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Today's Topics:
1. Re: loss of RX sensitivity (Walter Underwood)
2. Re: loss of RX sensitivity (Wes Stewart)
3. Re: loss of RX sensitivity (Wes Stewart)
4. Re: loss of RX sensitivity (donov...@starpower.net)
5. Re: loss of RX sensitivity (hawley, charles j jr)
6. KAT500 Antenna Grounding (Bob McGraw K4TAX)
7. Time Sync Program for Mac (Richard)
8. Re: Time Sync Program for Mac (John Stengrevics)
9. KPA-1500 and Remotehams.com (Peter Dougherty (W2IRT))
10. Re: Time Sync Program for Mac (Bob McGraw K4TAX)
11. Re: KAT500 Antenna Grounding (Wes Stewart)
12. Entertaining Tales (Bob DeHaney)
13. Re: KX3 encoder dying? (George Pasek)
14. Re: KAT500 Antenna Grounding (Bob McGraw K4TAX)
15. Re: loss of RX sensitivity (Dr. William J. Schmidt)
16. OT: Type N male pin movement (Ken G Kopp)
17. Re: loss of RX sensitivity (donov...@starpower.net)
18. K3/100-F Sold, P3F (Gene Sochor)
19. Re: KAT500 Antenna Grounding (Jim Brown)
20. P3 Panadapter (Don Schroder)
21. Re: P3 Panadapter (Don Wilhelm)
22. Re: loss of RX sensitivity (Wes Stewart)
23. Re: P3 Panadapter (George Thornton)
24. Re: P3 Panadapter (Fred Jensen)
25. Re: P3 Panadapter (Don Wilhelm)
----------------------------------------------------------------------
Message: 1
Date: Mon, 17 Sep 2018 16:45:10 -0700
From: Walter Underwood <wun...@wunderwood.org>
To: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net>
Subject: Re: [Elecraft] loss of RX sensitivity
Message-ID: <cef1df11-28d1-4409-8023-4c4ca0c81...@wunderwood.org>
Content-Type: text/plain; charset=utf-8
The next time someone challenges me on why I only use BNC and Type N
connectors, I?m going to send them this entire discussion.
wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)
On Sep 17, 2018, at 4:41 PM, Don Wilhelm <donw...@embarqmail.com> wrote:
Andy,
The PL259 to SO239 connector "end face" contact is provided only by pressure -
it is not a sliding contact as you would find in a BNC or an N connector. The pressure
is provided only by the tightening of the threaded portion of the PL259.
I ask you - just how much resistance can be expected if you just touch two ends
of wires together without further positive contact?
The "insulating spacer" is any oxidation on either the SO239 or the PL259.
That is why I like silver plated UHF connectors. They may look a bit corroded, but the
silver oxide is conductive even though it can appear brown or black. If you are shopping
for UHF connectors at hamfests, avoid all those nickel-plated ones that a not Amphenol,
but flock to those that are oxidized, and silver plated with Mil Spec designations on
them.
73,
Don W3FPR
On 9/17/2018 6:39 PM, ANDY DURBIN wrote:
" the threads of the PL259 are providing the only contact with the SO239"
In the connectors that you are mating how do you prevent contact between the
end face of the PL259 body and the end face of the SO239 body? You would need
an insulating spacer for your statement to be true.
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Message delivered to wun...@wunderwood.org
------------------------------
Message: 2
Date: Mon, 17 Sep 2018 16:46:28 -0700
From: Wes Stewart <wes_n...@triconet.org>
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] loss of RX sensitivity
Message-ID: <4edb4fb7-4dec-3b77-379d-7c147885a...@triconet.org>
Content-Type: text/plain; charset=utf-8; format=flowed
This is one of those, "it depends" situations.? Depending on the location of the
two center conductor insulators in the plug and socket, the serrated (toothed)
surface of the female connector might well contact the mating plug surface, if
there is a gap between the insulators. In fact the "tighten it with pliers"
crowd might actually be forcing this connection and mistakenly believing that
they are improving the connection via the threads.
Wes? N7WS
On 9/17/2018 3:22 PM, Don Wilhelm wrote:
Chuck,
That is true, but is ignoring the fact that the threads of the PL259 are
providing the only contact with the SO239.
------------------------------
Message: 3
Date: Mon, 17 Sep 2018 16:52:04 -0700
From: Wes Stewart <wes_n...@triconet.org>
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] loss of RX sensitivity
Message-ID: <ceb83556-0242-a797-6ec2-dde6b4744...@triconet.org>
Content-Type: text/plain; charset=utf-8; format=flowed
Pretty much my point made in another post.
In fact, I often take a perverse view of these situations and ask myself, "Self,
if you wanted to screw these two things together without the faces touching, how
difficult would it be to do?"? And of course the answer is, almost impossible.
Wes? N7ws
On 9/17/2018 3:39 PM, ANDY DURBIN wrote:
" the threads of the PL259 are providing the only contact with the SO239"
In the connectors that you are mating how do you prevent contact between the
end face of the PL259 body and the end face of the SO239 body? You would need
an insulating spacer for your statement to be true.
73,
Andy k3wyc
------------------------------
Message: 4
Date: Mon, 17 Sep 2018 20:04:52 -0400 (EDT)
From: donov...@starpower.net
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] loss of RX sensitivity
Message-ID:
<1836022939.17530244.1537229092087.javamail.r...@starpower.net>
Content-Type: text/plain; charset=utf-8
If you have a vector network analyzer you'll discover that BNC
connectors aren't all that great at VHF and above, l oss and
impedance vary with connector axial alignment because the bayonnet
shell doesn't support aligh the connector body very well. Strain relief
is extremely important with BNC connectors. TNC connectors are
far superior but not widely used.
While professionally installed N connectors have superb RF
characteristics, all too often they're improperly installed -- even by
professionals -- leading to damaged connectors if the male pin is
misaligned, or unreliable contact if the pin or socket depth is just a
few millimeters less than the manufacturers specification. I use
only captive pin male N connectors, avoiding the most severe
problems. I never use female N connectors on cables, the N sockets
are much too fragile.
Its hard to beat high quality silver plated UHF connectors at HF and
6 meters. But its important to use a tool to tighten them. That's a
small price to pay for a very reliable connector.
73
Frank
W3LPL
----- Original Message -----
From: "Walter Underwood" <wun...@wunderwood.org>
To: elecraft@mailman.qth.net
Sent: Monday, September 17, 2018 11:45:10 PM
Subject: Re: [Elecraft] loss of RX sensitivity
The next time someone challenges me on why I only use BNC and Type N
connectors, I?m going to send them this entire discussion.
wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)
On Sep 17, 2018, at 4:41 PM, Don Wilhelm <donw...@embarqmail.com> wrote:
Andy,
The PL259 to SO239 connector "end face" contact is provided only by pressure -
it is not a sliding contact as you would find in a BNC or an N connector. The pressure is
provided only by the tightening of the threaded portion of the PL259.
I ask you - just how much resistance can be expected if you just touch two ends
of wires together without further positive contact?
The "insulating spacer" is any oxidation on either the SO239 or the PL259. That
is why I like silver plated UHF connectors. They may look a bit corroded, but the silver
oxide is conductive even though it can appear brown or black. If you are shopping for UHF
connectors at hamfests, avoid all those nickel-plated ones that a not Amphenol, but flock
to those that are oxidized, and silver plated with Mil Spec designations on them.
73,
Don W3FPR
On 9/17/2018 6:39 PM, ANDY DURBIN wrote:
" the threads of the PL259 are providing the only contact with the SO239"
In the connectors that you are mating how do you prevent contact between the
end face of the PL259 body and the end face of the SO239 body? You would need
an insulating spacer for your statement to be true.
______________________________________________________________
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Message delivered to donov...@starpower.net
------------------------------
Message: 5
Date: Tue, 18 Sep 2018 00:10:14 +0000
From: "hawley, charles j jr" <c-haw...@illinois.edu>
To: Walter Underwood <wun...@wunderwood.org>
Cc: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net>
Subject: Re: [Elecraft] loss of RX sensitivity
Message-ID: <3f540cca-95cc-4ddf-9e06-389f999d4...@illinois.edu>
Content-Type: text/plain; charset="Windows-1252"
Trouble is I have to put adapters on the equipment and then go to bnc
Chuck Jack
KE9UW
Sent from my iPhone, cjack
On Sep 17, 2018, at 6:46 PM, Walter Underwood <wun...@wunderwood.org> wrote:
The next time someone challenges me on why I only use BNC and Type N
connectors, I?m going to send them this entire discussion.
wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)
On Sep 17, 2018, at 4:41 PM, Don Wilhelm <donw...@embarqmail.com> wrote:
Andy,
The PL259 to SO239 connector "end face" contact is provided only by pressure -
it is not a sliding contact as you would find in a BNC or an N connector. The pressure
is provided only by the tightening of the threaded portion of the PL259.
