Re: [Elecraft] P3 TX Mon

Chris, The TXMON uses a in-line sampling coupler. The choices are 200 watt and 2000 watt. The 2000 watt coupler displays power in 1 watt increments while the 200 watt displays the power in 0.1 watt units. Whether that is adequate for your needs or not is only for you to say. 73, Don

[Elecraft] P3 TX Mon

Hi, Can anyone please tell me how the TX monitor facility on the P3 picks up RF? As there are two options, 100w and 2KW, is it an inline sampling device on the antenna cable, please? If you have the 2KW version, does it work adequately when running barefoot at 100w? Thanks 73 Chris

Re: [Elecraft] P3/TX Mon Coupler Switching Idea

One of the guys at Elecraft (Mike?) did this with a cheap switch box available off Amazon. I took that box and added some video analog switches and a band decoder to do it automagically and basis power level. Its a simple matter to do. Just get creative. Dr. William J. Schmidt - K9HZ J68HZ

Re: [Elecraft] P3/TX Mon Coupler Switching Idea

tra sensor cable with male RJ45 connectors to attach the switch box to the P3. A suitable 6-foot W2 Sensor Cable available from Elecraft (Order E850638). 73, Ron AC7AC -Original Message- Subject: Re: [Elecraft] P3/TX Mon Coupler Switching Idea > I am thinking of getting a 2nd DCHF C

Re: [Elecraft] P3/TX Mon Coupler Switching Idea

To make sure I have truly beat this horse to death... Go here: *http://www.elecraft.com/manual/P3%20Xmit%20Mon%20FAQ-ver-A-7.pdf * This is a Tx Mon FAQ... Page 6, 3c. "These 2 items will be connected with CAT5/CAT6 cable plugging into RJ45 jacks." "RJ8" in the Tx Mon Installation Manual is a

Re: [Elecraft] P3/TX Mon Coupler Switching Idea

Followup: Looking in the manual, the picture of the TXMON board clearly shows that the modular jack has 8 conductors. I'm almost certain that is an RJ-45 8P8C jack... But from what I can see, they are using AT LEAST conductors 2,4,6, and 8... (the solid wires for both 568A and 568B). You can see

Re: [Elecraft] P3/TX Mon Coupler Switching Idea

FYI, an RJ-8 modular plug will plug right in to an RJ-45 modular jack The retention key on the connector centers it in the RJ-45 jack so that the 4 center conductors are lined up. The key to making this work is to verify: 1) How are the jacks wired on the switch: 568A or 568B. 2) Match up

Re: [Elecraft] P3/TX Mon Coupler Switching Idea

Hi Alan: Tnx for the info, good to see someone else has done it. Question though, does the Coupler cable use RJ45 connectors, reason I ask I see on the Elecraft site it says RJ8, and I am not finding too much info on the Internet ref RJ8 Connectors. Perhaps I am reading too much into it. 73

Re: [Elecraft] P3/TX Mon Coupler Switching Idea

> I am thinking of getting a 2nd DCHF Coupler for my P3 TX Monitor > Setup. This way I could Monitor 2 Outputs from the same P3. ... > Does anyone know of a switch that could handle this job. Here's the one I use. It allows switching up to four 8P8C (RJ-45) connectors. $10 from Amazon:

[Elecraft] P3/TX Mon Coupler Switching Idea

I am thinking of getting a 2nd DCHF Coupler for my P3 TX Monitor Setup. This way I could Monitor 2 Outputs from the same P3. Currently I have a coupler right after my main linear via Ant 1 on the K3, but want to add a second coupler to the output of the KPA500 via Ant 2 on the K3. I then could

Re: [Elecraft] P3 TX MON question

Hi Barry, The P3TXMON can configured to trigger by sensing the forward RF power at the coupler. For K3 users, the P3TXMON uses internal communication with the K3(S) . Kind regards, Paul -- View this message in context:

