[Elecraft] Binding Post Failure (WAS: KX1 s/n 1005 lives!)
Many banana plugs and jacks use nylon insulation which is a *terrible* RF insulator. Nylon is hygroscopic (absorbs moisture) so its insulating properties are highly dependent upon the relative humidity. Running 15 watts into an end-fed wire I literally melted a banana jack that looks just like those shown at the top of the page here: http://www.oselectronics.com/ose_p111.htm In just a few seconds of sending, I smelled hot plastic and saw smoke rising as the insulation sagged. As it happened, I had a voltage loop (point of high RF voltage) at the rig on that band and it caused a quick and total failure. But even at voltages below that which caused failure, part of the RF was being converted into heat instead of electromagnetic waves. All of the Pomona hardware that I've seen uses polycarbonate insulation. This is superior, tough stuff! Pomona makes these adapters for use with test equipment at very low voltage levels. The popular 1296 that Matt, K7OE mentioned, is rated to 500 vac max (see data sheet at http://tinyurl.com/7mca5). They don't publish dielectric info or mention their losses at RF, but that sounds adequate for RF power levels up to some tens of watts into a high impedance (1,000-ohm) load. Of course lower impedances mean lower voltages. I still use nylon banana plugs and jacks for single wire and open wire feeder connections, even at QRO power levels, but I never rely on the nylon for insulation. The jacks are always mounted in an acrylic or polycarbonate insulating panel with ample spaces between them. 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] KX1 s/n 1005 lives!
Matt and Kelly wrote: Pomona Electronics makes a binding post, standard, double banana (female) to BNC male, part number Pomona 1296 that I use and it's great. You can do a search for them on the Internet or check out any good electronics shop. Matt - K7OE -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ron D'Eau Claire Sent: Monday, May 30, 2005 11:23 AM To: elecraft@mailman.qth.net Subject: RE: [Elecraft] KX1 s/n 1005 lives! Mike W2VD wrote: Now I just need to find a BNC male to banana female to connect the portable antenna and radial. A standard BNC male to SO-239 female adapter works FB. A banana plug is a perfect fit into the center hole of he SO-239 (large coax) connector and you're all set for the time when you want to hook the rig to an antenna that happens to have RG-8 or similar large coax and fittings. Even Radio Shack carries those. For the ground, a spade lug under the case thumbscrew right under the connector - use a star washer or rub a little paint off where the screw meets the metal for a good electrical contact. 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 Reasonably priced "BNC Male To Dual Binding Posts". http://www.oselectronics.com/ose_p111.htm ___ 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] For Sale: Elecraft MD-2 Microphone + PL2T Studio Arm For MD2 + Heil RS-1 12" Riser
For Sale: Elecraft MD-2 Microphone + Elecraft PL2T Studio Arm For MD2 + Heil RS-1 12" Riser. Selling all three pieces as a set only. New price is about $143.00. Will sell set for $100.00 + $15 for shipping. The microphone and the arm are described on the Elecraft web site. The RS-1 12" riser is described on the heilsound web site. Items are like new, wired and ready to use on your K2. The 12" riser is from Heil Sound and lifts the mounting point for the studio arm up 12" giving more room behind you rig for the arm to swing. Looks good and worked good for me. I'm selling because I don't use it. I use a headset for SSB but work mostly CW. Please respond off the list. Roger, W1EM ___ 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 s/n 1005 lives!