I ask you - just how much resistance can be expected if you just touch two ends
of wires together without further positive contact?
The "insulating spacer" is any oxidation on either the SO239 or the PL259.
That is why I like silver plated UHF connectors. They may look a bit corroded, but the
silver oxide is conductive even though it can appear brown or black. If you are shopping
for UHF connectors at hamfests, avoid all those nickel-plated ones that a not Amphenol,
but flock to those that are oxidized, and silver plated with Mil Spec designations on
them.
73,
Don W3FPR
On 9/17/2018 6:39 PM, ANDY DURBIN wrote:
" the threads of the PL259 are providing the only contact with the SO239"
In the connectors that you are mating how do you prevent contact between the
end face of the PL259 body and the end face of the SO239 body? You would need
an insulating spacer for your statement to be true.
______________________________________________________________
Elecraft mailing list
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Message delivered to wun...@wunderwood.org
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Message delivered to c-haw...@illinois.edu
------------------------------
Message: 6
Date: Mon, 17 Sep 2018 21:00:22 -0500
From: Bob McGraw K4TAX <rmcg...@blomand.net>
To: Elecraft List <elecraft@mailman.qth.net>
Subject: [Elecraft] KAT500 Antenna Grounding
Message-ID: <44b2126d-bf69-dc33-4b1c-083fa17a6...@blomand.net>
Content-Type: text/plain; charset=utf-8; format=flowed
I didn't find the answer in the manual, so I'll ask here.?? I do see in
the manual where bleed resistors are applied to the unused antenna
terminals to bleed off static charges.? {page 15, Antenna
Selector......... etc}
My question, do the relays in the tuner take the center conductor of all
three antenna terminals to ground when power is removed? I see that it
switches to ANT 1 when power is off. ?? I suppose I could remove the
covers and explore for myself, and I'll do just that if no one confirms
one way or the other.?? Anyone have a schematic?? That would be nice.
73
Bob, K4TAX
------------------------------
Message: 7
Date: Mon, 17 Sep 2018 22:13:46 -0400
From: Richard <flat...@comcast.net>
To: Elecraft Reflector <elecraft@mailman.qth.net>
Subject: [Elecraft] Time Sync Program for Mac
Message-ID: <a4241d22-18ff-4064-b844-39f90c339...@comcast.net>
Content-Type: text/plain; charset=utf-8
What?s a good simple stand-alone application to keep my Mac?s clock razor sharp
for FT8?
I find that WSJT-X 1.8.0 is triggering my K3S? transmitter up to a full second
late sometimes, typically 0.5 second late.
Cheers!
Richard ? W4KBX
------------------------------
Message: 8
Date: Mon, 17 Sep 2018 22:16:18 -0400
From: John Stengrevics <jstengrev...@comcast.net>
To: Richard <flat...@comcast.net>
Cc: Elecraft Reflector <elecraft@mailman.qth.net>
Subject: Re: [Elecraft] Time Sync Program for Mac
Message-ID: <4c05f2e7-5902-4ae4-80ba-8326688bf...@comcast.net>
Content-Type: text/plain; charset=utf-8
Richard,
In System Preferences, input us.pool.ntp.org <http://us.pool.ntp.org/>
Works fine for my Mac.
73,
John
WA1EAZ
On Sep 17, 2018, at 10:13 PM, Richard <flat...@comcast.net> wrote:
What?s a good simple stand-alone application to keep my Mac?s clock razor sharp
for FT8?
I find that WSJT-X 1.8.0 is triggering my K3S? transmitter up to a full second
late sometimes, typically 0.5 second late.
Cheers!
Richard ? W4KBX
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Message delivered to jstengrev...@comcast.net
------------------------------
Message: 9
Date: Mon, 17 Sep 2018 22:29:52 -0400
From: "Peter Dougherty \(W2IRT\)" <li...@w2irt.net>
To: <Elecraft@mailman.qth.net>
Subject: [Elecraft] KPA-1500 and Remotehams.com
Message-ID: <000301d44ef7$7b8b1c70$72a15550$@net>
Content-Type: text/plain; charset="us-ascii"
Hi all,
I'd like to be able to use my KPA-1500 with Remotehams, but I'm not sure how
to set this up. First off, the baud rate is limited in the RCFOrb server app
to 115200, and secondly, I'm guessing I have to open a port somewhere??