[Elecraft] P3 TX MON question

Is the P3 TX MON usable with other radios besides the K3/K3s? If so, how does the monitor get triggered - does it automatically sense RF and switch to TX MON? Are there any P3 menu settings that need to be made to allow this to work? Thanks & 73, Barry N1EU

Re: [Elecraft] P3 TX MON envelope display

Is there a link to some photos where I can see what this looks like? I did not know about the SWR/PWR indication. As for the envelope display, I would expect it to be good enough to indicate trouble or not. Years back, I ran a Heath SB-610 which saved my finals one time. The rig went into

Re: [Elecraft] P3 TX MON envelope display

Missed that. Guess it pays to RTFM :-) Thanks … Grant NQ5T K3 #2091, KX3 #8342 > > > The sweep width is adjusted in the "ModScale" menu entry. (Admittedly not a > very intuitive name. :=) > __ Elecraft mailing list Home:

Re: [Elecraft] P3 TX MON envelope display

Sure. Try: https://www.youtube.com/watch?v=cx3ZeI3FlHk Tom, W2YF On Wed, Feb 3, 2016 at 5:01 PM, Barry N1EU wrote: > Do you have a link to a youtube video showing a phone waveform? The only > video I come up with is https://www.youtube.com/watch?v=CHugxEpj6bg with >

Re: [Elecraft] P3 TX MON envelope display

The modulation monitor is like an oscilloscope in that it triggers on the rising edge of the modulation. So the display is not quite continuous - after every sweep it waits for the next positive transition before starting the next sweep. This is especially useful in CW mode so that the

Re: [Elecraft] P3 TX MON envelope display

Out on youtube if you search for "P3 TXMON" you'll find a couple of short (1 min video) of an operator showing a SSB and CW envelope on a P3 with the TXMON option installed. Tom, W2YF >>> >>> On 2/3/2016 8:26 AM, Barry N1EU wrote: >>> Can someone with the P3 TX MON please describe the

Re: [Elecraft] P3 TX MON envelope display

Do you have a link to a youtube video showing a phone waveform? The only video I come up with is https://www.youtube.com/watch?v=CHugxEpj6bg with NB3R showing only a cw waveform. That's why I posted my question in the first place, because I've never seen a phone waveform. Barry N1EU On Wed,

Re: [Elecraft] P3 TX MON envelope display

Barry, I don't have one, but I have seen them in use. The envelope display looks like what I see on my analog 'scope. It may be digital, but the refresh rate is fast enough you will not be able to differentiate it from an analog display. 73, Don W3FPR On 2/3/2016 8:26 AM, Barry N1EU wrote:

Re: [Elecraft] P3 TX MON envelope display

Thanks Tom! That's just what I was looking for. 73, Barry N1EU On Wed, Feb 3, 2016 at 10:05 PM, Tom Crayner wrote: > Sure. Try: > > https://www.youtube.com/watch?v=cx3ZeI3FlHk > > Tom, W2YF > > > On Wed, Feb 3, 2016 at 5:01 PM, Barry N1EU wrote: > >

Re: [Elecraft] P3 TX MON envelope display

The envelope display is not a “snapshot”, but it isn’t quite real time either. Close, but if you’re used to using a scope for monitoring, you won’t call it “live”. Also, the vertical height of the display is always normalized to the peak RF signal and there are no sweep width/rate

[Elecraft] P3 TX MON envelope display

Can someone with the P3 TX MON please describe the envelope display in ssb/am modes? Does it work like a real time oscilloscope (dynamic) with changing display as you speak or does it take static snapshots of the RF envelope? If static, how often does it update those snapshots? Thanks & 73,

[Elecraft] P3 TX MON with AM?

Is anybody using the P3 TX MON to monitor modulation waveform with AM transmission? I'd appreciate comments on how effective a tool it is. I've only seen one video on youtube of a cw xmsn, and it appeared that the P3 captured a transmit waveform and displayed it (like a storage oscilloscope).

