Re: [Elecraft] [P3] P3TXMon Wattage/SWR

[Don Wilhelm]

I suggest that you label the ends with extra labels close to the SO-239 
jacks with "in" and "out" or something else meaningful to you before 
opening the box.


A labeler does a nice job, but a Sharpie marker will be effective as well.

73,
Don W3FPR

On 8/27/2017 6:56 PM, Nr4c wrote:

I suggested to Elecraft as soon as I got mine, that the label should be on the 
other part of the case.

Sent from my iPhone
...nr4c. bill

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Re: [Elecraft] [P3] P3TXMon Wattage/SWR

[Nr4c]

I suggested to Elecraft as soon as I got mine, that the label should be on the 
other part of the case. 

Sent from my iPhone
...nr4c. bill


> On Aug 27, 2017, at 12:21 PM, Bob via Elecraft  
> wrote:
> 
> And if your a typical ham curiosity will have you opening the minibox to see 
> what makes it tick.   Having done that the U box lid can be put on wrong so 
> the labeling is incorrect.
> 
> Learned that on my own
> 
> 73,
> Bob
> K2TK  ex KN2TKR (1956) & K2TKR
> 
> 
>> On 8/27/2017 5:36 AM, Harlan Sherriff via Elecraft wrote:
>> The antenna connects to the "load" connector.
>> Harlan
>> K4HES
>> Sent from my iPhone
>>> On Aug 27, 2017, at 3:06 AM, MaverickNH  wrote:
>>> 
>>> Possible - which side should LOAD be connected...K3S or Antenna?
>>> Bret/N4SRN
> 
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Re: [Elecraft] [P3] P3TXMon Wattage/SWR

[Alan]

The currently-shipping sensors are the same for the W2 and P3 TXMON.  If 
you have an older W2 sensor (I'm not sure of the S/N cutoff date), it 
will work, but the bandwidth may be limited on the waveform display.  It 
can be modified by changing several capacitors.  I don't see 
modification instructions on the web site but I think Elecraft Support 
should have the details.


One sensor cannot drive both devices. You would need a 8P8C (RJ-45) 
mechanical switch for that.  You could also use such a switch to select 
one of several sensors for the P3.  This is the one I bought, but there 
are others:


https://smile.amazon.com/gp/product/B00AUB3SSA/ref=oh_aui_detailpage_o04_s00?ie=UTF8=1

Alan N1AL


On 08/27/2017 09:16 AM, Glenn Anderson wrote:

Is it the same sensor that is used with the W2 power meter? If so, can one 
sensor drive both devices?
Glenn WB5TUF
 Original message From: MaverickNH <cbjesse...@comcast.net> 
Date: 8/27/17  10:55  (GMT-06:00) To: elecraft@mailman.qth.net Subject: Re: 
[Elecraft] [P3] P3TXMon Wattage/SWR
I found a manual 4-way switch that should work nicely. Thanks Don.
Bret/N4SRN



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Re: [Elecraft] [P3] P3TXMon Wattage/SWR

[Bob via Elecraft]

And if your a typical ham curiosity will have you opening the minibox to see 
what makes it tick.   Having done that the U box lid can be put on wrong so the 
labeling is incorrect.


Learned that on my own

73,
Bob
K2TK  ex KN2TKR (1956) & K2TKR


On 8/27/2017 5:36 AM, Harlan Sherriff via Elecraft wrote:

The antenna connects to the "load" connector.

Harlan
K4HES

Sent from my iPhone


On Aug 27, 2017, at 3:06 AM, MaverickNH  wrote:

Possible - which side should LOAD be connected...K3S or Antenna?
Bret/N4SRN


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Re: [Elecraft] [P3] P3TXMon Wattage/SWR

[Glenn Anderson]

Is it the same sensor that is used with the W2 power meter? If so, can one 
sensor drive both devices?
Glenn WB5TUF
 Original message From: MaverickNH <cbjesse...@comcast.net> 
Date: 8/27/17  10:55  (GMT-06:00) To: elecraft@mailman.qth.net Subject: Re: 
[Elecraft] [P3] P3TXMon Wattage/SWR 
I found a manual 4-way switch that should work nicely. Thanks Don.
Bret/N4SRN



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Re: [Elecraft] [P3] P3TXMon Wattage/SWR

[MaverickNH]

I found a manual 4-way switch that should work nicely. Thanks Don.
Bret/N4SRN



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Re: [Elecraft] [P3] P3TXMon Wattage/SWR

[Don Wilhelm]

Bret,

Yes, get a 2nd P3TXMON and get a switch to change the RJ-45 cable 
between the two sensors.  The switch will likely be a manual one.