If the only way to do this is drop the baud rate on the KPA, what else will
have to change in other software or with the K3s in order to communicate? I
have the amp running on COM-14, and it is also on my LAN.
Thanks in advance.
----------------------------------------------------
Regards,
Peter Dougherty, W2IRT
DXCC Card Checker/CQ-WAZ Checkpoint
www.facebook.com/W2IRT
------------------------------
Message: 10
Date: Mon, 17 Sep 2018 21:31:42 -0500
From: Bob McGraw K4TAX <rmcg...@blomand.net>
To: Richard <flat...@comcast.net>
Cc: Elecraft Reflector <elecraft@mailman.qth.net>
Subject: Re: [Elecraft] Time Sync Program for Mac
Message-ID: <7b7a4950-4d7a-4416-ac16-9d2838ebc...@blomand.net>
Content-Type: text/plain; charset=utf-8
I first suggest updating to the most current version of WSJT-X.
On receiving FT8 signals, what is the DT time shown for most received signals?
Should be less than 1 second and typically less than 0.3 seconds. If so there
is nothing wrong with your computer time.
Likely the delay is processing time, computer or interface or a TX delay set in
the application.
Bob, K4TAX
Sent from my iPhone
On Sep 17, 2018, at 9:13 PM, Richard <flat...@comcast.net> wrote:
What?s a good simple stand-alone application to keep my Mac?s clock razor sharp
for FT8?
I find that WSJT-X 1.8.0 is triggering my K3S? transmitter up to a full second
late sometimes, typically 0.5 second late.
Cheers!
Richard ? W4KBX
______________________________________________________________
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Message delivered to rmcg...@blomand.net
------------------------------
Message: 11
Date: Mon, 17 Sep 2018 20:30:10 -0700
From: Wes Stewart <wes_n...@triconet.org>
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KAT500 Antenna Grounding
Message-ID: <1caa5325-2af2-56c8-8ac5-251bed28e...@triconet.org>
Content-Type: text/plain; charset=utf-8; format=flowed
Unpowered, the input is connected to Ant 1.? Each output has a 1 meg resistor to
ground, other than that just open relay contacts.
Wes? N7WS.
?On 9/17/2018 7:00 PM, Bob McGraw K4TAX wrote:
I didn't find the answer in the manual, so I'll ask here.?? I do see in the
manual where bleed resistors are applied to the unused antenna terminals to
bleed off static charges.? {page 15, Antenna Selector......... etc}
My question, do the relays in the tuner take the center conductor of all three
antenna terminals to ground when power is removed? I see that it switches to
ANT 1 when power is off. ?? I suppose I could remove the covers and explore
for myself, and I'll do just that if no one confirms one way or the other.??
Anyone have a schematic?? That would be nice.
73
Bob, K4TAX
------------------------------
Message: 12
Date: Tue, 18 Sep 2018 11:42:42 +0200
From: "Bob DeHaney" <bobdeha...@gmx.net>
To: <elecraft@mailman.qth.net>
Subject: [Elecraft] Entertaining Tales
Message-ID: <001a01d44f33$f28277b0$d7876710$@gmx.net>
Content-Type: text/plain; charset="utf-8"
Guys, W4MLE (SK) was just trying to tell me that Propagation and Antennas will
always be waiting to surprise me by functioning unexpectedly.
For instance, using a light bulb as a dummy load and having a QSO with the
light bulb as my antenna. Or calling CQ in the afternoon on 40m with 75 Watts
into a low, more or less tuned dipole, and having I1ER come back to me as my
very first Trans-Atlantic QSO. I think that?s when the DX Bug bit me ?
Vy 73 de Bob DJ0RD/WU5T
------------------------------
Message: 13
Date: Tue, 18 Sep 2018 07:26:26 -0500
From: "George Pasek" <pasek...@umn.edu>
To: "Bob McGraw K4TAX" <rmcg...@blomand.net>
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX3 encoder dying?
Message-ID: <CE6AAC7BB1CF4C3380261F867E4F77B7@JRPC>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I opted to get a RSA number from Elecraft and ship it out to them. I no
longer have my workbench (or keen eyesight/steady soldering hand for that
matter) so I really don't want taking a chance to do that type of work on
something as expensive as the KX3. I told them to replace all 4 of the
small encorders and I should be good-to-go for many more years.