Re: [Elecraft] P3 TX Mon Power Measurement Anomaly

Ken: For what it's worth, I have noticed the same for years on my PowerMaster Meters that there is a bit of power drop when going thru BPF's. In my case I use Dunestar 600's and I can see as much as 10w drop on the output of the BPF when the BPF is on and maybe a watt or so when the BPF is

Re: [Elecraft] P3 TX Mon Power Measurement Anomaly

"> Does anyone have a good explanation for this?" I don't know if this is a "good" explanation, but it is one that is sometimes [often?] true: Many TX Power sensors actually measure voltage, it's a whole lot easier than power. The meter or display is marked in watts which are computed by

Re: [Elecraft] P3 TX Mon Power Measurement Anomaly

Hi Mark, Thank you for a cogent explanation. Clearly, I never thought about the math nor realized how much those little losses add up. 73, Ken, K6LA / VY2TT __ Elecraft mailing list Home:

Re: [Elecraft] P3 TX Mon Power Measurement Anomaly

I certainly understand the concern though. Personally, I have replaced UHF connectors with N connectors where I can, use nothing worse than RG214 or LMR400 for interconnects at my station, and have the interconnects as short as possible. I built many cables with exactly the connectors and lengths

Re: [Elecraft] P3 TX Mon Power Measurement Anomaly

On Mon,12/28/2015 6:40 PM, Mark Goldberg wrote: I have replaced UHF connectors with N connectors where I can, use nothing worse than RG214 or LMR400 for interconnects at my station, and have the interconnects as short as possible. I built many cables with exactly the connectors and lengths

[Elecraft] P3 TX Mon Power Measurement Anomaly

I am having an anomaly with the TX Mon power measurements on my P3s. The power varies significantly depending upon where I put the TX sensor in the RF chain (K3 -> BPF -> Alpha 87A -> Coax Stubs -> Tuner -> Antenna Coax.) I have a 3" coax jumper on the appropriate end of the P3's TX sensor. I get

Re: [Elecraft] P3 TX Mon: FEATURE REQUEST - Monitoring of

Joe: I fully understand the distinction. However, I see the very same waveform on receive in the P3 today. Why can't I see that waveform from my transmitter on the P3? Plus, the required RF sample and IF frequency data is being delivered by the radio to the P3 for tuning right now, isn't it?

Re: [Elecraft] P3 TX Mon: FEATURE REQUEST - Monitoring of

> Plus, the required RF sample and IF frequency data is being > delivered by the radio to the P3 for tuning right now, isn't it? No, the RF sample in transmit is diode demodulated (TX Mon). When I want to see my transmitted waveform, I will just rig up a serial switch to disconnect the serial

Re: [Elecraft] P3 TX Mon: FEATURE REQUEST - Monitoring of RTTY Waveform

On 9/14/2015 2:55 PM, Luis V. Romero wrote: > However, I can't monitor other issues that can rear their ugly heads in RTTY, be it modulated by FSK or AFSK with the existing functionality available: The reason I was looking for a better visual representation of these issues in this tool is

Re: [Elecraft] P3 TX Mon: FEATURE REQUEST - Monitoring of RTTY Waveform

Alan: You wrote: It gets more interesting if there is a problem in the RTTY transmitter that causes the two tones to come out at different amplitudes, which would be easy to see on the screen. In your example, you would see ripple in the flat waveform on the screen, true enough.

Re: [Elecraft] P3 TX Mon: FEATURE REQUEST - Monitoring of

Grant: I have a workaround: My bench O'Scope and a 17 inch piece of hook up wire. Been running that for five years. The above does everything that the TX-MON option does. Everything. Frankly, I was expecting a little more in this product. That's all. Don't worry about me. I will

Re: [Elecraft] P3 TX Mon: FEATURE REQUEST - Monitoring of RTTY

Waveform To: elecraft@mailman.qth.net References: <001601d0ef1e$e360be90$aa223bb0$@ij.net> From: "Lynn W. Taylor, WB6UUT" Message-ID: <55f71d19.1020...@coldrockshotbrooms.com> Date: Mon, 14 Sep 2015 12:16:41 -0700 User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:38.0)

