Re: [Elecraft] KPA1500 Power Supply noise

I used to maintain computers used by farmers. I’m surprised they didn’t plant crops in them. There was enough soil there. Floppy disks (this was a long time ago) were unusable due to the abrasive action of the dirt. Victor 4X6GP > On 28 Mar 2021, at 4:24, Steve Hall <99sun...@gmail.com>

[Elecraft] I’m embarrassed....my KPA500

It was in DEMO mode 臘‍♂️ Works like a champ now. Thanks for the input, and I learned something today. Best 73, Tom W0XXX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

[Elecraft] Elecraft CW Net Announcement

Good Evening,    The rain has been falling less often.  Today there was sun for much of the day.  I followed the eastern edge of my property from corner pole to corner pole.  This was next to impossible before they thinned the forest.  Bright green moss dominated the scene. It is too early

Re: [Elecraft] KPA1500 Power Supply noise

Regarding placement of the KPA1500 power supply. After repairing and maintaining residential home computers professionally for several years, be advised that floor placement will allow 5X the dust to be sucked into the unit. Units with air flow in and out are like vacuum cleaners. I recommend

Re: [Elecraft] Kpa500 not playing with my IC-7600

Tom, While I do not have an IC-7600 I do use an IC-7610 with a KPA500; the cable should be the same. I use a DIY band data cable to connect the IC-7610 to the KPA500 and it has worked for almost three years. I'm curious as to the exact part numbers of the cables you purchased from the two

Re: [Elecraft] Questions on KXBC3 charging mechanism

I think this is answered in the manual. For 2500 mAh cells, this is on page 4. The KXBC3 charges at 200 mA throughout the charging time set, suggesting that 2000 mAH cells would be charged in 10 hours (referred in battery literature as a C/10 rate). However, the charging process is not 100%

Re: [Elecraft] How and How Often to Clean KPA-1500 Cooling Systems?

I would encourage people to get the gear off the floor.  My computers that were on the floor got far more dirty than when I had them setting up higher. YMMV W0MU On 3/27/2021 4:22 PM, Ken K6MR wrote: As you know, I run my amp in a single amp, SO2R configuration. During a heavy 2BSIQ

[Elecraft] Questions on KXBC3 charging mechanism

Hi, Searching the web and searching the mail archive didn't find the result I was looking for, but I found a number of broken links pointing to now-defunct Yahoo groups on this matter.. I'm confused on the charging method used on the KXBC3 charger. The standard low-current charge method for

Re: [Elecraft] How and How Often to Clean KPA-1500 Cooling Systems?

As you know, I run my amp in a single amp, SO2R configuration. During a heavy 2BSIQ session on RTTY, temps reach 90 deg C. Fans go to 5 occasionally. Not a problem. Don’t worry. My power supply does get quite the dust bunny on top. I just hit it with the vacuum every week when doing the

Re: [Elecraft] How and How Often to Clean KPA-1500 Cooling Systems?

I'm uncomfortable with temp above 70C.  I infer from the manual that the displayed temp is that of the final transistor heat sink, and they say it will hard fault at 112C.  Not in my shack!  Still looking for an answer to the cleaning question, though, particularly for the power supply. 73,

Re: [Elecraft] How and How Often to Clean KPA-1500 Cooling Systems?

On 3/27/2021 9:23 AM, N4ZR wrote: The other day I noticed some buildup of dust on the top vents of my power supply. Neighbor K6XX is the mfg engineer for both of Elecraft's amps. Bob lost everything (except one of his towers) in a big wildfire this summer, along with three other hams I know.

[Elecraft] Kpa500 not playing with my IC-7600

Good day, and thanks for reading. My newly acquired KPA500 doesn’t want to play with my IC-7600. In operate mode when I key the radio, the LEDs on the KPA500 display solid into the yellow, and there is no output. The amp is not faulting. I’m using an Icom 7 pin DIN cable (two actually from

Re: [Elecraft] K3 - no output power

Hi all, just wanted to let you know that my K3 is back again with full output power. We found the Diode D1 on the LPA board. On the anode side, it had shown full power, on the other side, nothing. When unsoldering it, it was already very loose. The diode itself was intact, but had no contact

Re: [Elecraft] K3 PA to Motherboard Pin Connection Workaround Mod

Thanks Alan and Ken, K6MR...have what I need from both. Great help...thank you Mike K7PI -Original Message- From: Alan - G4GNX Sent: Saturday, March 27, 2021 10:24 AM To: ex...@comcast.net Subject: Re: [Elecraft] K3 PA to Motherboard Pin Connection Workaround Mod Is the attached

[Elecraft] How and How Often to Clean KPA-1500 Cooling Systems?

The other day I noticed some buildup of dust on the top vents of my power supply.  I used a vacuum on them and was surprised by how much appeared to come out from inside.  This raised a question - how often is it recommended to clean the cooling systems of the amp and its power supply, and

Re: [Elecraft] KPA1500 Power Supply noise

Not heard here, although my KPA-1500 gets fairly heavy use.  Power supply is on the floor, which no doubt helps with noise. 73, Pete N4ZR Check out the new Reverse Beacon Network web server at . For spots, please use your favorite "retail" DX cluster. On

[Elecraft] K3 PA to Motherboard Pin Connection Workaround Mod

Will someone on the list who has the workaround mod supplied by Elecraft Support to bypass or repair the pin connections of the PA to motherboard on the K3 email them to me? Thanks Mike K7PI ex...@comcast.net

[Elecraft] KPA1500 Power Supply noise

My KPA1500 Power Supply is making a noise that has gotten progressively louder over time when I transmit. It sounds like a hissing (but it is not arcing) when I transmit. The noise is modulated by SSB speech or CW or digital modes keying, louder at higher power levels now during the CQWW WPX Phone

[Elecraft] 75 meter Net and Location 01:00 Sunday Night/Monday

I am moving us a small distance away... Please take note of 3.775 3.775 at 01:00 UTC AND there is the chance someone will be there ... 75m is funny that way Sunday night in the US and Monday morning in UTC Land Keep smiling and be safe "See" you on the Nets 73 Paul Van Dyke KB9AVO

[Elecraft] KPA500 Bias-set Procedure

I am looking for the procedure to set the bias after replacing the finals in the KPA500. Any advice would be most appreciated. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: