Re: [Elecraft] K2 filter optimisation

Thankyou to everyone for ideas. In the end, I found a version of Spectrogram16 which worked first time under Windows 10 running with Parallels on the Mac. I had forgotten how much of a joy it was to use when setting up the filters. 73 Ian On 22 Feb 2021 at 01:52:44, Jon wrote: > Hi all... >

Re: [Elecraft] K3s USB audio problem; both channels identical

wills - Original Message - From: h...@kpnplanet.nl To: "Elecraft" Sent: Saturday, February 20, 2021 2:45:16 AM Subject: [Elecraft] K3s USB audio problem; both channels identical Hi Elecrafters, I found out that I lost the audio of the MAIN RX on the USB port of my K3s (with SUB RX

[Elecraft] Elecraft CW Net Report

Good Evening,    Both bands were OK.  Twenty meters was quite active with DX contesters.  I had to move down to find a frequency.  Holding it was not easy.  QSB was mild on twenty meters, deeper on forty. Weather reports came in milder than last week.  Sun most places, it even came out here

Re: [Elecraft] K4 10MHz Reference level??

We’re going to characterize this and add it to the spec. Wayne N6KR elecraft.com > On Feb 21, 2021, at 6:42 PM, Mark Musick wrote: > > I would suspect it is the same as the K3/K3S. > > Mark, WB9CIF > > -Original Message- > From: elecraft-boun...@mailman.qth.net On > Behalf

Re: [Elecraft] An FT8 Radio- just dreaming

Doug: > On Feb 21, 2021, at 9:36 PM, Doug Millar via Elecraft > wrote: > > I have been wondering for some time- How will FT8 change ham radio equipment? > Right off I imagine a radio and computer in one box maybe with the display. > (FT8 should vastly simplify the first interface with the

Re: [Elecraft] An FT8 Radio- just dreaming

Are you talking barebones FT8, or one of the extensions that allows freeform conversation? Are you planning on relegating CW/SSB/etc. to a "nice-to-have" usability-wise, or are you trying to keep those usable while making digital modes more intuitive and straightforward? I would want both the

[Elecraft] An FT8 Radio- just dreaming

I have been wondering for some time- How will FT8 change ham radio equipment?  Right off I imagine a radio and computer in one box maybe with the display. (FT8 should vastly simplify the first interface with the radio, with menus reaching deeper into its control. Most of today's designs are not

Re: [Elecraft] K4 10MHz Reference level??

I would suspect it is the same as the K3/K3S. Mark, WB9CIF -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of w4sc Sent: Saturday, February 20, 2021 08:15 To: elecraft@mailman.qth.net Subject: [Elecraft] K4 10MHz Reference level?? Hello Elecraft K4 design team.

Re: [Elecraft] Reminder of the 80 Meter net tonight at 0100 UTC on 3.815

We had a lovely rump net on 3.825. Here are the calls and signal strengths in New Hampshire k2vjk s9+5 wb9jnz s9 - s7 with 100w radio k8nu s7 wm6p s7 n9cpd s7 wy3t s6 wd8paj s7 dink wk4odl s7 73 Bill AE6JV On 2/21/21 at 6:09 PM, pvandyke1...@gmail.com (Paul Van Dyke) wrote: We will see if

[Elecraft] K2 filter optimisation

Hi all... Another choice might be something called REW (Room EQ Wizard) which is an AMAZING, free program that is Java based, so it should work across different platforms.  There is a Mac dedicated version,  but I know little about Macs,  whether yours might be compatable or not. It is a

Re: [Elecraft] Sudden KPA1500 power reduction

1. Depends. My KPA1500 has same NXP 1K50H devices as my PG-XL. (yes, I have both). I heard some KPA1500s had different devices than the NXP but cannot confirm that 2. Yes. Shipping for a while now. Here's my comparison of the two since I own both. The KPA1500 fan noise is better to my ears

[Elecraft] Reminder of the 80 Meter net tonight at 0100 UTC on 3.815

We will see if they let us have it... 73 Paul KB9AVO __ 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:

Re: [Elecraft] FW: Sudden KpA1500 power reduction

“just not publically posted.” Which seems very strange since they post for all the radios, which are far more complex. When I asked about a schematic, I was told “No”. Same with some updates. Just seems strange. Ken K6MR From: Dr. William J. Schmidt Sent: Sunday,

[Elecraft] FW: Sudden KpA1500 power reduction

I've had the KPA1500 at my contest station in the Caribbean go south on me (and another contest group) twice. Both times I was able to get Rene on the phone.. go through the amp... and troubleshoot it over the phone. They have always shared parts of the schematic with me when necessary. It's

Re: [Elecraft] Sudden KpA1500 power reduction

Replacing the LDMOS devices is not that difficult. Take a look at W6PQL’s site, he has a video on how to do it. http://www.w6pql.com/video/ldmos2copper.wmv There also seems to be a dearth of information on the upgrades. I was also told that some upgrades are “factory only”. I don’t think

Re: [Elecraft] Sudden KpA1500 power reduction

It wouldn’t be above your skill level if they would release the schematics. Solid state amps are not any more complicated than tube amps, and I think easier (and safer!) than tubes. My early KPA1500 (#76) has been great, but not having the schematics really bugs me. I know everyone at Space

Re: [Elecraft] Sudden KpA1500 power reduction

I will say the Rene at Elecraft was excellent when I sent my amp RF deck back for updates over a year ago. There were several updates that were performed while it was visiting the left coast. Elecraft support and repair is excellent. The LDMOS devices in my KPa1500 are soldered to the copper

Re: [Elecraft] Sudden KpA1500 power reduction

Ok thanks everyone, I will lug the amp back home and contact Elecraft. Ive had it for about 2 years, everything breaks now and again. I've got my AL1200 here, I could use it at least when I'm here locally. I can't count how many times I repaired that amp. But the KPA is above my skill level.

Re: [Elecraft] Sudden KPA1500 power reduction

Just curious, does the big FLEX amp use the same two LDMOS devices? 2nd question, have they shipped any yet? (probably not the right place to ask) 73, Charlie k3ICH -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Roy Sent: Sunday, February 21, 2021 12:47 PM To:

Re: [Elecraft] Sudden KPA1500 power reduction

If I want more than my KPA500 puts out, I'm going back to tubes. Wes  N7WS On 2/21/2021 10:47 AM, Roy wrote: Ditto here -- mine's at the factory. 73,  Roy,  K6XK __ Elecraft mailing list Home:

[Elecraft] Sudden KPA1500 power reduction

Ditto here -- mine's at the factory. 73,  Roy,  K6XK On 2/21/2021 11:32 AM, Frank Scolaro wrote: Happened to me several months ago... one LDMOS out! same symptoms. You need the power with such great band conditions... GL Frank, W2YK

Re: [Elecraft] [KX3] Why more power-efficient at or below 3 W?

Okay, but sometimes the changeover point is 5 watts instead of 3 -- what's going on in those cases? Cheers, Julie On Tue, Jan 26, 2021 at 2:32 PM Wayne Burdick wrote: > There are two windings on the PA output transformer: 1:1 and 1:4. We > select one of these based on power level, battery

Re: [Elecraft] Sudden KpA1500 power reduction

Happened to me several months ago... one LDMOS out! same symptoms. You need the power with such great band conditions... GL Frank, W2YK -Original Message- >From: rocke...@gmail.com >Sent: Feb 21, 2021 12:23 PM >To: 'Dana Roode K6NR' , 'Elecraft Reflector' > >Subject: Re:

Re: [Elecraft] Sudden KpA1500 power reduction

Just my guess is one of the LDMOS devices let out the magic smoke? Just a thought... Dave wo2x -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Dana Roode K6NR Sent: Saturday, February 20, 2021 9:16 PM To: Elecraft Reflector Subject: [Elecraft] Sudden KpA1500