[Elecraft] For Sale PX3-K

I have complete PX3-K as packaged by Elecraft for sale.  Panadapter kit for the KX3.   Asking $560 ppd CONUS.    Contact off list. 73, Mike AC5P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

[Elecraft] KPA/K3 AUX Cable FS

Anyone have an interest for subject cable UNUSED in original packaging?    Contact OFF list. Mike AC5P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] KPA500 Fan Question

Your resting temperature at 42C seems TOO warm to me?   My KPA resting temp runs about the same as ambient temperature of shack, 25-30C.   With 25-30W drive from TS-890,my KPA seldom reaches 3rd stage 60 degrees.   Have you checked SWR or cable between 890 and KPA?   73, Mike AC5P On

Re: [Elecraft] KPA500 transformer removal

Am guessing that toroid transformer is 70% or more of total KPA mass? Has anyone put it on a scale and remembed its weight?  Be sure to seat and torque bolt properly when putting it back in.   Mike AC5P On Tuesday, November 22, 2022 at 07:50:22 AM CST, Michael Walker wrote: Not really.

[Elecraft] KXV3A For Sale

Unused KXV3, (K3 Xverter I/O, RX Ant I/O) accessory kit with install instructions FS for K3.   $100ppd CONUS. Contact direct off list. Mike AC5P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] Elecraft KPA500 sn 1910 dead

I was gifted a KPA-500 in Aug. 2019.  Used about a month before It blew a main line fuse.   That was replaced and the amp remained dead.  What happened was the center bolt holding the power transformer was not torqued down properly and when the amp was tilted the core shifted into the low

[Elecraft] OT; large ferrite toroid core?

We were gifted a somewhat large (6"OD, 2.6" ID, 9/16" thick) ferrite core of unknown mix and original use.   On face was marked 6.6uH w/4turns.   My thinking it might make a good common mode RF choke on the output of an inverter generator or on coax feedline.    Not familiar with properties of

Re: [Elecraft] Chasing paddles around desk top

A short strip of friction tape under the feet works well also.   Mike AC5P On Thursday, July 8, 2021, 03:07:37 PM CDT, Walter Underwood wrote: Yep, Museum Wax is the good stuff. https://www.amazon.com/Quakehold-66111-Museum-Ounce-Clear/dp/B000FJU29U

Re: [Elecraft] KPA500 cabinet buzz

The KPA-500 transformer should be more than just a "hair" away from sides (step 6 above) as there are rubber bumpers and a ribbon cable between that should NOT be pinched.  Refer to Kit Assembly Instructions page 35 and figure 52. Mike AC5P On Sunday, May 30, 2021, 07:29:59 AM CDT, Eric

Re: [Elecraft] External Speaker

Have you tried a deflector tube on the internal speaker to direct the sound toward your head/ears?   Mike AC5P On Thursday, April 1, 2021, 01:18:45 PM CDT, Louis Visconti wrote: Can some one point me to a decent external speaker for my K2. Thanks. Lou, KD2MU -- This email has been

[Elecraft] K3 age?

I inherited K3 s/n 7105 without original invoice and was curious to its birth date?    Anyone have a close serial with their order date?   Thanks, Mike AC5P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft

Re: [Elecraft] Cheap Keyer Paddle

Here is another idea.  Search Te-Ne-Ke CW key at youtube.com   Mike, AC5P https://www.youtube.com/watch?v=2PZantLJRwc     On Monday, September 21, 2020, 10:46:55 AM CDT, Rich NE1EE <73.de.ne...@gmail.com> wrote: On 2020-09-19 10:27:-0400, Wilson  Lamb wrote: >

Re: [Elecraft] [OT] WWV Time Transmissions

Does anyone know any engineers who are hams at NIST, Fort Collins, CO?I be curious to know the RF loading coil and ground currents under the 0.024 wave stub  verticals for 5000M WWVB. Mike AC5P On Tuesday, September 1, 2020, 09:17:41 AM CDT, n6...@outlook.com wrote: Bill, WWVB added

Re: [Elecraft] Current Draw on 20M

FWIW, my old K3 (Nov'08) only pulls 17.8Adc at 12.5V for 100W into 50ohm dummy load at 14MHz.   Seems to follow your PA temp is gonna run hotter also.  WHY such poor efficiency Elecraft, (Wayne) ? 73,Mike, AC5P On Friday, June 19, 2020, 12:03:45 PM CDT, Randy Farmer wrote: Mine

Re: [Elecraft] [OT] Birds and DX

Stick some toothpicks in strip of styrofoam.   Mike AC5P On Sunday, June 7, 2020, 11:14:11 AM CDT, k...@juno.com wrote: Contact the Audobon Society to see if you can have a nest for a bird of prey (falcon perhaps).  Hopefully, it is one that will like crows as well... 73 de Ed

Re: [Elecraft] Self-fusing liquid electrical tape

Don,   Are those all 8 ft ground rods driven vertical in ground without help from a rock drill?   Lots of rock in your area?  Mike AC5P On Friday, June 5, 2020, 03:10:11 PM CDT, W2xj wrote: To my mind, false economy. Sent from my iPad > On Jun 5, 2020, at 3:36 PM, Don Wilhelm

[Elecraft] FS: KPAKAUX cable set

New unused AUX Cable set Optional KPA500 or KPA1500 to K3S/K3.  Wont play with my older K3 version with serial port.   Asking $30 shipped CONUS only.    Mike AC5P __ Elecraft mailing list Home:

[Elecraft] KPA-1500 PS pics?

Anyone have link/s to INTERNAL photos of the KPA-1500PS?   No find on google image search.   73, Mike AC5P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

[Elecraft] KPA-500 failure

Anyone else have their KPA-500 crash on power ON?   All LED's briefly flash then all dead.  Main fuses good.   73,  Mike AC5P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

[Elecraft] case for KX3?

