[Elecraft] KPA USB problem solved

Thanks for the link from elecraft for the new drivers. __ 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:

Re: [Elecraft] KPA 1500 Remote input 13 broken

On Sun, May 9, 2021 at 3:15 PM Art Nienhouse wrote: > */I have been using my Icom 7610 for about two years driving my KPA1500 > amp via the Remote jack 13 on the rear. What is "Jack 13?" Do you mean the REMOTE (CI-V) jack on the IC-7610 (a 3.5mm phono connector), or the REM jack on the KPA1500

[Elecraft] KPA 1500 Remote input 13 broken

*/I have been using my Icom 7610 for about two years driving my KPA1500 amp via the Remote jack 13 on the rear, setting up the menu in the 7610 and the 1500 all worked just like it is supposed to . The cable to the ATU remote on the Icom works for the ATU [TUNE] function its a great combination.

[Elecraft] KPA 1500 12V Fault

Good morning, Recently, my KPA 1500 developed a fault that now happens every time I turn on the amp. Using the remote SW the fault is reported as 12V Fault. Hitting the reset button clears the fault and the amp runs fine. What is causing this fault and is there any way that this can be addres

[Elecraft] KPA 500

Hello. During operation with a high SWR and low power I heard a strong bang and the KPA500 shut off. I have opened the upper panel and found 2 ceramic caps of VRF2933. The inner side of the plastic cover is blackened Looks that the power supply is working I read 74.6 volt on the voltage display

[Elecraft] KPA-1500 power reading?

Elecraft Reflector Subject: Re: [Elecraft] KPA-1500 power reading? The meter itself can be off too. Using more slugs does help things, but to be really sure, test equipment needs to be periodically calibrated, which Hams never do. Dummy loads should be measured with a VNA. So, what you did is a big

Re: [Elecraft] KPA-1500 power reading?

The meter itself can be off too. Using more slugs does help things, but to be really sure, test equipment needs to be periodically calibrated, which Hams never do. Dummy loads should be measured with a VNA. So, what you did is a big help, but still can't provide 100% assurance that it is accurate.

Re: [Elecraft] KPA-1500 power reading?

Good points, Ray and Jim,  I should have been more detailed with what I posted. I checked The Bird 43 with two other Bird 2500w slugs from friends and they were all reading the same with a dummy load at 1500w.  I did the KPA1500 calibration using the Bird with a high power dummy load, then chec

Re: [Elecraft] KPA-1500 power reading?

On 2/6/2021 12:05 PM, Ray wrote: Trust the Wattmeter Only if it is seeing a 50 Ohm Dummy Load. Bird slugs have a tolerance of 5% of full scale, and the reading is only valid into a 50 ohm resistive load. The LP100A is 5% of the reading at any power level and into complex loads (i.e, not only

Re: [Elecraft] KPA-1500 power reading?

Trust the Wattmeter Only if it is seeing a 50 Ohm Dummy Load. WA6VAB Ray From: Jim McCook Sent: Saturday, February 6, 2021 11:35 AM To: Elecraft Reflector Subject: Re: [Elecraft] KPA-1500 power reading? I trust my Bird 43 wattmeter that's in line with the amplifier output, so I recalib

Re: [Elecraft] KPA-1500 power reading?

I trust my Bird 43 wattmeter that's in line with the amplifier output, so I recalibrated the KPA-1500 wattmeter reading per band to correlate more closely with it.  See WMTR ADJUST in the KPA-1500 menu.  Jim W6YA __ Elecraft mailing lis

Re: [Elecraft] KPA-1500 power reading ?

: Elecraft@mailman.qth.net Subject: [Elecraft] KPA-1500 power reading ? The KPA1500 is new to me and very happy with my purchase . I'm using the LP-100A watt meter and comparing it with the KPA-1500 they both read close enough 10 to 160 . On 6m I'm seeing a bigger spread  with the LP-100A re

Re: [Elecraft] KPA-1500 power reading ?

ehalf Of Ed Stallman Sent: Friday, February 5, 2021 12:23 PM To: Elecraft@mailman.qth.net Subject: [Elecraft] KPA-1500 power reading ? The KPA1500 is new to me and very happy with my purchase . I'm using the LP-100A watt meter and comparing it with the KPA-1500 they both read close enough

Re: [Elecraft] KPA-1500 power reading ?

