[Elecraft] P3 - What am I observing?

My K3 and P3 are connected in the usual way (RS-232, etc.) My K3 has a 500Hz roofing filter, and I typically set my DSP filter to 500 Hz when operating CW. Using tonight's display, I have an approx. -150dB average noise floor on 10 meters. I'm not exactly sure how to identify the "noise floor" u

Re: [Elecraft] [K3] Serial interface noise issues

Thank you Don, that was clear and concise. I'm not an expert on radios or RF like some on this list. I just try to go with what works. I was a firefighter in my previous life. We adapt and overcome. I make things work, then I make them 'pretty'. (Pretty in this case means safer, more reliab

[Elecraft] Orion I for K3

Hi, My Orion I for your Elecraft K3. Please reply offline. Bob w7wo b...@kalkwarf.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@

Re: [Elecraft] [K3] Serial interface noise issues

I will only comment on the part reproduced below - audio return is NOT audio ground. In the case of the Motorola amp cited, I suspect the audio amp output is a bridged amplifier, and for those, neither speaker lead should be grounded (it shorts half of the audio amplifier. BUT, Jim Brown was

Re: [Elecraft] P3 - Know bug?

Hi David, Sorry I didn't reply before. I'm catching up on my email after eye surgery. I confirmed the problem. The cursors are the correct places on the screen but the displayed center frequency is wrong. I'll add it to the bug list, thanks. Alan On Mon, 2011-10-31 at 17:50 +, David Pra

Re: [Elecraft] USB interface

> SignaLink (Tigertronics) is quite popular and works well. Instead of > replacing the internal jumper set (wired for my TS-940) and paying > an extra $25, I made up my own interface cable (already had the > connectors) to the K3 so I can switch back and forth if needed by > leaving the interface

Re: [Elecraft] [K3] Serial interface noise issues

On 11/1/2011 6:58 PM, Rick Bates wrote: > Not always. It may be considered poor design but if the in/output goes > directly to a differential amp with little or no 'padding' to chassis > (creating the comparison to 'different'), it may have a floating ground and > actually cause problems if connec

Re: [Elecraft] K3 Strange Problem

Good catch Don. And it should be noted that not all PL-259 mate properly if the outer shaft of the SO-239 (or barrel connector) is too short. It should be seated, tight and with no movement in any direction. Though I don't use pliers; I just crank on it and check them periodically. Rick WA6NHC

Re: [Elecraft] USB interface

Dave, SignaLink (Tigertronics) is quite popular and works well. Instead of replacing the internal jumper set (wired for my TS-940) and paying an extra $25, I made up my own interface cable (already had the connectors) to the K3 so I can switch back and forth if needed by leaving the interface att

Re: [Elecraft] K3 Strange Problem

Joe, You results seem to be erratic. Loose PL-259s can cause symptoms like that. Finger tight for PL-259s is not good enough, the connectors must be seated in the notches, and after finger-tightening, must be torqued a bit more with pliers to obtain a secure connection. The connection to the

Re: [Elecraft] K3 Strange Problem

Joe, In addition to the antenna check out, try replacing the patch cables from the K3 to the switch as well, you may have an intermittent there or poor bonding to the shield (a common problem, making effective coax connector bonds is a learned art). I think you said you were using a balun to the l

[Elecraft] USB interface

Well the old laptop computer with the serial interface is probably on its last legs.. gee W98 held out pretty good! Writelog never seemed to mind and generated CW as well as rig control on a single COM port. So I think I am switching to a new laptop and adding to what the rig can do. Still I need a

Re: [Elecraft] [K3] Serial interface noise issues

Not always. It may be considered poor design but if the in/output goes directly to a differential amp with little or no 'padding' to chassis (creating the comparison to 'different'), it may have a floating ground and actually cause problems if connected to ground. In the case of Motorola radios

[Elecraft] K3 Strange Problem

Guy, Don I don't get the emails just the digest show your emails to me. I agree the antenna should be the first place and in fact I did look at it hanging in the air but I have not lowered it to give it a closer inspection. Unfortunately my antenna analyzer is one MFJ's first and only gives

Re: [Elecraft] [K3] Serial interface noise issues

On 11/1/2011 4:57 PM, Rick Bates wrote: > Note that on some computers, chassis ground is NOT audio ground and I'd > suspect the same is true of some radios (true for at least one of my > Batwings). It SHOULD be. If it is not, the mfr goofed. THAT'S what a Pin One Problem is! Further, unless the

Re: [Elecraft] [K3] Serial interface noise issues

Wall wart power supplies are notorious for creating RF noise (and audible hum). My stock HP laptop power supply generates a vast spectrum of noise but the triple source (wall, 12v, aircraft) replacement is mute on all frequencies, same brand. So part of the test should be removing ALL power sourc