George
WD0AKZ
-----Original Message-----
From: Bob McGraw K4TAX
Sent: Sunday, September 16, 2018 4:49 PM
To: George Pasek
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX3 encoder dying?
Encoders can be cleaned. I've done it in several radios, several brands. It
is usually necessary to open the radio, remove the encoder. Then carefully
open the encoder, clean the wiper contacts and the stationary contacts with
contact cleaner. These are simply a stepping switch. Only one moving part.
Reassemble in the reverse process.
Bob, K4TAX
Sent from my iPhone
On Sep 16, 2018, at 4:39 PM, George Pasek <pasek...@umn.edu> wrote:
I noticed today that when I tried to fine adjust the mic level with the
mic/keyer/pwr encoder that it may display the mic level but won't change
it or if it does it's very erratic. The response is the same with the
keyer speed in CW mode and when attempting to adjust the power level.
Turning the knob fast usually does nothing, turning it slow may move it a
bit and wiggling the knob seems the best way to see results. I never had
a problem with it till today and I have made no changes to it or it's
operation. I have been running it on WSPR at 500mw with a 2 minute Tx and
8 minute Rx for a few weeks now and always tweak the mic gain for the
blinking ALC 5th bar when I change bands. I'm assuming it's the encoder
going bad and will have to be sent to the Elecraft Hospital for a part
replacement surgery but I thought I'd check here first in case I'm missing
something.
tnx
de George
WD0AKZ
---
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------------------------------
Message: 14
Date: Tue, 18 Sep 2018 08:15:53 -0500
From: Bob McGraw K4TAX <rmcg...@blomand.net>
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KAT500 Antenna Grounding
Message-ID: <22fca47a-7a70-a68e-0459-6424106d6...@blomand.net>
Content-Type: text/plain; charset=utf-8; format=flowed
Thanks Wes.???? I hesitated to un-stack the KPA500 off of the KAT500 and
disconnect all the cables.??? I suppose I need to look at my
configuration to reduce the likelihood of any damage to the PIN diodes
in the KPA500.?? Lightning protection is good on the outside of the
house but static discharge probably needs review.
73
Bob, K4TAX
On 9/17/2018 10:30 PM, Wes Stewart wrote:
Unpowered, the input is connected to Ant 1.? Each output has a 1 meg
resistor to ground, other than that just open relay contacts.
Wes? N7WS.
------------------------------
Message: 15
Date: Tue, 18 Sep 2018 10:29:41 -0500
From: "Dr. William J. Schmidt" <b...@wjschmidt.com>
To: "'Elecraft Reflector'" <elecraft@mailman.qth.net>
Subject: Re: [Elecraft] loss of RX sensitivity
Message-ID: <01ed01d44f64$6b467310$41d35930$@wjschmidt.com>
Content-Type: text/plain; charset="UTF-8"
[[The next time someone challenges me on why I only use BNC and Type N
connectors, I?m going to send them this entire discussion.]]
Unfortunately this is not perfect either. If you use an "N" connector on long runs of
heliax in a cold climate, you must be aware that the coefficients of expansion of the center
conductor and the shield can be different... and on several occasions, I have seen the center pin
pull back from the connector (and essentially disconnect) because the center conductor contracted
more than the shield. Nb. This does not happen with all "N" connectors. This is less of
a problem with BNC connectors because the coax used is generally has a somewhat flexible shield.
---
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------------------------------
Message: 16
Date: Tue, 18 Sep 2018 09:40:46 -0600
From: Ken G Kopp <kengk...@gmail.com>
To: "Dr. William J. Schmidt" <b...@wjschmidt.com>, Elecraft
<elecraft@mailman.qth.net>
Subject: [Elecraft] OT: Type N male pin movement
Message-ID:
<cad4cdtp7x6iw_uwssowqztf4ysb0odj5r2r162xuyqwuzoy...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
UG-1185's have captive center pins to avoid this problem.
Caution: There are two ways the Teflon spacers can be assembled. The
recessed sides face outward.
73 !
K0PP
On Tue, Sep 18, 2018, 09:30 Dr. William J. Schmidt <b...@wjschmidt.com>
wrote:
[[The next time someone challenges me on why I only use BNC and Type N
connectors, I?m going to send them this entire discussion.]]