Jim, using 4ft of low loss Davis RF Bury Flex between LPA and KPA , 6m is the one band with the biggest difference , KPA1500 reading 125 to 150 watts less . I've decided with the LP-100A in better line of site , I'm going with it . Ed N5DG On 2/5/2021 6:52 PM, Jim Brown wrote: On 2/5/2021 10

Re: [Elecraft] KPA-1500 power reading ?

On 2/5/2021 10:22 AM, Ed Stallman wrote: I'm using the LP-100A watt meter and comparing it with the KPA-1500 they both read close enough 10 to 160 . On 6m I'm seeing a bigger spread with the LP-100A reading 1500w the KPA-1500 is showing 1375w . I also have an LP100A inline between my amp and

Re: [Elecraft] KPA-1500 power reading ?

Lou , just checked again on the HF bands 80m LPA=1495 and KPA=1501 40m LPA=1476 and KPA=1421 6m LPA=1512 and KPA=1325 This is not concerning to me at all . My curiosity and a cold rainy told me to see how others compared . I suspect this is the case with any two watt meters . I know it's adj

Re: [Elecraft] KPA-1500 power reading ?

Ed Stallman-2 wrote > The KPA1500 is new to me and very happy with my purchase . I'm using the > LP-100A watt meter and comparing it with the KPA-1500 they both read > close enough 10 to 160 . On 6m I'm seeing a bigger spread  with the > LP-100A reading 1500w the KPA-1500 is showing 1375w . If y

[Elecraft] KPA-1500 power reading ?

The KPA1500 is new to me and very happy with my purchase . I'm using the LP-100A watt meter and comparing it with the KPA-1500 they both read close enough 10 to 160 . On 6m I'm seeing a bigger spread  with the LP-100A reading 1500w the KPA-1500 is showing 1375w . If you look at this in DB , it'

Re: [Elecraft] KPA 1500 fan speed at turn off

off. Node Red is free and the amp can be controlled from any web browser. 73 Dave wo2x -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Howard Sherer Sent: Thursday, January 21, 2021 8:19 AM To: elecraft Subject: [Elecraft] KPA 1500 fan speed at turn off Wouldn&#

Re: [Elecraft] KPA 1500 fan speed at turn off

I just keep it on until the temp dies down.  If I'm in a hurry to shut it off I turn the fans on manually to cool it faster. BillK3WJV On Thursday, January 21, 2021, 5:59:20 PM EST, Howard Sherer wrote: Wouldn't it be a good idea to keep the fan turned on in the KPA-1500 after you pow

[Elecraft] KPA 1500 fan speed at turn off

Wouldn't it be a good idea to keep the fan turned on in the KPA-1500 after you power it off till the internal temperature reaches its lower temp? Howard __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help

[Elecraft] KPA 1500 fan speed dwel time

On the latest firmware, what is the function of this menu item? __ 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

[Elecraft] KPA/KAT500 wanted

Looking for recent KPA500 and KAT500 to serve as backups. Please respond privately with age / serial number / revision level. Please include Fault Table for each unit. Shipping to 60175. Thanks! 73 Lyn, W0LEN < W0LEN (at) LNAINC (dot) com > __

[Elecraft] KPA-500 and KAT-500 For Sale

For Sale: KPA-500-K serial #29XX in excellent condition.original owner and non-smoking home.Amp is in good working condition. No scratches, scuffs or other cosmetic flaws.$1695 plus shipping and insurance. Also For Sale: KAT-500-F antenna tuner serial #19XX.In excellent condition cosmetically an

Re: [Elecraft] KPA 1500 efficiency

This is normal from theory. Input power increase as I*U. Output power increases as I*I*R. So at half input power one quarter output power. At 1/4 input power 1/16 output power. Two ways around, none implemented in KPA1500. Change transformer windings like in KX3, which is harder to do at high p

Re: [Elecraft] KPA 1500 efficiency

I would be concerned about reducing voltage for SSB and TX IMD. The NXP 1K50H devices are only biased at 1 amp each which is a bit low for optimal IMD as it is. SSB IMD could be improved by increasing bias to 2 amps per device. Since the bias is only present during TX the waste heat increase wou

Re: [Elecraft] KPA 1500 efficiency

Yes, I read the same. Lowering the PA voltage might be a bit difficult... 73,   Roy    K6XK On 11/13/2020 8:27 AM, Howard Sherer wrote: Reading the display on the KPA 1500 at various RF output levels shows an efficiency as follows on 40M into a dummyload: 300W 23% 500W 27% 1000W 42% 1300

[Elecraft] KPA 1500 efficiency

Reading the display on the KPA 1500 at various RF output levels shows an efficiency as follows on 40M into a dummyload: 300W 23% 500W 27% 1000W 42% 1300W 48% 1500W 52% 1600W 54% Have other owners seen results like this? Do you think a firmware and menu item could be developed to increase

Re: [Elecraft] KPA-1500 No Power Out (TX LED Does Not Come On)

Try shorting the RCA connector on the amp and see if the TX light comes on. Load the KPA1500 utility and look at the log file. Look on the KPA1500 and see what frequency it thinks the amp is on. If it is out of band it will not TX. That is where I would start. Also check that all cables are

[Elecraft] KPA-1500 No Power Out (TX LED Does Not Come On)

Came out to the shack this morning and the KPA-1500 is not going into transmit. I verified that the PTT cable is shorting when the Flex 6600 goes into transmit. The amp operates properly otherwise. The ATU works, it shows the power out from the 6600, it just won't go into transmit (no Red TX

Re: [Elecraft] KPA

Or indeed, anywhere else in the world? UPS and Fedex operate in many countries. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ On 28/10/2020 0:55, Jim Brown wrote: On 10/27/2020 3:17 PM, John Altman wrote: My price is $1800 +shipping & insurance to you

Re: [Elecraft] KPA

__ 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: ht

Re: [Elecraft] KPA

On 10/27/2020 3:17 PM, John Altman wrote: My price is $1800 +shipping & insurance to your CONUSA QTH address. I DO NOT ship internationally. Just curious -- why are you unwilling to ship to AK or HI? The buyer is paying. 73, Jim K9YC __

[Elecraft] KPA

I am selling my personal KPA500 – it is in excellent condition, both operationally and cosmetically. I purchased it from the original owner in December of 2016. It has performed flawlessly. I am a very light user of all my equipment, especially the KPA500. I estimate there is less than 10 hour

Re: [Elecraft] KPA-1500: What is it telling me?

This seemed odd to me at first, also, but it really made sense as I was hopping all over the place during cqww this weekend, and could tell at a glance at kpa1500 remote or front panel what it was up to. Also, that I had missed training a few bins...yikes. Once you get used to it, it's the perfec

Re: [Elecraft] KPA-1500: What is it telling me?

73 de Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of N4ZR Sent: Sunday, October 25, 2020 14:47 To: Elecraft List Subject: [Elecraft] KPA-1500: What is it telling me? I have a dummy load on Ant 2 on my KPA-1500. When I have Ant 2 selected, on any

Re: [Elecraft] KPA-1500: What is it telling me?

BYP + IN means you have selected to have the ATU in-line but the antenna's SWR was so low that the ATU algorithm decided just to bypass the L and C components. Functionally, it's the same as BYP, but you know that the ATU is enabled. This is exactly what you should expect with a dummy load. 73, /

[Elecraft] KPA-1500: What is it telling me?

I have a dummy load on Ant 2 on my KPA-1500.  When I have Ant 2 selected, on any band I cannot select just "In."  When I hold the button to change ATU Mode, my only choices are BYP or BYP and IN both showing simultaneously.  What does the latter mean? -- 73, Pete N4ZR Check out the Reverse Bea

[Elecraft] KPA-1500: What is it telling me?

I have a dummy load on Ant 2 on my KPA-1500.  When I have Ant 2 selected, on any bandI cannot select just "In."  When I hold the button to change ATU Mode, my only choices are BYP or BYP and IN both showing simultaneously.  What does the latter mean? -- 73, Pete N4ZR Check out the Reverse Beac

[Elecraft] KPA-1500 ATU Problem?