Anyone had experience packing a KX3 in an Apache 1800 waterproof case from Harbor Freight?   Saw the case today at HF and looked like it would fit okay for good transport protection.   73, Mike AC5P __ Elecraft mailing list Home:

Re: [Elecraft] KPA500...standby vs. operate

My kpa shows HV 76 both in standby AND operate.  Drops to 61V, key down, 500W output.  AC line input drops from 124 to 122V at same time.   Mike AC5P On Sunday, October 27, 2019, 03:19:39 PM CDT, Wes wrote: You are putting it into standby two places.  Don't you mean "operate" for the

Re: [Elecraft] KPA500 with K3s

What is LENGTH of this cable?   Mike AC5P On Thursday, October 10, 2019, 06:31:59 AM CDT, Dick Dievendorff wrote: See pages 15, 16, and 27 of the KPA500 Owner's manual for a description of what the 15-pin ACC cable can do for you. It amounts to band information both ways so the amp

[Elecraft] KX3 sidetone booster

Getting a nice boost from the stock speaker (MON level 2) at my preferred pitch of 500Hz.   Booster is a 12-3/4 inch piece of 1-1/4" PVC tube (1-5/8"OD) with one end cut at 30 deg. Placed approx. 1/8 inch from the speaker holes gives the best gain.   Tube would be slightlyshorter for higher

Re: [Elecraft] KPA500 - Advantage of min fan speed?

Thanks Mike for the KPA-500 fan level settings.  That answers the question I was going to ask.   Could find no fan level info in the owners manual or from previous posts.I don't suppose any record kept of SPL  readings at the different levels?   Anyone done that?   73, Mike AC5P On

[Elecraft] Changing KX3 pitch ?

I recently inherited a KX3.  I can see what CW pitch setting is (550), BUT not been able to change it (to 500) with VFO A or B.  "Set sidetone pitch"  on page 16 of manual does not say how to CHANGE it?  What's the trick? 73, Mike AC5P 

[Elecraft] OT: ARRL Handbook request

Does anyone reading have a 1937,1938 or 1939 ARRL Radio Amateurs Handbook?   Please reply direct off list.  Thanks 73  Mike AC5P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] PS Comparison: Powerwerz SS-30DV vs. MFJ-4230MVP

Could the Powerwerx SS-30DV be the same supply as the Tekpower TP-30SWI minus the meter and a few dollars more?  Anyone measure the efficiency of the Powerwerx, AC input vs. DC output power?   73, Mike AC5P On Wednesday, March 13, 2019, 09:03:41 PM CDT, Dennis Moore wrote: I have the

[Elecraft] Tekpower PS ?

Anyone on list using a Tekpower TP30SW1 switching power supply?  It is model with Anderson power poles on front panel.Please reply direct.  Thanks 73, Mike AC5P __ Elecraft mailing list Home:

Re: [Elecraft] Choice of CW pitch

I get the best response for CW pitch volume from the K3 stock speaker with my 60 degree deflector horn on top.   The length was determined by experiment and gives a very noticeable boost at my desired pitch of 500Hz.   Mike  AC5P On Saturday, September 22, 2018 8:38 AM, Dave Cole (NK7Z)

Re: [Elecraft] OT: WWV/WWVH Closure

Dual 35kW ERP synchronous transmitters and antennas for 70kW ERP at 60kHz.   Short (for 5km wavelength!) 4x400 ft quad towers that support top hat.  Center connected cable is main radiator.    Hard to see getting 35kW ERP out of 100kW transmitter at 5000 meter wavelength for such a short stub

Re: [Elecraft] KPA-1500 Power Supply Cable Size

Okay have looked over the posts, but somehow have missed the actual AWG(American wire gage) SIZE of the stock DC pair?   Anyone KNOW this or maybe even micro-ohm tested (a long shot) it?  Voltage drop (ps to amp) divided by full load dc amps would be close enough.  73,  Mike  AC5P  On

[Elecraft] OT: old ARRL RA Handbook info

Thanks to the many of you who replied.   Got wanted info pretty quickly.   Amazing how many are holding on to old RA handbooks.   73, Mike  AC5P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

[Elecraft] OT: old ARRL RA handbook

Would anyone reading per chance have a 1960 or '61, '62 Radio Amateurs Handbook handy?Reply direct off list.  Thanks Mike  AC5P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] KXPA100 DC current at 20 50 watts

Interesting readings.  Would have thought KXPA more efficient.   Is this into dummy load and what frequency was test? 73, Mike AC5P On Monday, March 12, 2018 7:57 AM, Jan wrote: Power readings here in Ypsilanti . . .Using the KX3/PX3/KXPA100 for several years now AND

Re: [Elecraft] Items you think you can depend on

A line voltage monitor/alarm a very good idea.   Am surprised Dave's KPA500 power transformer core was not humming away at 60hz over excitation before he got it off line?Being retired from a large electric utility substation department, I know LTC  (load tap changer) controls can sometimes

Re: [Elecraft] Wattage Draw - K3S/100 vs KPA500/KAT500 - for UPS

Oh my!  The KPA500 is more efficient than you give it credit.   Since few have instruments to measure ac input parameters, will volunteer actual measurement figures.At 650W output into 50 ohm load, highest VA recorded was at 14.1 MHz at 1166.  Watts 974 with a pf of 0.83 or 83%.   AC input amps

[Elecraft] OT: Inverter type generators used for FD?

Curious if anyone used 2000W inverter type generator for portable FD operation?  What brand machine and what experience with RF noise encountered?Did anyone use Champion or Predator brand inverter generators?    Reply direct is fine.Mike  AC5P