Hi John - the front panel message " FP.H b1 A5 " really is FP. (means Front Panel Mic Connection) H (means "high" sensitivity) and the b1 A5 is just an attempt to write the word "bias" within the limitations of the LCD display! That is b = b, 1 = i, A = a, and 5 = s. You are not the first one to be confused with the b1 A5! This means that you have "bias" turned on and that is why you are hearing a noise from the mic. Turn "bias" off - this is done by tapping either the "1" or the "2" (not in front of radio right now) when you are in this menu mode. You might want to consider updating to the latest firmware.
Have fun es gud dxing -- Don N4HH K3/100 #83 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of VE3NFK Sent: Sunday, April 27, 2008 3:15 PM To: [email protected] Subject: Re: Re:[Elecraft] K3: R-MH2 mic problems Hi I have sn 709 - I have my Heil HC4 from my TS-2000 8 pin conn - when I plug it into the K3 - I hear noise from the MICROPHONE??? The 'manual' says: " to select front or rear panel microphone AND to turn BIAS on/off, use the MAIN:Mic SRC menu entry.. My firmware 1.78 only shows: MIC SEL FP.H b1 A5 and I have not figured out how to adjust it - the main VFO knob also gives me a choice of rP.H and LInE In .. On a separate note - I have this anomaly that I emailed support on Friday night: "Managed to 'lock-up' my K3 - NO buttons work - including power - had to pull the power plug.... going thru the config menu - at PTT-KEY both ' OFF-OFF' tried to change values and complete lockup Completely repeatable - go to config PTT then move main vfo control and lock up. Was on AM 13840 listening to a SW station/ Changed mode/freq - still does it - as soon as main VFO adjusted. " Any advice/help comments? tnxs John VE3NFK Gary Hembree wrote: > > This is a known problem with the Rev B front panel artwork. I had the > exact same problem with a MH2 mike when I first used my K3/100 SN 729 a > week ago on 6 meters to contact a local friend who is a well-known VHF and > HF DXer and contester. Unfortunately it did not make a good impression! > There is a ground trace missing from one end of C98 and C97 on the front > panel board. These capacitors are associated with the mike bias circuit. > Hence the problem with the MH2. I am told that an official Elecraft fix > is going to be released this coming week. Several of us who noticed this > problem were given the fix to try and it worked three out of three times. > If you must use a mike that needs bias then use the rear panel connector > for now (i.e. Elecraft or Icom Proset). MH2s are excluded of course, > unless you have an appropriate adapter. 688 is the earliest SN that we > know is affected. The other three were 690, 728 and 729. Elecraft is > fixing front panel boards now before they ship anymore. > 73 > Gary, N7IR > _______________________________________________ > 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 > > -- View this message in context: http://www.nabble.com/K3%3A-R-MH2-mic-problems-tp16917192p16927355.html Sent from the Elecraft mailing list archive at Nabble.com. _______________________________________________ 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 incoming message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.5/1400 - Release Date: 4/27/2008 9:39 AM No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.138 / Virus Database: 270.6.5/1619 - Release Date: 8/18/2008 5:39 PM ______________________________________________________________ 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