As I tune across the band the ATU Tune LED flickers. This is not just at the band segments. ATU is working OK except some problem with ATU tune and my exciter. Richard *W7ZR* ex:5C5Z, CN2ZR, K2JSP, W6SBZ, W7KXR, K9ZIJ, W9KNF, W0KDF, W0MQU, J68ZR, KC6ZR, PJ4/W7ZR, KH2,W7ZR, KH6/W7ZR, V31ZR, VK4AA

[Elecraft] KPA 500

I recently say a listing for a used KPA500. I managed to lose the info. If it's still availably could you please let me have the info. I'm very interested. Pete Block W2MGE pete_bl...@comcast.net Thanks. _

[Elecraft] KPA-1500

Anyone using a KPA-1500 with a Zero-five 43' vertical...or any 43' vertical? Richard *W7ZR* ex:5C5Z, CN2ZR, K2JSP, W6SBZ, W7KXR, K9ZIJ, W9KNF, W0KDF, W0MQU, J68ZR, KC6ZR, PJ4/W7ZR, KH2,W7ZR, KH6/W7ZR, V31ZR, VK4AAZ, XE2DV *Be joyful in hope, patient in affliction, faithful in prayer* ___

Re: [Elecraft] KPA-1500/FlexRadio 6400

Hi Mike, This seems to be a duplicate post (see http://elecraft.365791.n2.nabble.com/KPA-1500-FlexRadio-6400-td7665007.html), though I'm not sure if your questions were fully answered the first time. First, to search the archives of this reflector, go to http://elecraft.365791.n2.nabble.com/Elecr

Re: [Elecraft] KPA-1500/FlexRadio 6400

Let me rephrase. It needs frequency CAT data if you do not want to transmit into a high SWR or wrong band filters, even for a few milliseconds. I would rather have my station preset the amp to the proper band filters and tuner L & C before transmitting ANY RF into it. This way if I see some

Re: [Elecraft] KPA-1500/FlexRadio 6400

On 9/15/2020 7:19 PM, Dave wrote: Actually the KPA1500 needs frequency tracking for the internal antenna tuner. NO, it does not. See my previous post. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo

Re: [Elecraft] KPA-1500/FlexRadio 6400

On 9/15/2020 7:14 PM, Michael Walker wrote: The Band data is the only thing that the KPA500 requires to operate. Actually, beginning with the tuner that goes with the K3 and their KPA amps do NOT need band data -- they detect frequency with as little as a 35 wpm dit or a tap on the mic and

Re: [Elecraft] KPA-1500/FlexRadio 6400

oppsss... my bad! I saw KPA500 (not 1500). Sorry about that. However, the cabling is the same. :) Mike va3mw On Tue, Sep 15, 2020 at 10:19 PM Dave wrote: > Hi Mike > > Actually the KPA1500 needs frequency tracking for the internal antenna > tuner. > > The info I posted should help Mike. He

Re: [Elecraft] KPA-1500/FlexRadio 6400

Hi Mike Actually the KPA1500 needs frequency tracking for the internal antenna tuner. The info I posted should help Mike. He is also welcome to contact me direct and I can assist. 73 Dave wo2x Sent from my waxed string and tin cans. > On Sep 15, 2020, at 10:17 PM, Michael Walker wrote: >

Re: [Elecraft] KPA-1500/FlexRadio 6400

Mike I keep reading what you wrote, but how can you tell the difference? The Band data is the only thing that the KPA500 requires to operate. It really doesn't care about the exact frequency. If you change bands on the 6400 and the KPA500 tracks from 1 band to another, then your installation is

Re: [Elecraft] KPA-1500/FlexRadio 6400

Are you using the KXUSB cable from the amp transceiver port to back of Flex USB? Make sure you are in the transceiver port on amp and not AUX port. On Flex USB cable setup make sure to enable Auto Report. Also select advanced and set baud to 38400, 8, none, 1, and flow control none. Cycle amp

[Elecraft] KPA-1500/FlexRadio 6400

This is my first post. I am not sure if or where the search function is located. I am running a KPA-1500 and a FlexRadio 6400. The amplifier recognizes the band that the Flex is tuned to but it doesn’t recognize the frequency. Any help would be appreciated. I am not technically proficient w

