[Elecraft] Let me build you K2
I have built 90 K2's to date. Let me build one for you. My rates are reasonable and you receive a new radio ready to play. 73 Alan W1HYV ___ 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] MH2 Microphone Discontinued
Hello All, After leaving the Elecraft booth at Dayton with my K2/100/SSB/ATU (SN-004935), DL-1, BL-1 in hand with the understanding that the Heil hand mic was discontinued, I stopped at the Heil booth and asked them what might work. There I was told that a mic with the Icom element and a Kenwood connector will work. Also they confirmed that the MH2 was no longer available. I ended up purchasing a Traveler boomset for Kenwood because I was informed that all of the Travelers have Icom elements and only the connectors are different. I realize that this doesn't directly address the hand mic issue but perhaps it could help with some homebrewing. 73 Mike Warner N3XPD PS, As soon I clear a workable area on my bench, construction of the K2 will begin. Eric Swartz - WA6HHQ, Elecraft wrote: Heil discontinued the hand mic. Yes, we are working on a new one, but it will be a little bit before we get them to market. 73, Eric Paul Saville wrote: The MH2 is now listed as discontinued. Will there be an Elecraft-branded replacement for those who don't fancy pop star type microphones? 73 Paul ZL3IN ___ 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 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: 7.0.322 / Virus Database: 266.11.17 - Release Date: 5/25/2005 ___ 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] Heil handmike discontinued.
Heil discontinued the hand mic. Yes, we are working on a new one, but it will be a little bit before we get them to market. Which leads to the question: why? Some of us who already have one may wonder what's wrong with it BartW. ___ 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] re: Heil handmike discontinued.
I sure like my MH2 (athough it rarely gets any action). I guess it's value just went up ;) not for sale! I can't imagine how it could be improved. No it's Ken Lotts aa7jc -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of pa3gyu Sent: Friday, May 27, 2005 5:12 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Heil handmike discontinued. Heil discontinued the hand mic. Yes, we are working on a new one, but it will be a little bit before we get them to market. Which leads to the question: why? Some of us who already have one may wonder what's wrong with it BartW. ___ 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 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] on air SSB filter alignment
Other hams say my USB sounds tinny, lacking in bass, on 20 meters, that's the band I'm on these days. On spectrogram, the received audio curves look great. What is the process for on air adjusting of the filters for better transmit audio? Is this process archived somewhere? Thanks, Howard __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ___ 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] KX1 #1116 lives!
I read the list avidly but post very rarely. I had to post, though, to announce the birth of KX1 #1116. The basic rig is completed and in fine working condition. All options are on the bench and waiting for solder. I haven't had the opportunity to make a maiden contact yet but I'm seeing a little more than 3 W at 14.100 MHz and a little more than 4 W at 7.100 MHz on a dummy load running from 13.8 V. The only thing I notice is that receive sensitivity seems a little lower on 20 meters than on 40, although that could have more to do with the antenna I was using than the rig. It was a full-wave 40-meter loop plugged straight into the rig, i.e. no ATU. Once again, I thank everyone at Elecraft for a fine product and an enjoyable building experience! 72, David, AD2A Glen Rock, NJ ___ 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] on air SSB filter alignment
Howard, You said the receive audio curves 'look great' - but are they at the proper frequencies? What is the audio frequency shown in Spectrogram at the -3dB points of the USB passband? In my experience, the low end should be somewhere near 300 Hz. Also be certain that this is the passband for the FL1 filter - that is the only BFO setting used for transmit - you can set FL2 thru FL4 anywhere you want for receiving. Also be certain FL1 is set to OP1 and not the variable filter. If you have the 2.3 kHz filter bandwidth, set markers (pointers) in Spectrogram at 300 and 2600 Hz and center the passband between those markers. (300 and 2300 markers for the older 2.0 kHz filter). Could it be that you are 'netting' the K2 to a certain frequency rather than listening to the other signal and tuning for the best audio? - if you are relying on a particular net frequency shown on the K2 dial, it could simply be that your dial calibration is off. See my website www.qsl.net/w3fpr or the mirror at http://home.earthlink.net/~w3fpr for detail information on setting the K2 dial calibration. To adjust 'on the air', you should use a second receiver, being careful not to overload it, and feed the K2 into a dummy load. If you can record the output of the receiver you can better evaluate the voice response. Determine whether the audio is too high or too low and then use the receive Spectrogram display to shift the passband a bit up or down as required and repeat the testing process - continue until satisfied. 73, Don W3FPR -Original Message- Other hams say my USB sounds tinny, lacking in bass, on 20 meters, that's the band I'm on these days. On spectrogram, the received audio curves look great. What is the process for on air adjusting of the filters for better transmit audio? Is this process archived somewhere? -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.322 / Virus Database: 266.11.16 - Release Date: 5/24/2005 ___ 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] KX1 #1116 lives!
