[Elecraft] K3 cable for Mercury Lux amplifier

I would like to know if the following connections would work for low power tuning and BCD Mercury Lux bandswitching: DE15p  K3      Mercury Lux DB9 Band 3 (D) pin14    pin 8Band 2 (C) pin 9 pin 3Band 1 (B) pin 3     pin 7Band 0 (A) pin 13   

[Elecraft] KPA1500 Beta Firmware

Should we not download beta v. 2.62 or v. 2.66 for now and go back to production v. 2.58?  Roy  W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elec

[Elecraft] K4 Front Panel Phones Jack

When I plug my AKG K240 headphones into the front panel jack, my K4D produces static when transmitting.  Removing the headphones plug, my transmitted audio is normal.  If I use the rear jack with these same headphones, there is no problem with my transmitted audio.The Elecraft K4 operating manua

[Elecraft] PRE/ATTN Button on K4D

If the PRE/ATTN button is turned OFF, does this mean the receive AUTO preamp/attenuation is also turned off even if it is showing ON in the menu?  Thanks,  Roy  W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo

[Elecraft] K4D Receiver Question

Considering the high noise level on the 75 meter band, has anyone had to use both 21 db of attenuation with PRE/ATTN button and additional attenuation with the RF/SQL encoder?  All illustrations have shown the RF/SQL encoder set to zero (default),  Is the RF/SQL encoder to be used only for squel

[Elecraft] K4D Receiver Question

I find my receiver is very noisy.  I know this time of the year receiver noise can be very high.  I have to use all 21 db of reduction from the PRE/ATTN button and around 30 db reduction on the MRF encoder to get the radio quiet enough to hear hear signals adequately on the 75, 40 and 20 meter b

[Elecraft] Using P3 with K4D

I noticed Eric was demonstrating K4 CESSB showing the waveform in the P3 display.  I would like to know how the P3 is connected to the K4.  Thanks,  Roy  W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecra

[Elecraft] K4 Firmware Updating

Can I connect the ethernet port directly from my internet sevice provider router to my K4 for firmware updates?  If so, would I need to go into the K4 menu and change the IP address since NO ETHERNET is the default setting?  Thanks.  Roy Morris  W4WFB

[Elecraft] K3 LPA TVS Clamp Diodes

I would appreciate a pic showing the installation of the TVS clamp diodes across the two LPA amplifier transistors in the K3..  Thanks  Roy Morris  W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help

[Elecraft] LPA Mod for K3/K3S

I would like to see how these diodes are placed on the LPA board.  Thanks for any info on this.  Roy Morris  W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post

[Elecraft] Connecting IC-7300 to KPA1500

I would like the KPA1500 to change bands and frequency bins established by the IC-7300.  I understand this can be done with these cables:1) Cable between KPA1500 KEY-IN jack and IC-7300 SEND CONTROL jack.2) Stereo cable between KPA1500 XCVR SERIAL and IC-7300 CI-V REMOTE CONTROL jack.  This is a

[Elecraft] Elecraft KPA500 LPF T/R Switch Rework Rev. E Mod

I have talked with Elecraft today about the need for the E850607 parts kit. I was told this parts kit is needed for the Rev. D9 board that is populated with surface mount components.  I have an EARLIER board (A or B) that has the non-surface mounted yellow capacitors.  Because Elecraft could no

[Elecraft] New Revision of KPA500 LPF TR Switching Rework Rev. E

I have an early KPA500, and it works flawlessly.  Is this mod recommended by Elecraft on ALL amplifiers that presently have Rev. D ?  This mod requires considerable disassembly, and I don't want to do it unless it is highly recommended.  Please state the specific reason for this mod.  Thanks.  R

Re: [Elecraft] K3 no RF Output

Check your TMP cable connections. Sent from Mail for Windows 10 __ 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 hoste

[Elecraft] KPA1500 Firmware v. 2.10

I am re-installing v. 2.09 until 2.10 is fixed.  Roy Morris  W4WFB __ 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 host

[Elecraft] KPA1500 v. 2.10

After loading v.2.10 the LEDs seem to show the correct power level at or near the 1500 watt level.  At reduced power levels the LEDs stream faster but seem to also show the correct power level.The blue display window does not show the correct power level.  It consistently shows a very low power

Re: [Elecraft] KPA1500 FW 1.78 - no PTT response

I have loaded v.1.78 into my KPA1500 and PTT works fine through my K3. Roy Morris W4WFB Sent from Mail for Windows 10 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.h

[Elecraft] KPA1500 Drive Power

Noone has responded to my previous inquiry about the KPA1500 power drop-off due to heat.  I would like to know if the KPA1500 power output actually drops off due to heat build-up or because the SWR display was erroneously showing a power drop before it was fixed.  Thanks,  Roy Morris W4WFB _

[Elecraft] KPA1500 Drive Power

Does the KPA1500 drive power output actually drop off due to heat build-up or because the SWR display was erroneous before it was fixed.  Thanks,  Roy Morris  W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/e