Re: [Elecraft] KPA-1500 SWR fault above 700-800 watts on 160m

I’ve seen no mention of modeling and/or measurements performed on any of these antennas to see if they are within the match range of the KPA1500. Jim ab3cv On Sep 4, 2020, at 2:29 AM, Victor Rosenthal 4X6GP wrote: I had an interesting experience trying to use a balun in a very demanding s

Re: [Elecraft] KPA-1500 SWR fault above 700-800 watts on 160m

I had an interesting experience trying to use a balun in a very demanding situation. I'll describe it, and at the end I have a question. Antenna was a dipole with total length of 10m fed with approximately 480 ohm open-wire line. Line length was 10m. I was trying to use this antenna on 40m wit

Re: [Elecraft] KPA-1500 SWR fault above 700-800 watts on 160m

I do the same Rick. However, when new firmware comes out, I update my manuals appropriately. Elecraft allows that, unlike Icom, Kenwood, or Yaesu. I wonder why? Refreshing my own "firmware" is much more challenging, especially for things not refreshed by use. Many questions on this reflector a

Re: [Elecraft] KPA-1500 SWR fault above 700-800 watts on 160m

Being able to use a without reading the manual is actually one of my personal tests of the user interface.  Jump in, see how it plays and what is presented to make changes if needed. The K3 easily passes that test (former Kenwood user; Elecraft is similar in format), HOWEVER that is on the su

Re: [Elecraft] KPA-1500 SWR fault above 700-800 watts on 160m

That is not true, except at full power. The manual clearly states power levels at 10:1, 5:1, and 4:1 VSWR's for different frequency ranges. RTFM is a wonderful acronym to follow. I'm always surprised to read "I think..." "I recall..." and similar posts to answer a poster's question. Most of us

Re: [Elecraft] KPA-1500 SWR fault above 700-800 watts on 160m

Hi Jim Thanks for the new link. I must say we made several big chokes using the "old" method and our analyser wasn't good enough to measure the common mode impedance, so our conclusion was they were all above the analyser limit of several thousand ohms. I'm about to make a single core choke, s

Re: [Elecraft] KPA-1500 SWR fault above 700-800 watts on 160m

On 9/3/2020 4:21 AM, CUTTER DAVID via Elecraft wrote: I use K9YC-style chokes, eg several turns on 240-31 core, or, if it's really bad, several turns on several cores using 7" diameter turns (from memory, check his cookbook). I'm told this is cheaper and better than anything you can buy. Of

Re: [Elecraft] KPA-1500 SWR fault above 700-800 watts on 160m

created, which > > caused the heating effect. Another theory is that it is just a crappy piece > > of cable and it just failed. > > > > Unfortunately this is not the sort of fault that can be detected in its > > development stage by a low power antenna analyser, it nee

[Elecraft] KPA-1500 SWR fault above 700-800 watts on 160m

KPA1500 tuner is rated for maximum antenna SWR of just 3 to 1. 73,  Roy  K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net

Re: [Elecraft] KPA-1500 SWR fault above 700-800 watts on 160m

at can be detected in its > development stage by a low power antenna analyser, it needs a fair amount of > power. > > This long tale may just give you some clues to your possible issue on 160m > although on a different power scale.. > > 73, > > Alan. G4GNX > &g

Re: [Elecraft] KPA-1500 SWR fault above 700-800 watts on 160m

er scale.. 73, Alan. G4GNX -- Original Message -- From: "Ken Ramirez de Arellano" To: elecraft@mailman.qth.net Sent: 02/09/2020 22:41:30 Subject: [Elecraft] KPA-1500 SWR fault above 700-800 watts on 160m Every bit of antenna hardware ( coax, balun, insulators, etc. hav

Re: [Elecraft] KPA-1500 SWR fault above 700-800 watts on 160m

If your Clipperton amp doesn't have the same problem then it does indeed point to the KPA1500. I don't own a KPA1500, but a quick look at the online manual shows that the tuning unit is an L-Network.  Depending upon the load the unit is trying to match, an L-Network can require a very large

