Re: [Elecraft] Elecraft] KXPA100 Thermal Fault
There will always be disagreement on this but I vote for blow when external forced cooling. The air can be directed exactly to where it is needed, not sucked from all over the place. I ran my K2 overnight for days at 50W doing some Grey-line propagation tests. Small external fan tilted at 45 degrees and blowing down onto the heat sink in the area where the transistors were bolted. The little screamer on the back of the KPA100 never activated. The situation with the K3 is different, the PA heat sink is buried in the box and the heat has to be sucked out otherwise all you would have is a fan oven. Regards, Mike VP8NO On 21/07/2014 20:37, Fred C. Jensen wrote: When I was using my K2/100 on RTTY, I stuck a muffin fan over the hottest part of the heatsink with a little square of sticky back velcro. Could run 100 watts just fine. Fan blew down. 73, Fred K6DGW TDY Huntington Beach CA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KX3 For Sale
KX3 for sale here prior to listing on QTH. KX3 SN 1246 includes KX3 160-6M Transceiver, BNC Male to Stackable Binding Posts, BNC Rt. Angle M-F, KX3-PCKT Accessory Cable Set, KXAT3 ATU, Int. NiMH Charger/CLK, KXFL Dual-Passband Roofing Filter, KXPD3 Precision Keyer Paddle ie newer no upgrade needed, Mh3 Hand Mic, Griffin IMic new in box for pan display, Power cord, Side KX Cover and Sides, and all documentation. Everything is perfect condition. Over $1600 invested, $1325 shipped Priority Mail USA. Contact off list kd...@comcast.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] [K3]
__ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KX3 that was for sale
The KX3 that was for sale has been sold and shortly will be on it way to Texas. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] For Sale in UK: K3/100 plus accessories
I'm selling my K3/100 serial number 7744 (Feb 2013) + KAT3 and KXV3A - £1700. Also for sale are a KFL3-2.8K (2.8kHz filter) - £95, and an XG3 - £110. Buyer collects or pays carriage at cost. UK sale only for the K3/100, but I may consider posting the filter or XG3 elsewhere in Europe. More details and photos on request to Paul (M0CVX) paul.bradbe...@ntlworld.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX3 sidetone bug when recording memories
So noted, Sven. Thanks. There's no need to disable VOX when recording CW messages, by the way. In record mode, transmit is disabled. The usual reason for disabling VOX is to do code practice, and in this case I'd avoid practicing "..--" (IM). 73, Wayne N6KR On Jul 21, 2014, at 11:29 PM, Sven Ladegast wrote: > Hello list, > > I just noted another misbehaviour on the KX3 (MCU firmware 1.94 and 2.12): > > When disabling VOX in CW mode and recording a text into one of the memories > 1-6 and using the ending phrase (..--) at the end of the text the CW > sidetone stays on until I press another button. I usually tap MSG again and > the sidetone stops. > > Seems like the confirmation tone of the ending starts but does not stop > until another sound is played...for example a key press. > > I noticed when I set up CW memories testing the fast play mode in the contest > and programming the memories in the field. I usually use the KX3 utility for > that but in the contest you want your transmission end as quick as possible > (using ). > > This behaviour only happens while recording memories and not while playing. > > Regards! > > Sven, DJ2AT > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to n...@elecraft.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Buddipole battery and charger for sale
Buddipole battery and charger for sale. Will run a 100 watt radio for a period and a KX3 all day if not days. The battery and charger were purchased in March 2013 and used about 3 times with the same amount of charges so virtually brand new. I had it for my KX3 which I have just sold. The batter a 4S2P retails for $165 and the Multi 4 charger sells for $79 and this does not include shipping. I will sell both of these for $150 and you choose and pay shipping. If interested contact off list. 73’s __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KXPA100 Thermal Fault
This looks like a a relatively inexpensive solution to the temp controlled fan idea. They seem to have a reputation for being quiet and reliable. http://sitesearch.outletpc.com/search?page=1&query=Gelid+FN-TX12-15+Silent+++ON1266+1+++9.98++Warranty+%3D+30-Day+Warranty+Included+12+TC+120mm+3pin+1500RPM+++%28%2B0.00%29+Temp+Control+Case+Fan&I1.x=55&I1.y=3 -- View this message in context: http://elecraft.365791.n2.nabble.com/KXPA100-Thermal-Fault-tp7591451p7591508.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KXPA100 Thermal Fault
Salvage a 12 volt muffin fan from a defunct computer and put a resistor in series with it to slow it down. Almost whisper quiet, but it can substantially increase the air flow over the heatsink and keep it cool. Cost, almost nothing. But put a shield over it to keep fingers out of the blades. 73, Don W3FPR On 7/22/2014 6:18 PM, Bob N3MNT wrote: This looks like a a relatively inexpensive solution to the temp controlled fan idea. They seem to have a reputation for being quiet and reliable. http://sitesearch.outletpc.com/search?page=1&query=Gelid+FN-TX12-15+Silent+++ON1266+1+++9.98++Warranty+%3D+30-Day+Warranty+Included+12+TC+120mm+3pin+1500RPM+++%28%2B0.00%29+Temp+Control+Case+Fan&I1.x=55&I1.y=3 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] N8LP Tuning Relay w/ K3/KPA500 - help, please
