[Elecraft] Spectrogram for MAC?

What’s the current program folks are using for K2 alignment that works on a Mac? After 22 years my serial #1010 needs a touchup! Dan Presley N7CQR n7...@arrl.net __ Elecraft mailing list Home:

Re: [Elecraft] Radials

And it grows vigorously over sidewalks, mowing strips, and driveways, and up the side of the house. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County formerly from Houston TX, "St. Augustine capital of the world" Jim Spaulding wrote on 1/17/2022 2:12 PM: If you are not familiar with St

Re: [Elecraft] On ground - in ground radials

I used three radials (70-foot long) made of 2-foot wide chicken wire (think its galvanized steel) on my 600m inverted-L. Fourth radial was the shield of my 1-5/8 inch diameter Heliax line that ran 120-feet from the supporting tower to the shack in our house. I ran a circle of bare No. 12

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

Re: [Elecraft] On ground - in ground radials

At my last QTH (I moved a week ago), I had 3000' feet of #14 THHN under my 30' vertical. I paid about $30 per 500' roll. Putting them down was a relative piece of cake. I cut the grass as short as my mower would permit, then laid the radials on the ground, securing them with sod stables as often

[Elecraft] Radials

I am blessed to have mostly St Augustine in my yard, but native Buffalo in the far back areas. I used an edger with two blades to cut a slot in the St Augustine down to ground level, then pushed the radials in with a homemade tool of aluminum channel. The radials disappeared within a few

Re: [Elecraft] On ground - in ground radials

I found Lots of SNAKES in Texas ! WA6VAB Ray K3 From: Fred Jensen Sent: Monday, January 17, 2022 1:34 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] On ground - in ground radials Yes.  A long time ago on the engineering crew at KSBY-TV, the station would rent us out to some of

[Elecraft] Clickable P3 Desktop Window

Hello, To follow up on a recent posting asking about the P3 video display as a dedicated display within Windows, I have been testing one solution which gives me a scalable, moveable P3 display. It is necessary to have the SVGA P3 option installed. I use a small VGA to HDMI converter which then

Re: [Elecraft] On ground - in ground radials

Yes.  A long time ago on the engineering crew at KSBY-TV, the station would rent us out to some of the AM stations who did not have a resident engineer, usually when something quit or when their PoP came due.  Mostly 5 and 10 kW, usually directional, at least at night.  These stations were

Re: [Elecraft] Elecraft KPA500 sn 1910 dead, update.

Call tech support? On 1/17/2022 12:57 PM, Sam Sargent via Elecraft wrote: Elecraft KPA500 sn 1910 dead. UPDATE 12/17/21 First. Thanks to everyone who has responded to mypost.  I have read all comments withinterest and have responded to several folks who offered ideas that I havetried. 

Re: [Elecraft] Elecraft KPA500 sn 1910 dead, update.

Did you get this email?  The parked green and red wires and the connected yellow wire should have voltage with only the rocker switch on the back engaged.  These are connected to the secondary of T1. If you don't have any voltage, I'd suspect the fuse/switch module. You can unplug the module

Re: [Elecraft] On ground - in ground radials

Just out of high school, I had a summer job at WSAZ, a 5-kw with a 4-tower array, with the same ground screen/raidal configuration on each tower, silver-soldering those radials. 120 radials was a legal requirement of FCC Rules, and was primarily for standardization of performance. 73, Jim

Re: [Elecraft] Elecraft KPA500 sn 1910 dead, update.

A bit of a long shot - I presume you’ve checked the cover interlock switch? 73, Alan - G4GNX > On 17 Jan 2022, at 19:57, Sam Sargent via Elecraft > wrote: > > > Elecraft KPA500 sn 1910 dead. > > UPDATE 12/17/21 > > First. Thanks to everyone who has responded to mypost. I have read all

Re: [Elecraft] On ground - in ground radials

On 1/17/22 at 10:52 AM, w3tb@gmail.com (Ted Edwards W3TB) wrote: > Good methods for getting the wire down. > Separate Question: What about using an insulated wire that way? K9YC recommends : Guidelines for All Radials • Insulated wire holds up longer •

Re: [Elecraft] Elecraft KPA500 sn 1910 dead, update.

Not sure if this has been suggested: did you check the fuses on the power supply board? Those will kill the LV supplies and will keep things from powering up. Ken K6MR From: elecraft-boun...@mailman.qth.net on behalf of Sam Sargent via Elecraft Sent:

[Elecraft] Elecraft KPA500 sn 1910 dead, update.