Re: [Elecraft] K3 Strange problem

I agree fully with Guy. Most problems of that nature are an antenna problem. If you have an antenna analyzer, connect it to the PL-259 that you normally connect to the K3 - do not add or subtract any coax. Then read the impedance (R and jX, not just SWR). If it is extremely high or extremely

Re: [Elecraft] [K3] Serial interface noise issues

On 11/1/2011 3:33 PM, tomb18 wrote: > Do you think that this issuee could still occur with the computer off but the > cable still attached? I have some issues with noise but have attributed > them so far to the power lines. I mean if the cable is picking up > interference from somewhere else, the

Re: [Elecraft] K3 Strange problem

Probably not the best thing to assume first that the trouble is in the rig. Odds are really against you. Antenna is outside, subject to all kinds of strain that can part conductors, even inside insulation so you can't see it, getting water in coax, pulled around by the wind, etc, etc, ad nauseum.

Re: [Elecraft] KPA #455 not very well

I ran into issues too. I unassembled the kit partially, and could not see any misplaced cables. When I put it back together, it worked fine. And, I have plenty of electronics experience. Easy to do, shift the cable. Good thing it doesn't blow it up! -- View this message in context: http://e

Re: [Elecraft] [K3] Serial interface noise issues

Do you think that this issuee could still occur with the computer off but the cable still attached? I have some issues with noise but have attributed them so far to the power lines. I mean if the cable is picking up interference from somewhere else, then perhaps this could be an issue? I'll have

[Elecraft] Schurr key for sale

I have a Schurr Profi ( dual paddle) key new in the box has never been used that I would like to sale for $300.00. If anyone is interested please give me a call at 801-796-8211 TNX Dave AD7IJ __ Elecraft mailing list Home: http://mailman

[Elecraft] k3 strange problem

Thanks, Fred. But no I was on the right antenna. I tried all kinds of things. And a couple of times I got back to where it was tuning normally, but as soon as I turned on the sub-receiver and tried to transmit, I would get the HIGH SWR message and after that if I did a tune it would not go below

Re: [Elecraft] K3 Strange problem

On 11/1/2011 1:51 PM, Joe Ford wrote: > A few days ago, I heard a DX station working a pileup on 30m. I > pushed A>B, Split, then Sub. When I keyed the K3 to call the DX I got > the HIGH SWR message. Now whenever I tap ATU TUNE, the SWR maxes out, > the relays go crazy and it tunes to about 2:1 a

[Elecraft] K3 Strange problem

Mine is a new (but not my first) K3. It has the KPA3, KAT3, KRX3, KXV3A, and P3. I have 2 antennas connected to the KAT3. Ant1 is a beam. Ant2 is an 88' long dipole fed with ladder line to an Elecraft 4:1 balun then coax to then K3. The KAT3 normally tunes it close to 1:1 on 80/40/30/20m, the on

Re: [Elecraft] P3 - Know bug?

K3 4.39 CONFIG: VFO OFS = yes P3 1.09 span +/- 4 kHz (1) VFO A = 3550.0, RIT off: --> green P3 cursor centered, P3 reads 3550.00 (2) turn RIT on and set it to +1 kHz: --> K3 VFO A now reads 3551.0 --> red P3 cursor is 1 kHz left from display center --> P3 reads 3552.00 (3)

Re: [Elecraft] CM500 headphone (was: CQ WW SSB)

"I used?the Yamaha CM500 from my colleage VO1AU which was very good.? I cannot get a CM500 in VR2, could any of you advise where I can get a CM500 in USA?" ? -- There are USA eBay sellers who now sell the CM-500 international. Purchased a 2nd set this way rece

Re: [Elecraft] P3 - Know bug?

As Don says if CONFIG:VFO OFS is set to OFF it does of course stop the RIT/XIT knob changing the K3 frequency when RIT/XIT is off but it has no effect on the "feature" originally reported: ie the P3 frequency readout changes at twice the rate of the K3 when RIT is on. XIT is slightly different

[Elecraft] K3 - Led's

Has anyone had a problem where both the red(transmit) and yellow(RIT) LED's stopped working? In the middle of the contest both Led's stopped illuminating. Everything seems to be working fine. Before I dig into the rig and schematics when I get home in a couple of days figured I would check first

Re: [Elecraft] CM500 headphone (was: CQ WW SSB)

CM-500 much more comfortable than Heil Pro set wearing it an entire contest weekend. And no matter how I try to set up the transmit equalizer for both headsets I get reports of more penetrating audio from the CM-500. We just ran a pair of K3's at WP2Z this past weekend. 73, N2TK/NP2, Tony -