73,
Don W3FPR

On 8/27/2017 8:34 AM, MaverickNH wrote:

And while I'm at it, is there a way to put a P3TXMON on both ANT1 and ANT2?

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Re: [Elecraft] [P3] P3TXMon Wattage/SWR

[MaverickNH]

And while I'm at it, is there a way to put a P3TXMON on both ANT1 and ANT2?

Bret/N4SRN



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Re: [Elecraft] [P3] P3TXMon Wattage/SWR

[MaverickNH]

Yep - LOAD to Antenna. That's what I thought should be correct. So why I
installed it backwards last August, I'll never know! I just reversed it.

Numbers look spot on now. *And* I see the UPS I'm using appears to limit
output if I exceed the power draw specification. I just installed the
software for that UPS and see nowhere in the documentation that it doesn't
just limit to maximum wattage but sharply cuts wattage output if I hit the
limit. So many of my FT8 TX cycles have been dropped from 100W to 20-25W by
the UPS circuit when I exceed the limit.

I'll switch in another higher capacity UPS this week.

BRET/N4SRN



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Re: [Elecraft] [P3] P3TXMon Wattage/SWR

[Harlan Sherriff via Elecraft]

The antenna connects to the "load" connector. 

Harlan 
K4HES

Sent from my iPhone

> On Aug 27, 2017, at 3:06 AM, MaverickNH  wrote:
> 
> Possible - which side should LOAD be connected...K3S or Antenna?
> Bret/N4SRN
> 
> 
> 
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Re: [Elecraft] [P3] P3TXMon Wattage/SWR

[MaverickNH]

Possible - which side should LOAD be connected...K3S or Antenna?
Bret/N4SRN



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Re: [Elecraft] [P3] P3TXMon Wattage/SWR

[Alan]

Any chance the sensor unit is hooked up backwards?  (i.e. transmitter 
connector to antenna and vice versa)


Alan N1AL


On 08/24/2017 03:07 AM, MaverickNH wrote:

K3S100/KAT100 rig with P3, P3SVGA and P3TXMON Directional Coupler 200W.

When TX at 100W, on 80m for example, the PEP on the P3 shows 2.4W PEP on the
120W scale and SWR is full scale at 99.0.

I have put a Bird43 at my antenna base and verified 64W just before the
SG-235 remote ATU on my 43ft Vertical (it's far away on RG213). SWR on
KAT100 Bypass is 1.2 by remote ATU and down to 1.0 with KAT100 enabled.

Must be I have things set up wrong on the TXMON?

Bret/N4SRN



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Re: [Elecraft] [P3] P3TXMon Wattage/SWR

[MaverickNH]

Hi Don,

My mistake - yes, the internal ATU option for K3S is installed. I'll try as
you suggested and report back. Thanks!

Bret/N4SRN



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Re: [Elecraft] [P3] P3TXMon Wattage/SWR

[Don Wilhelm]

Bret,

The most common cause of a high SWR is 1) you do not have the right 
antenna selected or 2) you have a bad (or loose) coax jumper or a coax 
fault in the coax to your antenna.


What happens if you do not connect the TX Monitor coupler in the coax chain?

There is a remote possibility that you have a bad TX Monitor coupler, 
but that would be rare.


Have you "trained" the tuner to the antenna before inserting the TX 
Monitor coupler?


Note: the KAT100 is only for use with the K2 and it is an external 
enclosure.  If you are attempting to use the KAT100 with the K3S, it 
will not work, you must use the internal KAT3 tuner.


With the remote tuner at the base of the antenna, you should be setting 
the internal tuner to bypass.


73,
Don W3FPR

On 8/24/2017 6:07 AM, MaverickNH wrote:

K3S100/KAT100 rig with P3, P3SVGA and P3TXMON Directional Coupler 200W.

When TX at 100W, on 80m for example, the PEP on the P3 shows 2.4W PEP on the
120W scale and SWR is full scale at 99.0.

I have put a Bird43 at my antenna base and verified 64W just before the
SG-235 remote ATU on my 43ft Vertical (it's far away on RG213). SWR on
KAT100 Bypass is 1.2 by remote ATU and down to 1.0 with KAT100 enabled.

Must be I have things set up wrong on the TXMON?

Bret/N4SRN



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Re: [Elecraft] P3 - P3TXMON

[Robert Nobis]

Not yet.  Hopefully, they will start shipping this week.

73,


Bob Nobis - N7RJN
n7...@nobis.net


 On Jul 27, 2015, at 05:43, Bill Wiehe via Elecraft elecraft@mailman.qth.net 
 wrote:
 
 Just wondering if anyone received their P3TXMON  as yet.Bill-W0BBI
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