[Elecraft] P3 TX Mon: FEATURE REQUEST - Monitoring of RTTY Waveform

Hello Elecraft folk: Just installed my new P3 TX Monitor board that I ordered at Dayton (!). I have been waiting for this capability for the P3 since 2010, so as to enable me to monitor transmitter waveforms accurately like I did in my Heath SB-401/SB303 station with the SB610 in ancient times

Re: [Elecraft] P3 TX Mon: FEATURE REQUEST - Monitoring of RTTY Waveform

Hi Luis, As you mentioned, monitoring the amplitude of a properly-functioning RTTY transmitter is not very interesting. Since FSK is a constant-amplitude modulation mode, all you see is a constant-amplitude envelope on the screen. It gets more interesting if there is a problem in the RTTY

Re: [Elecraft] P3 TX Mon: FEATURE REQUEST - Monitoring of RTTY Waveform

Lu, Without addressing what any hardware/software changes needed might entail, I'd say that you are _not_ "out of line with [your] expectation" Any request for features intended help the operator adjust his equipment for a cleaner transmitted signal is valid in my opinion. In fact, I tip

Re: [Elecraft] P3 TX Mon: FEATURE REQUEST - Monitoring of RTTYWaveform

Grant, Your not the only one who thinks the same way you do. Gary -Original Message- From: "Grant Youngman" <n...@tx.rr.com> Sent: ‎14/‎09/‎2015 2:15 PM To: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net> Subject: Re: [Elecraft] P3 TX M

Re: [Elecraft] P3 TX Mon: FEATURE REQUEST - Monitoring of RTTY Waveform

But certainly it isn't necessary to wait around for Elecraft to provide. There are all kinds of tried and true and well documented ways to do all of the things. We've apparently come to the point where we expect our radio vendor to do EVERYTHING for us, instead if just doing it for

Re: [Elecraft] P3 TX Mon Usefulness?

Sorry for the somewhat off-topic post but this is the first time I have heard the Eico 720 mentioned in decades. I happen to have one if anyone is interested in buying it. Ted, W2ZK On 8/12/2015 11:06 PM, Wes (N7WS) wrote: Not if you're looking at an Eico 720. It will be difficult to

Re: [Elecraft] P3 TX Mon question

Of Alan Bloom Sent: 13 August 2015 20:07 To: W4CCS; 'Guy Olinger K2AV' Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon question OK, what I did was change it so that, when a K3 is connected, the P3 TX monitor will only go into transmit mode when commanded to do so by the K3, even

Re: [Elecraft] P3 TX Mon question

Sent: Wednesday, August 12, 2015 3:46 PM To: n...@sonic.net Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon question It would appear that the display needs an option to gate the display with the equivent of local TX asserted so it only responds to its own transmitted signal

Re: [Elecraft] P3 TX Mon question

@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon question It would appear that the display needs an option to gate the display with the equivent of local TX asserted so it only responds to its own transmitted signal. An option because others might want to know that their TX signal was coming back

Re: [Elecraft] P3 TX Mon question

and quite sure I'm not the only one with this concern.. W4CCS -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Guy Olinger K2AV Sent: Wednesday, August 12, 2015 3:46 PM To: n...@sonic.net Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon

Re: [Elecraft] P3 TX Mon question

-boun...@mailman.qth.net] On Behalf Of Guy Olinger K2AV Sent: Wednesday, August 12, 2015 3:46 PM To: n...@sonic.net Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon question It would appear that the display needs an option to gate the display with the equivent of local TX asserted

Re: [Elecraft] P3 TX Mon question

-Original Message- From: Joe Subich, W4TV [mailto:li...@subich.com] Sent: Wednesday, August 12, 2015 10:51 AM To: W4CCS; Elecraft Subject: Re: [Elecraft] P3 TX Mon question Almost certainly inter station coupling particularly if the two antennas were close together and/or the (two radio