[Elecraft] FS: W2

I have a like new W2 with both 200 and 2000 watt couplers/cables. Includes the serial cable for downloads. $230.00 shipped and insured Phil Philip LaMarche LaMarche Enterprises, Inc p...@lamarcheenterprises.com

Re: [Elecraft] CM500 headphone (was: CQ WW SSB)

They are available here in the USA at: http://www.samash.com/p/Yamaha_CM500%20Headphones%20with%20Microphone_-49969 751 Jim W7CT -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Adrian Sent: Tuesday, November 01, 2011 1:23

Re: [Elecraft] CM500 headphone (was: CQ WW SSB)

"I used?the Yamaha CM500 from my colleage VO1AU which was very good.? I cannot get a CM500 in VR2, could any of you advise where I can get a CM500 in USA?" ? -- There are USA eBay sellers who now sell the CM-500 international. Purchased a 2nd set this way recen

Re: [Elecraft] [K3] Serial interface noise issues

On 11/1/2011 9:54 AM, Jim Brown wrote: > On 11/1/2011 4:51 AM, Thomas Horsten wrote: >> I guess both of these problems could be down to bad/no screening of the >> little chip in the dongle, I tried enclosing it and the cable in kitchen >> foil but with no discernible difference. Any suggestions, >

Re: [Elecraft] [K3] Serial interface noise issues

On 11/1/2011 4:51 AM, Thomas Horsten wrote: > I guess both of these problems could be down to bad/no screening of the > little chip in the dongle, I tried enclosing it and the cable in kitchen > foil but with no discernible difference. Any suggestions, The more likely cause is a Pin One Problem on

Re: [Elecraft] XG3 question

Edward and other who responded, I appreciate your response. As it turns out the problem with the FM receiver(s) turned out to be something simple. I was looking forward to some serious old fashioned troubleshooting. The receivers are from a language translation system. Other than one set of d

Re: [Elecraft] [K3] Serial interface noise issues

I noticed some noise from the KUSB as well but after playing around a bit discovered that it was being picked up by my nearby temporary antenna setup rather than being conducted or radiated into the K3 directly. Disconnecting the antenna coax killed the noise completely. YMMV Jim ab3cv __

Re: [Elecraft] [K3] Serial interface noise issues

I use a KUSB from Elecraft and have an increase in noise of 2-3 s-units when used on my lap top. Keith -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Serial-interface-noise-issues-tp6951387p6951837.html Sent from the Elecraft mailing list archive at Nabble.com.

Re: [Elecraft] [K3] KAT3 algorithms?

Randy, I found the ATU memory step spacing in the Firmware Release Notes. In release notes for MCU 3.03 / DSP 2.10, 3-17-2009: * MULTIPLE KAT3 ATU DATA SEGMENTS PER BAND/PER-ANT.: 10 kHz per segment on 160 m; 20 kHz on 80-12 m; 50 kHz on 10 m; 200 kHz on 6 m. John, KN5L _

Re: [Elecraft] [K3] KAT3 algorithms?

> 1.2:1. So, why was the original ATU TUNE at 14.018 not good enough at > 14.022.5? My guess: the ATU memory transition is at 20Khz steps. I have wondered where they were. You may be able to repeat the process if you clear out the band's ATU memories, see the "KAT3" configuration option, the las

[Elecraft] [K3] KAT3 algorithms?

I am puzzled by how my KAT3 is working. (FW 4.39/2.73) Just now, I was chasing some DX on 20m. I was listening on 14.020 with split up to 14.022.5. I called once and noticed the SWR was up around 3:1. That's ok, but I wanted to get it down a bit, so I killed split, moved VFO A down to a cl

[Elecraft] [K3] Serial interface noise issues

Hi, I use a cheap USB to serial dongle to connect my Eee netbook (running Linux) to the K3, but I have a couple of issues with it, and I would like to solicit suggestions to sort it out. On 10/12/15m and if the bands are relatively quiet, I get bursts of S1-S2 static when the PC is talking to the

[Elecraft] CM500 headphone (was: CQ WW SSB)

Thanks to all replies in relation to the purchase of CM500.  73, Johnny VR2XMC 從︰ Andy Wood 收件人︰ elecraft@mailman.qth.net 傳送日期︰ 2011年11月1日 (週二) 3:17 PM 主題︰ Re: [Elecraft] CQ WW SSB "I used the Yamaha CM500 from my colleage VO1AU which was very good.  I cannot

Re: [Elecraft] CQ WW SSB

"I used the Yamaha CM500 from my colleage VO1AU which was very good.  I cannot get a CM500 in VR2, could any of you advise where I can get a CM500 in USA?"   -- Hi Johnny, I purchased some from here some time back. No problems with credit card or shipping to Au