Pomona Electronics makes a binding post, standard, double banana (female) to BNC male, part number Pomona 1296 that I use and it's great. You can do a search for them on the Internet or check out any good electronics shop. Matt - K7OE -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ron D'Eau Claire Sent: Monday, May 30, 2005 11:23 AM To: elecraft@mailman.qth.net Subject: RE: [Elecraft] KX1 s/n 1005 lives! Mike W2VD wrote: Now I just need to find a BNC male to banana female to connect the portable antenna and radial. A standard BNC male to SO-239 female adapter works FB. A banana plug is a perfect fit into the center hole of he SO-239 (large coax) connector and you're all set for the time when you want to hook the rig to an antenna that happens to have RG-8 or similar large coax and fittings. Even Radio Shack carries those. For the ground, a spade lug under the case thumbscrew right under the connector - use a star washer or rub a little paint off where the screw meets the metal for a good electrical contact. 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] Bias Resistor for the Heil Pro Micro Boomset
Hello everyone: Does anybody know the proper value of the bias resistor for a Heil Pro Micro boomset with the HC-5 cartridge for coupling to a late serial no. (4736) K2.? Thanks for your help. Carlos, KP4GL ___ 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] Bias Resistor for the Heil Pro Micro Boomset
Carlos, The proper value for the 'resistor' is infinite ohms - in other words, the HC5 element is a dynamic type mic and does not need any bias resistor. It may also be true that the use of any bias resistor may damage the mic element - this is just speculation on my part, but I am not willing to try it on my Heil dynamic elements. 73, Don W3FPR > -Original Message- > > Hello everyone: > Does anybody know the proper value of the bias resistor for a Heil Pro > Micro boomset with the HC-5 cartridge for coupling to a late serial no. > (4736) K2.? > Thanks for your help. > Carlos, KP4GL > > -- 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
Homebrew Autotuner Update (Re-sent)
Gil, Leigh, Mike, and anyone else that is interested in tuners, I have posted some pictures of my autotuner on my web page. Feel free to have a look at http://www.qsl.net/k7fj An icon at the bottom of the page will take you to the tuner page.
RE: [Elecraft] KX1 s/n 1005 lives!
Mike W2VD wrote: Now I just need to find a BNC male to banana female to connect the portable antenna and radial. A standard BNC male to SO-239 female adapter works FB. A banana plug is a perfect fit into the center hole of he SO-239 (large coax) connector and you're all set for the time when you want to hook the rig to an antenna that happens to have RG-8 or similar large coax and fittings. Even Radio Shack carries those. For the ground, a spade lug under the case thumbscrew right under the connector - use a star washer or rub a little paint off where the screw meets the metal for a good electrical contact. 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
Subject: Re: [Elecraft] Headphone police
>But common ordinary "horse sense" is no longer taught in the schools. 73, Steve N7VS< Or, unfortunately, relevant in trials. What a pity that society seeks to reassign personal responsibility. 73, Jim K5HO - Nunquam Secundum ___ 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 s/n 1005 lives!
I've built and added the 30m option and the internal ATU. Everything works just fine. It's going to be fun using this rig in the park! Now I just need to find a BNC male to banana female to connect the portable antenna and radial. -Mike W2VD Michael Ross wrote: I've finished building my KX1, s/n 1005. The KX1 build time was much less than the other Elecraft rigs that I've built. It's a sweet little rig. It does about 3W output with a 12V 1A regulated power supply. I'm going to get used to it for a bit, after which I'll build and install the 30m module and the internal ATU. This would be a nice Elecraft starter rig for someone to build. Great job Elecraft! Now, if you guys would come out with a rig with a built-in MP3 player, I'd never put it down! hi Mike, W2VD ___ 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] Preamp, Attenuator on K2 #4901
