Well, the Heil Hospital page is for returning (at $12 or more) for them to repair. I couldn't find any parts on the site - It says to call them if it's not listed. Of course, they don't answer (actually, it's been busy for quite some time).
The RatShack 270-090 sure looks identical. I'll just run that. Thanks for the voltages. Now I know the old element was toast. Dan -----Original Message----- From: Gary Surrency [mailto:[EMAIL PROTECTED] Sent: Thursday, November 11, 2004 11:56 AM To: 'Dan Barker' Cc: 'CSinfo' Subject: WG4S: RE: [Elecraft] Anyone know how an MH2 works? Hi Dan, You might have a bad mic or mic connector or cable problem. The electret element in the MH2 draws very little current, so it should not load the 5V on the AF wire but slightly. I see about 1.7K to 1.5K to ground between mic pins 1 and 7 on two different MH2 mics I have here. On my KSB2, P1-5 has 5.0VDC without the MH2 connected, and 4.0VDC with it plugged in. Heil handles QC problems with their mics directly. If you need a replacement MH2, go to his website and fill out the Heil Hospital form and he'll take care of it asap. http://www.heilsound.com -- 73, Gary AB7MY ========= [EMAIL PROTECTED] Elecraft Technical Support -----Original Message----- From: Dan Barker [mailto:[EMAIL PROTECTED] Sent: Thursday, November 11, 2004 4:47 AM To: Gary Surrency Subject: FW: [Elecraft] Anyone know how an MH2 works? Can't believe I've stumpped the list<g>. Actually, I just got impatient. Does it look to you as if I need a new element? I'm not familiar with condenser elements but mine appears to be a dead short. Dan -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Dan Barker Sent: Wednesday, November 10, 2004 7:36 PM To: Elecraft Subject: [Elecraft] Anyone know how an MH2 works? Mine doesn't. I NEVER use SSB, but I'm sure I tested the MH2 when I built my KPSK2 ssb adapter. Anyhow, at pin5 of the KSB2, no mic, I have 5v (10K pull up). With the mic plugged in, it's 0v. Is that right? Pulled the mic apart. No shorts, all lines ring out. The element looks to my DMM to be a dead short. Is that right? Millampmeter inline with a 11K pull-up and a 9v battery shows .7 ma. Is that right? Oh, yes. Whistling into it makes no wiggles on the o'scope. Dan / WG4S / K2 #2456 _______________________________________________ Elecraft mailing list Post to: [email protected] 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 -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.289 / Virus Database: 265.2.1 - Release Date: 11/10/2004 -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.289 / Virus Database: 265.2.1 - Release Date: 11/10/2004 _______________________________________________ Elecraft mailing list Post to: [email protected] 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