Unfortunately this is not perfect either. If you use an "N" connector on
long runs of heliax in a cold climate, you must be aware that the
coefficients of expansion of the center conductor and the shield can be
different... and on several occasions, I have seen the center pin pull back
from the connector (and essentially disconnect) because the center
conductor contracted more than the shield. Nb. This does not happen with
all "N" connectors. This is less of a problem with BNC connectors because
the coax used is generally has a somewhat flexible shield.
---
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https://www.avg.com
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Message: 17
Date: Tue, 18 Sep 2018 11:46:50 -0400 (EDT)
From: donov...@starpower.net
To: Elecraft Reflector <elecraft@mailman.qth.net>
Subject: Re: [Elecraft] loss of RX sensitivity
Message-ID:
<477163436.19004364.1537285610457.javamail.r...@starpower.net>
Content-Type: text/plain; charset=utf-8
Captivated pin N connectors completely resolve the problem of the
center pin pulling back in cold weather.
73
Frank
W3LPL
----- Original Message -----
From: "Dr. William J. Schmidt" <b...@wjschmidt.com>
To: "Elecraft Reflector" <elecraft@mailman.qth.net>
Sent: Tuesday, September 18, 2018 3:29:41 PM
Subject: Re: [Elecraft] loss of RX sensitivity
[[The next time someone challenges me on why I only use BNC and Type N
connectors, I?m going to send them this entire discussion.]]
Unfortunately this is not perfect either. If you use an "N" connector on long runs of
heliax in a cold climate, you must be aware that the coefficients of expansion of the center
conductor and the shield can be different... and on several occasions, I have seen the center pin
pull back from the connector (and essentially disconnect) because the center conductor contracted
more than the shield. Nb. This does not happen with all "N" connectors. This is less of a
problem with BNC connectors because the coax used is generally has a somewhat flexible shield.
---
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Message: 18
Date: Tue, 18 Sep 2018 10:50:25 -0500
From: Gene Sochor <gsoc...@interaccess.com>
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3/100-F Sold, P3F
Message-ID: <201809181550.w8ifosu1028...@mail40c28.carrierzone.com>
Content-Type: text/plain; charset="us-ascii"; format=flowed
K3/100-F s/n 6587 has been sold.
P3-F s/n 2191 New, unopened in original packing is available for
$500. Shipping included continental US
This had been purchased paired with a K3 for an SO2R station that was
never configured.
Gene Sochor N9SW Cell: 630-404-8100
PO Bo 413
Wayne, IL 60184
gsoc...@interaccess.com
------------------------------
Message: 19
Date: Tue, 18 Sep 2018 09:20:54 -0700
From: Jim Brown <j...@audiosystemsgroup.com>
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KAT500 Antenna Grounding
Message-ID:
<6ae8bafd-713f-5418-55da-b0ad63296...@audiosystemsgroup.com>
Content-Type: text/plain; charset=utf-8; format=flowed
On 9/18/2018 6:15 AM, Bob McGraw K4TAX wrote:
Lightning protection is good on the outside of the house but static
discharge probably needs review.
Bob,
Take a look at the arrestors that Array Solutions sells, which are the
circuit that were built under the ICE name until the owner died a decade
or so ago, and that they sold. I'm now using them, and have them mounted
in a large Hoffman enclosure. I like the circuit because I believe it is
a better solution to the discharge problem, and I like their
construction because the GDT is user replaceable. If you lose the GDT in
a Polyphaser you throw it away and buy a new one.
https://www.arraysolutions.com/surge-and-rf-protection/as-303u
73, Jim K9YC
------------------------------
Message: 20
Date: Tue, 18 Sep 2018 16:53:25 +0000
From: Don Schroder <donandde...@hotmail.com>
To: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net>
Subject: [Elecraft] P3 Panadapter
Message-ID:
<mw2pr02mb38499742fbe8d82c7fa0b1c2aa...@mw2pr02mb3849.namprd02.prod.outlook.com>
Content-Type: text/plain; charset="utf-8"
Morning!
I have a kit K2 s/n 7818 that is about 2/3rds complete. I?m a newbie and this is my
first radio. I?ve been looking at additions for my non-existent ham shack and am
curious about the Elecraft P3. Looking at the advertising, I see it is for the K3
& K3s, and other radios.
Hence, my question. How many of you consider the P3 to be a must have, and can
it be used with a K2 transceiver? As a side note, what other optional equipment
to the K2 would you consider necessary?
