Re: [Elecraft] K3 with the AS-419 bandpass filter system

Noel, the 419 has two "input modes" for selecting bands using the connector on the rear: PBM = Per Band Mode, where 12V is put on an appropriate pin for the band you wish to select, that is, one of 6 pins. BDM= Band Data Mode, where Band0 to Band3 data is applied to the connector, and the 419

Re: [Elecraft] K3 Power Supply Question

On Thu,3/9/2017 9:29 PM, George Thornton wrote: From what I am learning the K3 needs a strong, stable power supply to be reliable. ANY ham rig needs that. :) At 100W, the K3 draws about 20A keydown. Do Ohm's Law on the wiring between the power supply and the K3. The simple answer is

Re: [Elecraft] K3 Power Supply Question

Minimize all cable lengths. No more than necessary. Verify (actually look at) that SLL APP connectors are FULLY SEATED! Meaning inspect the open end for seeing only one price of metal. Check the Anderson web site for a cut away picture of the cross-section of a properly assembled APP. I use

Re: [Elecraft] K3 Power Supply Question

I connect my voltage boost, like yours a N8XJK, between the power supply mess and the K3. (I run it in RF Enabled mode.) That results in my K3 getting the voltage it needs, and the voltage loss in all the other connections getting made up. 73 Bill AE6JV On 3/9/17 at 9:00 PM, w6...@me.com

Re: [Elecraft] K3 Power Supply Question

I am using an Astron 35 amp ps. I did not use a dmm, just the meter on the k3. I only got a .2 drop when I connected direct with a five foot thick gauge wire. But using the same pwrgate setup as yours it dropped a full volt or more on transmit. A friend had problems running in a mobile

Re: [Elecraft] K3 Power Supply Question

I put my DMM leads on the front terminals of the 4545 and with key down, no change at all: 13.9V, so it appears that MFJ gets a pass on this one. To do my testing I had run the 4545 directly to the K3 and not through the Rig Runner. However, to do that I had simply hooked the cable from the

Re: [Elecraft] K3 Stops Transmitting

Correction to Item 2. I meant to write "A floating *PIN 7* (TX INH) can cause TX to be intermittently inhibited..." 73, Bob, N6TV On Thu, Mar 9, 2017 at 6:50 PM, Bob Wilson, N6TV wrote: > No TX power is a common problem, especially on DXpeditions. Other than > power supply

Re: [Elecraft] K3 Stops Transmitting

No TX power is a common problem, especially on DXpeditions. Other than power supply issues, it is usually one of three things: 1. Intending to use the BAND button, one holds down the right MODE button by mistake, putting the K3 into TX TEST mode. The "TX" icon flashes. But, since you

Re: [Elecraft] K3 Power Supply Question

Don, Excellent advice! While I have a little bit of voltage drop, will run a parallel set of leads directly to my battery charged by my PowerGate PG40 s directly rather than through the rigrunner. Connection resistance was removed years ago but your suggestion cuts out two connectors. I

Re: [Elecraft] K3 Power Supply Question

I run an Astron 50 amp linear supply and a 4' cord between it and the K2 I see .6 of a volt drop on keydown at 100 watts From: James Bennett To: Elecraft Reflector Reflector Sent: Thursday, March 9, 2017 8:09 PM Subject: [Elecraft] K3 Power

Re: [Elecraft] K3 Power Supply Question

Jim, Get your DMM out and make the same measurement at the power supply terminals. If you see a substantial voltage sag during transmit there, you can blame the power supply. But if the voltage stays close to constant, the problem is voltage drop in the power cabling. The RigRunner will

[Elecraft] K3 Power Supply Question

Hi All - I’ve been powering my station for anywhere from 7 - 9 years (can’t recall exactly how long!) with an MFJ4245MV switching power supply. I use it in conjunction with a 72 watt GE solar panel, 110 Ah AGM battery, ProStar charge controller, N8XJK Boost Regulator, and a KI0BK Low Loss

Re: [Elecraft] KX2 and Sherwood Eng. RX Performance Ranking?