Re: [Elecraft] P3 TX Mon question

and all reflected.. CCS -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Subich, W4TV Sent: Wednesday, August 12, 2015 9:30 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon question As N1AL indicated, the TX MON goes to maximum

Re: [Elecraft] P3 TX Mon question

To: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon question As N1AL indicated, the TX MON goes to maximum gain at low signal levels. You're probably seeing inter station coupling - hopefully at low levels. Is the SWR very high - all reflected

Re: [Elecraft] P3 TX Mon question

: Wednesday, August 12, 2015 10:51 AM To: W4CCS; Elecraft Subject: Re: [Elecraft] P3 TX Mon question Almost certainly inter station coupling particularly if the two antennas were close together and/or the (two radio) antenna switch lacks sufficient isolation. 73, ... Joe, W4TV On 8/12/2015

Re: [Elecraft] P3 TX Mon Usefulness?

Jim and all, I agree, the *best* way to look at keying is in the frequency domain, but for those who do not have that capability, the time domain keying waveshape can be beneficial. The P3 TX MON option does not show the frequency domain, but it can display the rise time and fall time of

Re: [Elecraft] P3 TX Mon Usefulness?

On 8/12/2015 4:20 PM, Jim Brown wrote: On Wed,8/12/2015 10:00 AM, Lyle Johnson wrote: You *can* hook up your Eico 720 Tx and see its CW rise and fall times and perhaps use that information to dig into the radio and improve it. You've GOT to be kidding -- CW waveshaping is spectacularly

Re: [Elecraft] P3 TX Mon Usefulness?

On Aug 12, 2015, at 3:49 PM, Jim Brown j...@audiosystemsgroup.com wrote: On Wed,8/12/2015 3:39 PM, Merv Schweigert wrote: I think hes referring to improving the Eico 720 keying shape. Sorry, I missed that. :) BUT -- the frequency domain is still the best place to be looking at the

Re: [Elecraft] P3 TX Mon Usefulness?

On Wed,8/12/2015 10:00 AM, Lyle Johnson wrote: You *can* hook up your Eico 720 Tx and see its CW rise and fall times and perhaps use that information to dig into the radio and improve it. You've GOT to be kidding -- CW waveshaping is spectacularly good already. If it ain't broke, don't try

Re: [Elecraft] P3 TX Mon Usefulness?

On 08/12/2015 03:20 PM, Jim Brown wrote: Besides, the time domain (rise/fall times) is the wrong way to look at keying. The only effective way is in the frequency domain, where the P3 with SVGA can resolve to a few Hz when set for narrow scan widths. A spectrum analyzer is the best way to

Re: [Elecraft] P3 TX Mon Usefulness?

On Wed,8/12/2015 3:39 PM, Merv Schweigert wrote: I think hes referring to improving the Eico 720 keying shape. Sorry, I missed that. :) BUT -- the frequency domain is still the best place to be looking at the signal as you make changes. 73, Jim K9YC

Re: [Elecraft] P3 TX Mon Usefulness?

I think hes referring to improving the Eico 720 keying shape. On Wed,8/12/2015 10:00 AM, Lyle Johnson wrote: You *can* hook up your Eico 720 Tx and see its CW rise and fall times and perhaps use that information to dig into the radio and improve it. You've GOT to be kidding -- CW

Re: [Elecraft] P3 TX Mon Usefulness?

Not if you're looking at an Eico 720. It will be difficult to identify keying sidebands amongst the drift and chirp. On 8/12/2015 3:49 PM, Jim Brown wrote: On Wed,8/12/2015 3:39 PM, Merv Schweigert wrote: I think hes referring to improving the Eico 720 keying shape. Sorry, I missed that. :)

Re: [Elecraft] P3 TX Mon Usefulness?

You *can* hook up your Eico 720 Tx and see its CW rise and fall times and perhaps use that information to dig into the radio and improve it. In SSB mode you can see the effect of the K3 Tx EQ and speech processor as it relates to peak-to-average power. And as you say it provides PWR and SWR

[Elecraft] P3 TX Mon

Maybe, to sensitive..?? Is there a way to modify the sensor..?? CCS -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Alan Sent: Wednesday, August 12, 2015 11:47 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon question

[Elecraft] P3 TX Mon Usefulness?

