K2 and press the footswitch, you are shorting the K2 +5 volts pin (6) to ground. Heil refers to the Yaesu BM-10 as BM-10-Y, but I don't know whether that is simply ordering info or if that number is imprinted on the mic. 73, Don W3FPR ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] MH-2 and Boomset Problem
Hi Gang, This should be and easy one. I have a K2, SN543, loaded with all updates and firmware but no 100W. I've used the HM-2 with for a couple of years for a couple dozen SSB contacts. When I plug my Heil boom set in and key it with the foot pedal, the rig shuts off. Does the resistor on the back of the mic connector need to be removed to use the boom set? I actually just tried this yesterday. Never noticed that the Heil came with a compatible connector, no adapter needed. Thanks, Mark K2QO K2 543 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] MH-2 and Boomset Problem
Mark, Just saying 'Heil boom set' is not sufficient information to tell me which mic you actually have. Is it the Elecraft MD2? Is it the Heil ProSet (if so, which one of these is it)? If the mic was made for use with an Elecraft or an Icom, then it should have an electret element in it, but if it has the Heil HC4 or HC5 elements, it is a dynamic mic element and does not need voltage applied to it. Let us know what you really have and perhaps we can help. 73, Don W3FPR -Original Message- This should be and easy one. I have a K2, SN543, loaded with all updates and firmware but no 100W. I've used the HM-2 with for a couple of years for a couple dozen SSB contacts. When I plug my Heil boom set in and key it with the foot pedal, the rig shuts off. Does the resistor on the back of the mic connector need to be removed to use the boom set? I actually just tried this yesterday. Never noticed that the Heil came with a compatible connector, no adapter needed. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