Hi Chris, Thanks for your comments. Of course the design goal for the KX2 was to pack as many bands, modes, and features into the smallest possible size, not to break records on RX measurements. Nonetheless, I'd expect the KX2 to come in somewhere in the top 20 or so on Rob's list. We'll

Re: [Elecraft] KX2 and Sherwood Eng. RX Performance Ranking?

Thanks Gus this will be interesting. For me the KX2 could perform worse that it probably will, and I would still love it for its portability and down right cool factor. That thing and a couple of small bundles of wire has you qrv anywhere in the world~ what a great little transceiver! Chris

Re: [Elecraft] KX2 and Sherwood Eng. RX Performance Ranking?

I just spoke to Rob on the phone. His lab in Denver is just a few miles from where I live and he will be testing my KX2 as soon as I can get it to him. We had previously tested my Ten-Tec Omni V back when it first hit the market, and it was quite an eye opener for me to see his well equipped

[Elecraft] BPF Bypass

Hi, I have a KX3 and so far I’m very pleased. Very nice design and good build. I would like to use this radio for ALE, which requires cross-band scanning. This mode is used only for initial detection. If I use the KX3 as is, when changing bands I can clearly hear relays switching, which I

Re: [Elecraft] KX3 Behavior with Brick Amplifier

Or , you can turn the amp on with a keying line and sweep the input with a analyzer to see where it is matched.  CB amps are notorious for having very narrow input match networks, like Jim said, but the transformers are most likely broad band.  Worth tinkering with if you want to see whats

Re: [Elecraft] k3 with AS-419

You should check to see if you need a KRC-2. I know you need that with the ICE 419 filter. Rich On 3/9/2017 16:39 PM, NOEL POULIN wrote: Hello Jim, Yes I have both manuals (k3 and 419...) I suppose I will need a Y cable from the K3 to the 419.. Noel

[Elecraft] k3 with AS-419

Hello Jim, Yes I have both manuals (k3 and 419...) I suppose I will need a Y cable from the K3 to the 419.. Noel __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm

Re: [Elecraft] KX3 Behavior with Brick Amplifier

On Thu,3/9/2017 1:11 PM, Richard Lawn wrote: Or am I missing something? I'm guessing that that amp is a POS. You can filter harmonics, but you can't filter IMD. I'd throw it in the trash. The SWR issue is likely because the input circuit is tuned for 11M and doesn't pass whatever frequency

Re: [Elecraft] K3 with the AS-419 bandpass filter system

Noel, The data sheet says that it does, and I would believe it. The K3 puts out band data in several forms on the AUX connector. Have you looked in the K3 manual? It's detailed there, and you can download the manual for the AS-419. Have you done that? You'll need a suitably wired cable

[Elecraft] KX3 Behavior with Brick Amplifier

I took an old Palomar solid state "broadband" amp and added a band pass filter to the output to clean things up. I then tried it with my KX3 and to my surprise the SWR was showing high at the KX3. The filter alone attached to a dummy load shows a near perfect 52 ohms so the problem isn't on that

[Elecraft] Elecraft Frequency Memory Editor Software

Elecraft Frequency Memory Editor Software, has this been updated for the Mac OS? My PC is dying very quickly! Howard AE3T __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

[Elecraft] K3 with the AS-419 bandpass filter system

I would like to know is anybody in this group using the AS-419 bandpassfilter system with the K3? I was told it was possible to hook the system to the K3 for automatic band change, without any band decoder?? Comments will welcome. Thanks NOel

Re: [Elecraft] KX2 and Sherwood Eng. RX Performance Ranking?

I I was going to say the same thing my unit is #38 and would be glad to lend it for testing Paul. KB9AVO On Mar 9, 2017 12:50 PM, "Matt Murphy" wrote: > I'd be willing to send Rob my KX2 for testing. > > 73, > Matt NQ6N > > On Thu, Mar 9, 2017 at 2:42 AM, Jim Brown

Re: [Elecraft] KX2 and Sherwood Eng. RX Performance Ranking?