David, Great job! I have my KX1 (#1125) currently under construction, and I hope to finish the basic build this weekend. I am presently finishing up the receiver assembly. Good DX to you with your new rig. Matt - K7OE -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Friday, May 27, 2005 6:50 AM To: elecraft@mailman.qth.net Subject: [Elecraft] KX1 #1116 lives! I read the list avidly but post very rarely. I had to post, though, to announce the birth of KX1 #1116. The basic rig is completed and in fine working condition. All options are on the bench and waiting for solder. I haven't had the opportunity to make a maiden contact yet but I'm seeing a little more than 3 W at 14.100 MHz and a little more than 4 W at 7.100 MHz on a dummy load running from 13.8 V. The only thing I notice is that receive sensitivity seems a little lower on 20 meters than on 40, although that could have more to do with the antenna I was using than the rig. It was a full-wave 40-meter loop plugged straight into the rig, i.e. no ATU. Once again, I thank everyone at Elecraft for a fine product and an enjoyable building experience! 72, David, AD2A Glen Rock, NJ ___ 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] Heil handmike discontinued.
Probably nothing other than low sales volume. I think most hams equate hand mike = cheap mike. OK for mobile work, but not in the shack. So a premium hand mike is probably not going to be a big seller for any vendor. I have a drawer full of hand mikes from all the rigs I've bought over the years that advertised Mic Included!. I wonder if a guy could just buy the Heil-Icom element and stuff it in one of the thousand Kenwood hand mikes available at every swap meet? Anybody had any experience with that? Eric KE6US -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of pa3gyu Sent: Friday, May 27, 2005 5:12 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Heil handmike discontinued. Heil discontinued the hand mic. Yes, we are working on a new one, but it will be a little bit before we get them to market. Which leads to the question: why? Some of us who already have one may wonder what's wrong with it BartW. ___ 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 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] Heil handmike discontinued.
- Original Message - From: EricJ [EMAIL PROTECTED] To: 'pa3gyu' [EMAIL PROTECTED]; elecraft@mailman.qth.net Sent: Friday, May 27, 2005 10:26 AM Subject: RE: [Elecraft] Heil handmike discontinued. Probably nothing other than low sales volume. I think most hams equate hand mike = cheap mike. OK for mobile work, but not in the shack. So a premium hand mike is probably not going to be a big seller for any vendor. I have a drawer full of hand mikes from all the rigs I've bought over the years that advertised Mic Included!. I wonder if a guy could just buy the Heil-Icom element and stuff it in one of the thousand Kenwood hand mikes available at every swap meet? Anybody had any experience with that? Eric KE6US I was told by a friend that the K2 prefers a 600 ohm mic and that a electrec mic element wouldn't sound right. I've got both - an old Cobra (label removed) CB 600 ohm dynamic and a boom headset salvaged from a cell phone (2.2k). I'm not able to test either right now as my K2 has no SSB audio output. PTT VOX work but no audio. :-( I emailed Elecraft support and am waiting on ideas where to look for the trouble. I'll get it working and get reports on both mics. I'll let ya know. Ken -- Just my 2¢ worth... 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #1055, Digital On Six #350, Proud builder owner of Elecraft K2 #4913 -- Checked by AVG Anti-Virus. Version: 7.0.322 / Virus Database: 267.0.0 - Release Date: 5/27/2005 ___ 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: RE: [Elecraft] Heil handmike discontinued.