W3FPR - Don Wilhelm wrote: Other than a faulty solder connection or an incorrect resistor value (R74, R75, R76, R77), I can think of only 2 things that might cause the PreAmp to not work - T6 could be connected incorrectly or the windings shorted together, or C146 may be faulty. Try tacking a 0.01 uF capacitor across R77 (bottom of the board) as a check for an open C146 and if that doesn't fix things, try rewinding T6. -Original Message- I just finished K2 #4901 and it works great. The only thing I have a question on is the preamp setting. When the annunciator is on over the preamp, it seems as though background noise goes down and the signal strength is reduced. Jim-- Definately what Don said. I was in exactly the same situation as you: Margaret Leber wrote: After reworking a couple of suspect joints in the preamp section and removing and reinstalling T6, the preamp in K2 1641 is now working. 73 de Maggie K3XS Editor, Phil-Mont Mobile Radio Club Blurb - http://www.phil-mont.org Elecraft K2 #1641 -- -/___. _)Margaret Stephanie Leber CCP, SCJP/"The art of progress / /(, /| /| http://voicenet.com/~maggie SCWCD/ is to preserve order/ ---/ / | / | _ _ _` _ AOPA 925383/ amid change and to / --/ ) / |/ |_(_(_(_/_(_/__(__(/_ K3XS / preserve change amid/ -/ (_/ '.-/ .-/ARRL 39280 /order."-A.N.Whitehead/ /(_/_(_/___AMSAT 32844_/<[EMAIL PROTECTED]>/ ___ 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] Headphone police [ End of thread]
Let's end this one. we're drifting -way- off topic :-) 73, Eric WA6HHQ Elecraft list moderator EricJ wrote: Was it ever? I don't remember any classes in "horse sense". Eric KE6US -Original Message- But common ordinary "horse sense" is no longer taught in the schools. 73, Steve N7VS ___ 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] WA3WSJ: Nomad Trips
Hello all, The Radio Nomad known as WA3WSJ will be on the road again this summer! Here is a tentative schedule of my planned trips: June 4 to 5th-- Appalachian Trail Hike, June 25 to July 2nd-Outer Banks Lighthouse Trip, August 3 to 7th-Delaware/NJ Lighthouse Trip. For additional information on the "Nomad," click on http://www.wa3wsj.com/files/WA3WSJevents.html 72/73, Ed, WA3WSJ ___ 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] Preamp, Attenuator on K2 #4901
Jim, Other than a faulty solder connection or an incorrect resistor value (R74, R75, R76, R77), I can think of only 2 things that might cause the PreAmp to not work - T6 could be connected incorrectly or the windings shorted together, or C146 may be faulty. Try tacking a 0.01 uF capacitor across R77 (bottom of the board) as a check for an open C146 and if that doesn't fix things, try rewinding T6. 73, Don W3FPR > -Original Message- > > I just finished K2 #4901 and it works great. The only thing I > have a question on is the preamp setting. When the annunciator > is on over the preamp, it seems as though background noise goes > down and the signal strength is reduced. In fact, there seems to > be little difference between the preamp and att settings. I've > been through the schematic and carefully reviewed the parts > installed for the preamp and I can't see anything wrong. Has > anyone experienced this problem, if it is one? > > 73 and thanks. > > Jim, K4ZMV > -- 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
[Elecraft] kx1 #1056 atu
Okay! I found the problem. I had reversed leads #1 #3 on T1. After correcting this power out in TUNE shown as P3.0 and the DL1 read 7.06 v which is where it should be, and SWR = "r1.0". I hooked up a 30m antenna and got an SWR of "r4.5". Man you could hear the relay chatter. I even got a NULL on C9 of 1.5mv on my DDM's 200mv scale Tnx for the help de "rc" kc5wa -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.322 / Virus Database: 267.2.0 - 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
[Elecraft] Preamp, Attenuator on K2 #4901
Hello, All. I just finished K2 #4901 and it works great. The only thing I have a question on is the preamp setting. When the annunciator is on over the preamp, it seems as though background noise goes down and the signal strength is reduced. In fact, there seems to be little difference between the preamp and att settings. I've been through the schematic and carefully reviewed the parts installed for the preamp and I can't see anything wrong. Has anyone experienced this problem, if it is one? 73 and thanks. Jim, K4ZMV ___ 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 & Aux Digital Mode Connection Box
Hi Lynne, I know that many ops are running commercial boxes such as the Rigblaster, the Buxcomm interfaces, Tigertronics, and the MFJ interface. For myself, I run the orignal Rigmaster with RJ45 connectors (i.e., I originally used it with an ICOM 706MIIG) on PSK31 and RTTY with my K2. To use the Rigblaster, set the jumpers to the Kenwood radio configuration. I would buy an M-8 Rigblaster (i.e., for Kenwood) instead of the RJ45 connector variant because the cabling will be more straight forward. 73, Les WA3SGZ ___ 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] MH2
The MH2 is sold. TNX K0ARO ___ 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] Let me build your K2.
I have built 90 K2's to date, and many of the other Elecraft kits. Let me build your radio. My rates are reasonable and you get a built 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