[Elecraft] KPA-1500 SWR fault above 700-800 watts on 160m

Every bit of antenna hardware ( coax, balun, insulators, etc. have been changed out or proven good. Connections are all solid. My KPA1500 will transmit above 800 watts for about 15-30 seconds and then the SWR jumps up and it faults out for high VSWR. I can run 1500 watts on all the other “Legacy”

[Elecraft] KPA-1500 Antenna Tuner "Hunting"

I had a similar issue, and received this reply from Dick Dievendorff. I hope it helps you, as it did me. Forwarded with Dick's permission. 73 Eric WD6DBM On Wed, Nov 13, 2019 at 6:14 AM, Dick Dievendorff wrote: Hi, Eric! There is an ATU MODE SWITCH menu setting that might influence this. Wi

Re: [Elecraft] KPA-1500 Antenna Tuner "Hunting"

Pete - I don't have a KPA1500, but do have a KPA500 with a KAT500... and the first thing that comes to mind is manual vs auto on the tuner... IF they can be selected on the '1500. With the KAT500 after the tuner has found a matching solution for each band segment, I then put the tuner in manual,

[Elecraft] KPA-1500 Antenna Tuner "Hunting"

Last night in NAQP I noticed that on 80 meters my tuner would hunt endlessly, calling for tune power, then finishing, then asking again with the ATU IN LED blinking.  I retrained the memory on each relevant band segment, and that stopped the hunting, but I noticed that instead of QSYing smoothl

Re: [Elecraft] KPA 1500 HELP!!

20 2:07 PM To: Dr. William J. Schmidt ; elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA 1500 HELP!! When I disconnect the red and black cable from the PS and turn on the PS and amp the HV/Supply Light stays GREEN!! I tried to reseat both ends of the power cable but problem still exists!! as

Re: [Elecraft] KPA 1500 HELP!!

Groups.IO. email: b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Salvatore ["Ted"] K2QMF Sent: Saturday, July 25, 2020 12:39 PM To: Elecraft Support ; elecraft@mailman.qth.net Subject: [Ele

Re: [Elecraft] KPA 1500 HELP!!

K2QMF Sent: Saturday, July 25, 2020 1:39 PM To: Elecraft Support ; elecraft@mailman.qth.net Subject: [Elecraft] KPA 1500 HELP!! Hello, I was in the IOTA Contest and a got a Fault message"FAULT: 50V Supply 0.0Volts"!!! I can't reset this Fault!! And the HV/Supply Light on the PS is RED! I

Re: [Elecraft] KPA 1500 HELP!!

Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Salvatore ["Ted"] K2QMF Sent: Saturday, July 25, 2020 10:39 To: Elecraft Support ; elecraft@mailman.qth.net Subject: [Elecraft] KPA 1500 HELP!! Hello, I was in the IOTA Contest and a got a Faul

[Elecraft] KPA 1500 HELP!!

Hello, I was in the IOTA Contest and a got a Fault message"FAULT: 50V Supply 0.0Volts"!!! I can't reset this Fault!! And the HV/Supply Light on the PS is RED! I tried turning the PS off and back on but no change!! Any help or suggestions much appreciate... 73, Ted  K2QMF __

Re: [Elecraft] KPA-1500, too?

Why ?  I may have missed something, but my KPA-1500 seems to display all of the same info simultaneously. 73, Pete N4ZR Check out the Reverse Beacon Network at , now spotting RTTY activity worldwide. For spots, please use your favorite "retail" DX cluster. On 7/14/2020

Re: [Elecraft] KPA-1500, too?

I am usingga Raspberry Pi on my network to monitor and control the KPA1500 remotely. It also allows rotor control and AC power control turn turn various equipment on & off. This is accessible from any web browser, local or remote including smartphones. Definitely helps running remote. In the sh

[Elecraft] KPA-1500, too?

Perhaps KV5J can come up with an amplifier monitor for the KPA-1500, too? Hope so! K4TM Sent from Clovelly Cottage II, home of amateur radio station K4TM and the most creative Sue Cary, in the foothills of the beautiful Blue Ridge mountains of Virginia. > On Jul 14, 2020, at 2:29 PM, elecra

Re: [Elecraft] KPA-1500 Pure Signal Output

LoL. I show people the size of R8 I believe it is next to a penny and they are “how did you replace that?” The answer is “carefully...” Thanks for a great amp Wayne! Dave wo2x Sent from my iPad > On Jul 3, 2020, at 12:02 AM, Wayne Burdick wrote: > >  >>> On Jul 2, 2020, at 8:30 PM, rocke.