For HF I don't use a hand mic anymore. Instead I use the Heil BM-5 headset. Solves a few problems. I don't like to use an external speaker for HF mobile as there is so much road noise and band noise it is difficult to copy weak signals. The headset is definitely the way to go to improve the local signal to noise ratio. Also reduces noise for passengers who may not have an interest in listening to the HF noise either. This situation is completely different than a VHF/UHF rig used on FM which doesn't have the same local s/n issues. Only problem I still have is that I need a PTT switch or use VOX. I don't like to use VOX because if I have passengers in the vehicle or accidentally use an explative due to some other bad driver nearby I don't want to transmit. For PTT I put a momentary pushbutton in a pill bottle. Would be cool to mount it to the gear shifter directly, but I just hold onto the pill bottle. Also found headsets a great asset for contesting as well. I doubt I'll ever use hand mics again on HF! Mark, NK8Q K2 4786 From: EricJ [EMAIL PROTECTED] Date: Fri May 27 10:26:47 CDT 2005 To: 'pa3gyu' [EMAIL PROTECTED], elecraft@mailman.qth.net Subject: RE: [Elecraft] Heil handmike discontinued. Probably nothing other than low sales volume. I think most hams equate hand mike = cheap mike. OK for mobile work, but not in the shack. So a premium hand mike is probably not going to be a big seller for any vendor. I have a drawer full of hand mikes from all the rigs I've bought over the years that advertised Mic Included!. I wonder if a guy could just buy the Heil-Icom element and stuff it in one of the thousand Kenwood hand mikes available at every swap meet? Anybody had any experience with that? Eric KE6US -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of pa3gyu Sent: Friday, May 27, 2005 5:12 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Heil handmike discontinued. Heil discontinued the hand mic. Yes, we are working on a new one, but it will be a little bit before we get them to market. Which leads to the question: why? Some of us who already have one may wonder what's wrong with it BartW. ___ 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 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 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] on air SSB filter alignment
Howard wrote: Other hams say my USB sounds tinny, lacking in bass, on 20 meters, that's the band I'm on these days. On spectrogram, the received audio curves look great. What is the process for on air adjusting of the filters for better transmit audio? Is this process archived somewhere? --- Are you looking at FL1 on Spectrogram? FL1 is the ONLY filter/BFO setting combination used on transmit, regardless of which filter you have selected for receive. Still, as the Elecraft SSB module manual says, the final adjustment of your BFO setting often must be done by listening to your signal. Spectrogram gets you in the ball park, but it's not always close enough. The stock K2 SSB filter is intentionally a very narrow filter. It's just about 2 kHz wide. That's wide enough for excellent intelligibility while being as narrow as possible for the greatest punch. The narrower the bandwidth, the greater the signal-to-noise ratio. But the narrow bandwidth requires very careful adjustment of the BFO frequency, and it should be checked with the mic you are using and, preferably, with your voice. Tinny suggests that the bandpass is too far from the suppressed carrier, cutting off too many lows. One excellent way to check your signal is to transmit into a dummy load while monitoring your signal on an auxiliary receiver. You'll want to record your voice since it's impossible to hear what you really sound like on the air while talking. There's too much bone conduction in your head that fills in spectrum that many not be coming through the rig for your to be able to tell accurately what other operators hear. If you don't have a suitable receiver, perhaps a buddy will do some checks for you on the air. In that case you can plug in your test probe into the BFO Test point, get on the air and hook up with your buddy, then try making small adjustments in the BFO frequency for FL1 while he listens to the difference. You'll have to switch to CAL FIL, chose the filter, make a small adjustment in the BFO frequency, then switch out to make the new BFO value get read into memory. Keep a note of where you started and work in small increments while your buddy reports on how the sound changes. If your buddy's ears are good, his tuning precise and the filters in his rig aren't drastically altering your signal, you can make your final adjustments that way. Be sure to check and adjust both Upper and Lower sidebands. You can do both sidebands on any band. Ron AC7AC ___ 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] Mic Options (WAS: Heil handmike discontinued.)