I'd be willing to send Rob my KX2 for testing. 73, Matt NQ6N On Thu, Mar 9, 2017 at 2:42 AM, Jim Brown wrote: > On Wed,3/8/2017 8:41 PM, w7aqk wrote: > >> you are right to be concerned about how clean a transmitter is, but there >> are regulatory requirements about

Re: [Elecraft] K3 Stops Transmitting

I had something somewhat similar happen and the best I could tell it was related to power supply issues. Now I use thicker wire direct from the power supply to the K3 and it so far seems to be working better. An advertised way to fix it is to re-load the firmware and recalibrate the transmit

Re: [Elecraft] Augment KX3 or buy K3?

Four months ago or so I sold my KX3/KXPA100 combination to purchase a used K3/100. There were a couple of factors. First of all, I had used my KX3 kit for NPOTA extensively, and I was done with that operation. Second, I had purchased an IC-706Mk2G and installed it mobile, permanently. Third, I

Re: [Elecraft] K3 Stops Transmitting

I did try the "drop" test- hold up the front of the radio a little bit, and then drop it so that it contacts the table. Kinda shake things up a bit. No luck. When I also brought it home, I put it in the case, drove it 72 miles back to my house, brought it in, and set it up 2 days later. So it

Re: [Elecraft] K3 Stops Transmitting

First thing I did- and the first thing I do whenever I have any funny happen- is to cycle power. I did so several times. It still wouldn't transmit. UE On 3/9/2017 9:00 AM, Ed Muns wrote: When it was not transmitting and you were troubleshooting, did you cycle power? 73, Ed W0YK On Mar 9,

Re: [Elecraft] K3S's built-in RTTY

Don, I think the use of the K3/K3S on digital modes is easy. If you are using soundcard digital modes, put the K3/K3S into DATA A mode, and adjust the soundcard output level to about 75%. Change the MIC SEL to LINE. You connect the soundcard line out (Spkr) to the K3 LINE IN and the

Re: [Elecraft] K3S's built-in RTTY

Thanx for all the good points raised for this RTTY-wannabee, morphing from CW. I always get Fred's books even before buying the Elecraft hardware, but even with his excellent explanations of the terse official manuals, digital mode use is still a lot of digestion. e.g., it was only yesterday

Re: [Elecraft] K3 Stops Transmitting

I had a similar event last October in the New York QSO Party with my K3, s/n67xx. After the first QSO (from a beautiful overlook in Fort Tryon Park in Manhattan) it simply stopped putting out RF. It went into transmit, just no RF. I tried power cycling, jiggling external connectors, etc. After

Re: [Elecraft] K3 Stops Transmitting

When it was not transmitting and you were troubleshooting, did you cycle power? 73, Ed W0YK On Mar 9, 2017 5:54 AM, Dennis wrote: > > In the middle of ARRL DX CW, my K3 stopped transmitting.  It did not > shut off, it > would go into transmit and there were small

[Elecraft] K3 Stops Transmitting

Hi Dennis, I am certain you checked for this issue but my first thought would be that you had a power supply issue or power cable issue. 73, John WB4YAL __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft

[Elecraft] K3 Stops Transmitting

In the middle of ARRL DX CW, my K3 stopped transmitting. It did not shut off, it would go into transmit and there were small flickers in ALC when the meter was in that position, but no power out. Pushing the TUNE button resulted in the display saying "0 watts". I played with it for several

Re: [Elecraft] Birdies

I might fiddle some more with cable placement. I also plan to clear all of the signal removal data and just rework it. I had the birdies cleaned up with the removal tool in most areas of the bands I operate. But since relocating the middle of last year into an “antenna free” zone, I’ve been

Re: [Elecraft] KX2 and Sherwood Eng. RX Performance Ranking?

On Wed,3/8/2017 8:41 PM, w7aqk wrote: you are right to be concerned about how clean a transmitter is, but there are regulatory requirements about that. If you don't meet those standards, you supposedly can't sell it!!! Sadly, it goes FAR beyond that. See my comparison of ARRL Lab data for

Re: [Elecraft] Birdies

The firmware birdie removal took care of every bothersome birdie (and I am a stickler about weak signal performance) except for one that was still an S2 or so ... and that was in a portion of the band that I don't care much about. I did play around quite a bit with cable placement (see