Re: [Elecraft] KPA-1500 Pure Signal Output

> On Jul 2, 2020, at 8:30 PM, rocke...@gmail.com wrote: > If you think I am kidding about the size of the chip resistor I can send a > picture to anyone interested. I did take a picture next to a 2016 penny for > reference 😊 You think that's small...in your cell phone you'll find parts 1/10th

Re: [Elecraft] KPA-1500 Pure Signal Output

th.net On Behalf Of char...@k5ua.com Sent: Thursday, July 2, 2020 4:12 PM To: Elecraft@mailman.qth.net Subject: [Elecraft] KPA-1500 Pure Signal Output Does anyone know if the RF coupler output in the KPA-1500 is functional yet? Cha

[Elecraft] KPA-1500 Pure Signal Output

Does anyone know if the RF coupler output in the KPA-1500 is functional yet? Charles K5UA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mai

Re: [Elecraft] KPA 500 Codan Envoy

ing List Subject: Re: [Elecraft] KPA 500 Codan Envoy That is not a Ham radio. Is it legal to use an amplifier type accepted for Ham radio for other services? 73, Mark W7MLG On Mon, Jun 29, 2020 at 6:49 AM Bob Morgan wrote: I would like to know if any in the group has used the KPA 500 with a Codan Env

Re: [Elecraft] KPA 500 Codan Envoy

dio not designated for HAM use.obviously, NOT the case. 73, Charlie k3ICH -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Lyn Norstad Sent: Monday, June 29, 2020 10:47 AM To: 'Mark Goldberg' ; 'Bob Morgan' Cc: 'Elecraft Mailing List' Sub

Re: [Elecraft] KPA 500 Codan Envoy

t; From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mark Goldberg > Sent: Monday, June 29, 2020 9:09 AM > To: Bob Morgan > Cc: Elecraft Mailing List > Subject: Re: [Elecraft] KPA 500 Codan Envoy > > That is not a Ham radio. Is it legal

Re: [Elecraft] KPA 500 Codan Envoy

AM To: Bob Morgan Cc: Elecraft Mailing List Subject: Re: [Elecraft] KPA 500 Codan Envoy That is not a Ham radio. Is it legal to use an amplifier type accepted for Ham radio for other services? 73, Mark W7MLG On Mon, Jun 29, 2020 at 6:49 AM Bob Morgan wrote: > > I would like to know if any

Re: [Elecraft] KPA 500 Codan Envoy

That is not a Ham radio. Is it legal to use an amplifier type accepted for Ham radio for other services? 73, Mark W7MLG On Mon, Jun 29, 2020 at 6:49 AM Bob Morgan wrote: > > I would like to know if any in the group has used the KPA 500 with a Codan > Envoy 2. Any help would be much appreciated

[Elecraft] KPA 500 Codan Envoy

I would like to know if any in the group has used the KPA 500 with a Codan Envoy 2. Any help would be much appreciated. Bob Morgan KJ4SV 865 207 9568 -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: htt

Re: [Elecraft] KPA-500 clicking as the temperature changes

I have KPA500 SN 00149. Mine is a kit and it hasn’t had a lid off since I finished building it July 2, 2011, almost 9 years ago,. Like the rest, I heard clicking for a while and all of a sudden it stopped or I just no longer hear it. I think it stopped. Whatever was clicking found its happy

Re: [Elecraft] KPA-500 clicking as the temperature changes

I think it’s the “Z” bracket inside. Sent from my iPhone ...nr4c. bill > On Jun 25, 2020, at 10:12 AM, Howard Sherer wrote: > > I have had a KPA500 for many years and the only annoying thing is that I > hear clicking of the metal case parts as it heats up and cools down. all of > the case sc

[Elecraft] KPA-500 clicking as the temperature changes

I have had a KPA500 for many years and the only annoying thing is that I hear clicking of the metal case parts as it heats up and cools down. all of the case screws are tight and I had this problem from the early days even before I had to remove the RF deck and send it to the factory for minor repa