Ken wrote: I was told by a friend that the K2 prefers a 600 ohm mic and that a electrec mic element wouldn't sound right. I've got both - an old Cobra (label removed) CB 600 ohm dynamic and a boom headset salvaged from a cell phone (2.2k). A typical electret does very well on a K2. Electrets are not necessarily a high-impedance element. The impedance the rig sees will be the value of the dropping resistor used to supply d-c bias to the mic element hot side. Since the d-c voltage source for the bias is grounded for audio (has large capacitors to ground in the circuit), the resistor becomes the audio load between the audio line and ground. My electret uses a 1k resistor, so its impedance is 1k ohms. It is true that a high-impedance mic won't normally sound good on a rig expecting a fairly low impedance mic, like the K2. Connecting a typical high-impedance mic to a low impedance will normally cause the lows to be lost, making the mic sound very bright or tinny. Very few such mics are still around. Even the venerable D-104 was updated with an amplifier in the base to convert the very high (appx 0.5 megohm) impedance of its crystal element to the lower impedance most current Ham rigs want. My mic is 'homebrew' - using an inexpensive ( $5 USD) electret element mounted in a hand mic enclosure that originally contained a cheap dynamic element. The electret element has a frequency response far, far greater than the K2 needs: from about 30 Hz to about 16 kHz. The transmitted bandwidth is controlled entirely by the K2's SSB module filter. People tell me it sounds excellent on the air. Ron AC7AC ___ 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] on air SSB filter alignment
Listen to yourself transmitting into a dummy load on another decent receiver with headphones and adjust your carrier insertion oscillator or filter (whichever you do on an Ele) for best audio. Ron D'Eau Claire wrote: Howard wrote: Other hams say my USB sounds tinny, lacking in bass, on 20 meters, that's the band I'm on these days. On spectrogram, the received audio curves look great. What is the process for on air adjusting of the filters for better transmit audio? Is this process archived somewhere? Nigel A. Gunn. 59 Beadlemead, Milton Keynes, MK6 4HF, England. Tel +44 (0)1908 604004 e-mail [EMAIL PROTECTED] or [EMAIL PROTECTED] wwwhttp://www.ngunn.net or http://www.ngunn.demon.co.uk Amateur radio stations G8IFF, KC8NHF Member of AMSAT-UK #182, ARRL, GQRP Club, QRPARCI, SOC #548 RAYNET Flying Pig #385, Dayton ARA #2128, AMSAT-NA LM-1691, ___ 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] K2 XTALS
I am buiding a K2 sn 004149 from an earlier non built K2 sn 000571 up to rev 'B' on the new 'B' pc boards. I also have an early KSB2 SSB unit. All the above has the original XTALS for the CW filter and SSB unit.ie 4.195MHz -20. I have read lots of comments on the audio quality because of the tight band pass of the original SSB unit. I know that Elecraft have produced some modifications in the form of 14 new XTALs and a capacitor upgrade kit. Does anyone have experience of these mods ? Is there a basic capacitor upgrade that one can do first of all? Or is changing all the XTALs and adding new capacitors the best solution? Or is the original configuration ok? Regards Colin M1BNW ___ 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] K2 XTALS
Colin, There are 2 separate things here - Elecraft's specs to the xtal vendor for motional inductance were tightened on or about SN 2600. If you have a set that is older, you will likely benefit from installing a new set of crystals (do not mix new with the older crystals in any one filter (CW or SSB). Secondly, yes Elecraft has widened the SSB filter bandwidth from 2.0 to 2.3 (or 2.4) kHz. Only a few capacitors in the filter are changed, and you likely have the capacitors for the narrower filter. Weigh the pros and cons of the wider or narrower bandwidth - the narrower filter provides a bit more 'punch' to a QRP SSB signal, but is a bit more critical in positioning the passband correctly. The wider passband results in a more natual sounding transmitted signal. Take your pick based on your operating desires, both work well. If you do decide to change the fiilter bandwidth, it is easier to install the capacitors during initial construction - it is not really difficult to do it after assembly, but decidedly easier to put the capacitors in before the crystals are installed. 73, Don W3FPR -Original Message- I am buiding a K2 sn 004149 from an earlier non built K2 sn 000571 up to rev 'B' on the new 'B' pc boards. I also have an early KSB2 SSB unit. All the above has the original XTALS for the CW filter and SSB unit.ie 4.195MHz -20. I have read lots of comments on the audio quality because of the tight band pass of the original SSB unit. I know that Elecraft have produced some modifications in the form of 14 new XTALs and a capacitor upgrade kit. Does anyone have experience of these mods ? Is there a basic capacitor upgrade that one can do first of all? Or is changing all the XTALs and adding new capacitors the best solution? Or is the original configuration ok? Regards Colin M1BNW -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.322 / Virus Database: 266.11.16 - Release Date: 5/24/2005 ___ 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] Mic Options (WAS: Heil handmike discontinued.)