Elecraft Reflector participants: If any of y’all use the N8LP tuning relay w/ your K3 and KPA500, I appreciate your help. My kit went together smoothly and all ohm meter checks A-OK. When I plug the relay into the SteppIR control box the green light comes on. I have RCA phono plug cable running from the PTT connection on the relay to the PTT In connector on K3 and another from the PA Key on Amp to the LOOP plug on Relay box. When I key PTT while SteppIR is tuning, KPA500 does not switch to standby as I believe it should. Obviously I’m doing something wrong. I even tried the Key Out connection on the K3 but that didn’t work either. Any thoughts would be appreciated! 73, Cary, K4TM Lynchburg VA H. Cary III h3c...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] N8LP Tuning Relay w/ K3/KPA500 - help, please
Cary, I think it will work as you want if you use the small interrupter between the end of the cable from the K3 where it attaches to the KPA500. 73, Jim N7US -Original Message- Elecraft Reflector participants: If any of y'all use the N8LP tuning relay w/ your K3 and KPA500, I appreciate your help. My kit went together smoothly and all ohm meter checks A-OK. When I plug the relay into the SteppIR control box the green light comes on. I have RCA phono plug cable running from the PTT connection on the relay to the PTT In connector on K3 and another from the PA Key on Amp to the LOOP plug on Relay box. When I key PTT while SteppIR is tuning, KPA500 does not switch to standby as I believe it should. Obviously I'm doing something wrong. I even tried the Key Out connection on the K3 but that didn't work either. Any thoughts would be appreciated! 73, Cary, K4TM Lynchburg VA H. Cary III h3c...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KXPA100 Thermal Fault
I did that on two of my radios, and built a simple clamp on bracket to mount them without modifying the original heat sink fins. Cost of my project was approx. $7 for the fan, and $1.5 for some aluminum stock. I was particular careful to select fans with clearly stated noise figures. Not all vendors publish the noise figures, but those with less than 20 dBA are fairly quiet, and, as Don says, if you slow them down a bit, they will move a lot of air over time, and you will never hear them. I can provide photos if anyone is interested in how I mounted mine. -- K8JHR - On 7/22/2014 7:04 PM, Don Wilhelm wrote: Salvage a 12 volt muffin fan from a defunct computer and put a resistor in series with it to slow it down. Almost whisper quiet, but it can substantially increase the air flow over the heatsink and keep it cool. Cost, almost nothing. But put a shield over it to keep fingers out of the blades. ___ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KXPA100 Thermal Fault
On 7/22/2014 4:04 PM, Don Wilhelm wrote: Salvage a 12 volt muffin fan from a defunct computer and put a resistor in series with it to slow it down. Salvage a 12v muffin fan, and run it off of a 7 volt wall-wart. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Elecraft] KXPA100 Thermal Fault
Re: blowing air vs drawing air, the object is to increase air flow over the heat sink (or tube if no heat sink). If one does not have a plenum directing air over the entire heat sink surface, my bet is with blowing. Drawing air is effective if there is a plenum confining the air flow over the heat sink surface. I you are cooling a tube with fins like some of the 3CX or 4CX types then you need the extra force of a blower due to the high air resistance (back pressure) thru the fins. Example a 8877 (3CX1500A). I have both a blower and 7-inch radial exhaust fan on that amp. Exhaust fan lowers back pressure that the blower works into. All my other amps are currently configured with fans that blow down onto the heat sink. I will be installing five fans on a 6m Harris TV amplifier (1100w with 16 transistors) that draws air. That is needed as air is drawn thru several holes from the input side of the amp for cooling the input components by pulling air into the output side. 73, Ed - KL7UW http://www.kl7uw.com "Kits made by KL7UW" Dubus Mag business: dubus...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Elecraft] KXPA100 Thermal Fault
Mine was a brushless DC fsn from an old computer. Quiet running on 12V. One anomally ... on 15 (only), with beam pointed over shack & 1KW, transmitting slowed it down. Any other direction was fine 73, Fred K6DGW TDY Huntington Beach CA Don Wilhelm wrote: >Salvage a 12 volt muffin fan from a defunct computer and put a resistor >in series with it to slow it down. Almost whisper quiet, but it can >substantially increase the air flow over the heatsink and keep it cool. >Cost, almost nothing. But put a shield over it to keep fingers out of >the blades. > >73, >Don W3FPR > >On 7/22/2014 6:18 PM, Bob N3MNT wrote: >> This looks like a a relatively inexpensive solution to the temp controlled >> fan idea. They seem to have a reputation for being quiet and reliable. >> http://sitesearch.outletpc.com/search?page=1&query=Gelid+FN-TX12-15+Silent+++ON1266+1+++9.98++Warranty+%3D+30-Day+Warranty+Included+12+TC+120mm+3pin+1500RPM+++%28%2B0.00%29+Temp+Control+Case+Fan&I1.x=55&I1.y=3 >> >> >> > >__ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft@mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html >Message delivered to k6...@foothill.net > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