Re: [Elecraft] KPA 1500 not communicating with my PC

What OS.? Restart computer. Then restart the amp. Sent from my iPhone ...nr4c. bill > On Jun 14, 2020, at 2:12 PM, Cody C via Elecraft > wrote: > >  > I tried to perform aFirmware update on my KPA 1500 and my PC no longer is > communicating with theamp. I tried a new cable, I also down

Re: [Elecraft] KPA 1500 not communicating with my PC

Did you try simply rebooting your PC before connecting the KPA? Grant NQ5T Sent from my iPhone > On Jun 14, 2020, at 2:11 PM, Cody C via Elecraft > wrote: > >  > I tried to perform aFirmware update on my KPA 1500 and my PC no longer is > communicating with theamp. I

[Elecraft] KPA 1500 not communicating with my PC

I tried to perform aFirmware update on my KPA 1500 and my PC no longer is communicating with theamp. I tried a new cable, I also downing the utility program on my laptop stillno joy. My last attempt was to run the remote software program. I was able toconfigure it but I don't see a way to updat

Re: [Elecraft] KPA-1500 faulting on 6m; SWR issues

I am not familiar with the KPA1500 but I am wondering if the tuner is causing the poor SWR on your good 6m antenna? Is it bypassed? John KK9A Peter Dougherty w2irt wrote: I have never driven the amp with 90 Watts. Ever. The 90W figure is what comes out of the K3s *after* the amp has t

Re: [Elecraft] KPA-1500 faulting on 6m; SWR issues

On 5/31/2020 9:54 AM, Jim Miller wrote: Have you vetted your feedline at 1500w? Many times something might be good at low power and fail at 1500. This is good advice. Guys who do lots of portable setup say to always check the coax first, which mostly means check for a connector that's bad or

Re: [Elecraft] KPA-1500 faulting on 6m; SWR issues

Peter, how old is your amp? I have s/n 153, and had a similar issue on 6. One of the torroids in, I believe, the low pass filter, ultimately burned out. Smoke smells from your amp are not pleasant. The factory determined that the torrid was delivered out of spec, and it was replaced. I suggest you

Re: [Elecraft] KPA-1500 faulting on 6m; SWR issues

Rule out or in the feed line. Put the amp into a dummy load and see if it trips. Good Luck. 73/Gary W2CS > On May 31, 2020, at 12:54 PM, Jim Miller wrote: > > I run 1500w for JT65 EME. No problems. My antenna measures 1.4:1 on the > KPA1500 swr meter and therefore never engages ATU. > > Have

Re: [Elecraft] KPA-1500 faulting on 6m; SWR issues

I run 1500w for JT65 EME. No problems. My antenna measures 1.4:1 on the KPA1500 swr meter and therefore never engages ATU. Have you vetted your feedline at 1500w? Many times something might be good at low power and fail at 1500. neither the AA230 or K3s will stress such a feedline. I believe the

[Elecraft] KPA-1500 faulting on 6m; SWR issues

Hi all (and sorry about the blank post-I don't know what happened there). I am experiencing a continuing and repeatable problem with my KPA-1500 on 6m. With the amp in bypass I am able to operate normally with my K3s, but the amp's meter is showing a 1.8 to 2:1 SWR on that band, despite measur

[Elecraft] KPA-1500 hard faulting on 6m

__ 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: ht

Re: [Elecraft] KPA-1500 power supply fan noise

KPA-1500 to simply "check-the-band". 73, Charlie k3aICH ' -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Eric Swartz WA6HHQ - Elecraft Sent: Saturday, May 23, 2020 11:53 AM To: Larry (K8UT) Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K

Re: [Elecraft] KPA-1500 power supply fan noise

Thanks Eric. I have s/n 423 and will email support. Dave wo2x Sent from my iPad > On May 23, 2020, at 9:07 PM, Eric Norris wrote: > > I believe he is talking about PS fans, which is not on the menu. However, > there is a mod kit from Elecraft that includes the resistor. It is very > easy to

<    1   2   3   4   5   6   7   8   9   10   >