I go with RON on this one. After 30 years working ( under contract) with companies that include Sennheiser, AKG and Shure Brothers, all who actually manufacture microphone elements. They taught me some things. I have bought a few Sennheiser boom headsets on Ebay... great headphones ,, and i have some mics for my K2 icoms and tentecs made from electret elements scrapped from telephones...nortel, panasonic. ALL electrets are WAY TOO GOOD for communications audio even the one you get at radio shack for $ .99 US. Just stuff it in a gooseneck and you have a GREAT base station mic don't forget the ptt switch... another $ 1.29. It's Sooo cheap you owe it a try. bill A typical electret does very well on a K2. Electrets are not necessarily a high-impedance element. The impedance the rig sees will be the value of the dropping resistor used to supply d-c bias to the mic element hot side. Since the d-c voltage source for the bias is grounded for audio (has large capacitors to ground in the circuit), the resistor becomes the audio load between the audio line and ground. My electret uses a 1k resistor, so its impedance is 1k ohms. It is true that a high-impedance mic won't normally sound good on a rig expecting a fairly low impedance mic, like the K2. Connecting a typical high-impedance mic to a low impedance will normally cause the lows to be lost, making the mic sound very bright or tinny. Very few such mics are still around. Even the venerable D-104 was updated with an amplifier in the base to convert the very high (appx 0.5 megohm) impedance of its crystal element to the lower impedance most current Ham rigs want. My mic is 'homebrew' - using an inexpensive ( $5 USD) electret element mounted in a hand mic enclosure that originally contained a cheap dynamic element. The electret element has a frequency response far, far greater than the K2 needs: from about 30 Hz to about 16 kHz. The transmitted bandwidth is controlled entirely by the K2's SSB module filter. People tell me it sounds excellent on the air. Ron AC7AC ___ 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 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] HAM-COM ALERT!!!!!!!!
Hamcom is coming next week! June 3, 4 and 5. Y'all better come see me! I am coming out from behind my telephone and computer to meet and greet AND I am bringing lots of goodies to sell- including the new T1's. Any Elecraft Enthusiasts are more than welcome to come by and help out at the booth. Don Brown KD5NDB and I will be working all three days and would really like to have some of you help us out. You will have a lot of fun sharing your experiences and expertise with those inquiring minds. Don has been involved in Elecraft products from the early days and is very knowledgable about our proucts. He has built just about everything we have- many times over. You can email me directly, [EMAIL PROTECTED] if you know when you would like to help out, or just stop by the booth and we can set up a time. Also, if you have nothing else to do Friday morning I could use a little set-up help, but I would need to know ahead of time to get you in early! I am really looking forward to my first trip outside the Dallas airport and especially to meeting all of you! The office will be closed Monday, May 30th, but will check my emails 1st thing Tuesday morning. Lisa ___ 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] K2 #4913
I guess that I have better get to building #4914! It has been a busy month and lots of travel for work! As my friend (and co-worker) Chuck Bland (N6DBT) advised me... To take it on the road and build in the hotel room. I may just do that! 73 Jim W7RY K2 4914 not yet started At 02:22 PM 5/26/2005, Jim Sheldon wrote: Ken, KG0WX now has his new K2 #4913 on the air -- worked him on 7.040 just a few minutes ago for his first K2 to K2 contact. I'm sure he is really appreciative of all the help the elecrafters gave him in getting it going. He bought his after seeing mine at a local hamfest, and he commented to me that he still can't believe what the receiver can hear, even on a dead band as 40 is right now. Jim - W0EB K2 #4338 ___ 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 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] It's here, It's here
It arrived this afternoon while I was at work. What? My K2 #4948. Golly Gee I feel like a little kid waking up on Christmas Morning and seeing all the Goodies under the tree. rc kc5wa -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.322 / Virus Database: 267.1.0 - Release Date: 5/27/2005 ___ 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