Elecraft KPA500 sn 1910 dead. UPDATE 12/17/21 First. Thanks to everyone who has responded to mypost.  I have read all comments withinterest and have responded to several folks who offered ideas that I havetried.  Thank you for trying to help. SECOND. Here is a bit of extra info that I

Re: [Elecraft] KRC2 question

There is no “power off” indication sent to the Auxbus from the K3 or K4, so no, there isn’t a direct way for the KRC2 to know if the radio is off. Having said that, my KRC2 is powered through a relay that is controlled by the K3’s +12V out jack. It is powered on with the K3 and likewise powered

Re: [Elecraft] Elecraft KPA500 sn 1910 dead

I would not go by this. Many, if not most, KPA500s do not have noticeable hum when powered. Neither of mine do except for once in a while when the line voltage increases for a short time. If yours does have noticeable him, you may want to check the tightness of mounting nut for the power

[Elecraft] FW: [POSSIBLE SPAM] Re: On ground - in ground radials

Its properly called circulating currents. Imagine two wires same length same signal. If they touch at the same place on both wires, same phase and amplitude, no issue. Now a different experiment... one of the wires is straight, the other is folded so that you can touch them at different

Re: [Elecraft] On ground - in ground radials

Mike, When I was an AM radio broadcast engineer in the 60s & 70s, we used a copper screen for the first 20' to 50' around the tower base and silver soldered all the 1/4 wavelength radials to the common point straps and several places along the screen. This was in Florida with sandy soil. I seemed

Re: [Elecraft] On ground - in ground radials

A well known 9 lander lid uses chicken wire for his 160 antenna and it works very very well.  I am not sure what effect crossing the wires has.  Has anyone done any real testing of this or is it just theory or a wives tale?  Did he stumble upon the holy grail of radials? Most of the results

Re: [Elecraft] KPA1500 problem

I have the similar problem with one of my 1500 amps. Elecraft says it is a relay that is bad. I do need to get it fixed, Larry k6ro -Original Message- From: Andy Durbin Sent: Monday, January 17, 2022 7:20 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA1500 problem "No, RX

Re: [Elecraft] On ground - in ground radials

Good methods for getting the wire down. Separate Question: What about using an insulated wire that way? On Mon, Jan 17, 2022 at 9:24 AM Gary Peterson wrote: > A friend was installing a homebrew, two tower, vertical directional array > in his back yard. His method of placing the copper wire

[Elecraft] For Sale: Elecraft SP-3 Speaker (for K3s)

I have two Elecraft SP-3 speakers for sale which have not been used; they were purchased for a special contest station which, thanks to the pandemic, never materialized. Probably a good thing as our design ideas for that have improved. The speakers match the K3s to the letter. Price is $250

[Elecraft] On ground - in ground radials

A friend was installing a homebrew, two tower, vertical directional array in his back yard. His method of placing the copper wire radials below the surface of the ground was quite unusual. He slowly crept along the ground on his hands and knees, while pushing a skil-saw, with carbide blade,

Re: [Elecraft] KPA1500 problem

"No, RX audio just appears greatly attenuated - acting like the antenna is disconnected. There is still the ambient hiss from the K3 speaker." Isn't that exactly what you would expect to hear if the amplifier was spuriously keyed but the K3 was not keyed? All it would take is a faulty keying

[Elecraft] KPA500 Remote Utility

I have been using the KPA500 remote utility for a couple of years with good success and suddenly unable to communicate with the KPA. I am using the microbit RRC system to operate my station remotely. I am not immediately suspecting those units and everything is working except the communication

Re: [Elecraft] KPA1500 problem

Hi Andy, No, RX audio just appears greatly attenuated - acting like the antenna is disconnected. There is still the ambient hiss from the K3 speaker. The symptom reminds me of a problem I has with my Alpha 86 that ended up being a dirty T/R relay. He’s close to end of warranty so he probably

[Elecraft] KPA1500 problem

"A buddy of mine is having a problem with his KPA1500 where the receive path is cutting out intermittently when he switches to OPER. It comes back when he switches back to STBY. This occurs occasionally, sometime it works fine. Any comments?" Does the "keyed" indicator change at the same time

[Elecraft] KPA1500 problem

A buddy of mine is having a problem with his KPA1500 where the receive path is cutting out intermittently when he switches to OPER. It comes back when he switches back to STBY. This occurs occasionally, sometime it works fine. Any comments? 73, Bill WE5P Comfortably Numb

Re: [Elecraft] Elecraft KPA500 sn 1910 dead

When the rear power switch is turned on, you should hear a hum from the transformer. The noise level from my KPA500 is quite audible from 2 or 3 feet away with everthing else turned off. If you don't hear the hum, it's likely there isn't power reaching the transformer. 73 Dave G4AON