RE: [Elecraft] Anyone know how an MH2 works?
or was it How to set up SSB. Anyhow, I did everything I thought I should. I heard an OM saying CQ on 40, and I went back with a request for an audio report, and again, I get Horrible. Not much help. Summary: Mic element went south (I know it worked 2 years ago). I never got an answer from Heil about a replacement element. Gary (Elecraft) says Heil handles mics, not Elecraft. The RadioShack 270-090 appears identical to the MH2 element, and appears to work (At least the o'scope draws pretty pictures). So, to determine the nature of my horribleness, I need to monitor my transmissions. To that end, I threw together a 40m DC receiver. I transmitted into my dummy load and listened to the monitor receiver on headphones. That doesn't work. You can't tell anything on headphones when you are doing the talking. I set up the monitor receiver to record on my laptop, tuned some rag chewers on 40, found them on the K2, and pressed record. After about 15 seconds of traffic, I switched the K2 to the dummy load and started talking (Kind of a seriously cross-mode qsyg). Playing back the recording, both the OT's in Illinois and I sounded fine. So, back on the air. Now my audio reports are Horrible. There's not enough drive with SSBa on 1, so I think 2 is the way to go. SSBc maybe should be 1:1, but it sounded better to me at 2:1. Of course, the issue may simply be I have no idea at all how to zero beat SSB. I think my next step will be a sched with someone who has a clue (I sure don't) and a while to spend. We can move the bfo's around, or maybe even definitively say my mic element sucks. Another choice (getting more attractive all the time) is stay under 7150 Kcs. Dan / WG4S / K2 #2456 Extreme Northwest Georgia. ___ 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
FW: [Elecraft] Anyone know how an MH2 works?
Hearty thanks to Jim; K4ZM. He said I sounded tinny and to read back my BFO settings. The freq was reasonable but the bandwidth was 2,200 hz. That ain't right! Using OP1 really helps! I paid good money for the SSB filter, might as well use it for transmittingg. I have NO IDEA how it got from OP1 to 2.2, but there must have been a firmware upgrade or a reset somewhere in the last 2 years. Live and learn, and again - Thanks Jim. Dan / WG4S / K2 #2456 ___ 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
FW: WG4S: RE: [Elecraft] Anyone know how an MH2 works?
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 listg. 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: 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 -- 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: 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: FW: WG4S: RE: [Elecraft] Anyone know how an MH2 works?
Dan, If you can't get through to Heil we will certaily handle it. Contact Scott at [EMAIL PROTECTED] and he will get you a replacement and have you send the old one back to him for evaluation. 73, Eric -- Dan Barker wrote: 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). Dan ___ 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] 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: 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