Now that I have the P3 TX Monitor I am wondering if this is anything more than a mere light-show for entertainment. I am mostly CW and I find that the actual TX display of the CW to be a bit silly looking and contrived. In fact, it looks like something fake to me and I say that not as a

Re: [Elecraft] P3 TX Mon Usefulness?

and enjoy; life is good. 73 Doug EI2CN -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Phil Hystad Sent: 12 August 2015 16:39 To: Elecraft Reflector Subject: [Elecraft] P3 TX Mon Usefulness? Now that I have the P3 TX Monitor I am wondering

[Elecraft] P3 TX Mon question

I have two K3's and two P3's but only one has the TX Mon option.. When I transmit with the K3 that does NOT have the TX Mon installed, the P3 that does have it reacts showing VSWR and one sweep of the transmit envelope.. This seems very strange.. The only thing in common between the two is the

Re: [Elecraft] P3 TX Mon question

As N1AL indicated, the TX MON goes to maximum gain at low signal levels. You're probably seeing inter station coupling - hopefully at low levels. Is the SWR very high - all reflected? 73, ... Joe, W4TV On 8/12/2015 9:20 AM, W4CCS wrote: I have two K3's and two P3's but only one has the

Re: [Elecraft] P3 TX Mon question

Subich, W4TV Sent: Wednesday, August 12, 2015 9:30 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon question As N1AL indicated, the TX MON goes to maximum gain at low signal levels. You're probably seeing inter station coupling - hopefully at low levels. Is the SWR very high - all

Re: [Elecraft] P3 TX Mon question

: [Elecraft] P3 TX Mon question As N1AL indicated, the TX MON goes to maximum gain at low signal levels. You're probably seeing inter station coupling - hopefully at low levels. Is the SWR very high - all reflected? 73, ... Joe, W4TV On 8/12/2015 9:20 AM, W4CCS wrote: I have two K3's and two

Re: [Elecraft] P3 TX Mon Usefulness?

. No need to purchase a W2 wattmeter now. Smile and enjoy; life is good. 73 Doug EI2CN -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Phil Hystad Sent: 12 August 2015 16:39 To: Elecraft Reflector Subject: [Elecraft] P3 TX Mon

Re: [Elecraft] P3 TX Mon question

or on the LP-100.. Only the TX Mon. W4CCS -Original Message- From: Joe Subich, W4TV [mailto:li...@subich.com] Sent: Wednesday, August 12, 2015 10:51 AM To: W4CCS; Elecraft Subject: Re: [Elecraft] P3 TX Mon question Almost certainly inter station coupling particularly if the two antennas

Re: [Elecraft] P3 TX Mon question

-Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Guy Olinger K2AV Sent: Wednesday, August 12, 2015 3:46 PM To: n...@sonic.net Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX Mon question It would appear that the display needs an option

[Elecraft] P3 TX mon

Received the P3 TXMON option yesterday.. Took about 10 minutes to install and works flawless.. THANKS Elecraft..!! The only drawback I see is the lack of the option to set full scale at 1500 watts and not 2000 watts.. Just a personal preference But all is good.. Clyde Scott - W4CCS

Re: [Elecraft] P3 TX mon

Interesting. I wondered how this worked. My P3TXMON was shipped this week so ill get to play with it soon, but one would think the scale would be adjustable so that whatever power is seen, you could make that the full scale. This is just a scaling issue. Otherwise running the KPA500 with the

Re: [Elecraft] P3 TX mon

the K3 by itself, the bar display is very low.. However, the digital readout indicates the correct power. CCS From: Dr. William J. Schmidt, II [mailto:b...@wjschmidt.com] Sent: Friday, July 31, 2015 10:50 AM To: W4CCS Cc: Elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 TX mon