Thanks, and 73!
Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
------------------------------
Message: 21
Date: Tue, 18 Sep 2018 13:12:42 -0400
From: Don Wilhelm <donw...@embarqmail.com>
To: Don Schroder <donandde...@hotmail.com>, "elecraft@mailman.qth.net"
<elecraft@mailman.qth.net>
Subject: Re: [Elecraft] P3 Panadapter
Message-ID: <09776cee-ad62-7290-56bc-0f695a278...@embarqmail.com>
Content-Type: text/plain; charset=utf-8; format=flowed
Don,
You can use it with the K3 (the P3 input can be tuned anywhere between
455kHz and 21 MHz).
You will have to add an IF output to the K2. DX Engineering is now
selling the Clifton Labs buffer amplifier which can be used for that
purpose.
I don't know what documentation is being sent with the DX Engineering
kit, but if you need it, I can supply the original Clifton Labs document
for the K2.
73,
Don W3FPR
On 9/18/2018 12:53 PM, Don Schroder wrote:
Morning!
I have a kit K2 s/n 7818 that is about 2/3rds complete. I?m a newbie and this is my
first radio. I?ve been looking at additions for my non-existent ham shack and am
curious about the Elecraft P3. Looking at the advertising, I see it is for the K3
& K3s, and other radios.
Hence, my question. How many of you consider the P3 to be a must have, and can
it be used with a K2 transceiver? As a side note, what other optional equipment
to the K2 would you consider necessary?
------------------------------
Message: 22
Date: Tue, 18 Sep 2018 10:51:45 -0700
From: Wes Stewart <wes_n...@triconet.org>
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] loss of RX sensitivity
Message-ID: <1e6e24fe-5caa-7ed2-6b4a-6ea8fac49...@triconet.org>
Content-Type: text/plain; charset=utf-8; format=flowed
It's difficult to argue with Frank's experience and expertise.? That said, fools
rush in...
I own some network analyzers, 1) an N2PK which I built with type N connectors,
2) a DG8SAQ VNWA-3, supplied with SMA connectors and 3) a RigExpert AA-55 Zoom
with a SO239.? Professionally, I've used analyzers with type N, 3.5mm (beadless
SMA) and K connectors. With the exception of the AA-55, which only goes to 55
MHz, all of these can be calibrated with "precision" calibration kits that can
cost thousands of dollars.? So far, Frank is right, not a BNC in the bunch.
But that has changed with the introduction of the DG5MK's FA-VA5, one-port
vector analyzer.? I am on the reserve list to buy one of these.? The thing to
note is that it is supplied with a BNC connector.? There has been a lot of
anguish, heartburn, etc about this on the VNWA Yahoo group but the consensus is
that it will be fine and BNC calibration kit has been developed and tested
without issue. https://www.youtube.com/watch?v=X8Z7veGV57o
There are tens of thousands of BNCs on oscilloscopes and other instruments and
I've seldom had an issue with them in 30+ years of lab work.? For quick
disconnect I also use short jumper cables with BNCs to break the connections
between the hardline running to the tower and the cable entrance to the shack
during lightning season.? Admittedly, I'm only running 500 W.? When I can leave
them more permanently connected I revert to type N.
Wes? N7WS
On 9/17/2018 5:04 PM, donov...@starpower.net wrote:
If you have a vector network analyzer you'll discover that BNC
connectors aren't all that great at VHF and above, l oss and
impedance vary with connector axial alignment because the bayonnet
shell doesn't support aligh the connector body very well. Strain relief
is extremely important with BNC connectors. TNC connectors are
far superior but not widely used.
While professionally installed N connectors have superb RF
characteristics, all too often they're improperly installed -- even by
professionals -- leading to damaged connectors if the male pin is
misaligned, or unreliable contact if the pin or socket depth is just a
few millimeters less than the manufacturers specification. I use
only captive pin male N connectors, avoiding the most severe
problems. I never use female N connectors on cables, the N sockets
are much too fragile.
Its hard to beat high quality silver plated UHF connectors at HF and
6 meters. But its important to use a tool to tighten them. That's a
small price to pay for a very reliable connector.
73
Frank
W3LPL
------------------------------
Message: 23
Date: Tue, 18 Sep 2018 17:59:28 +0000
From: George Thornton <gthorn...@thorntonmostullaw.com>
To: "donw...@embarqmail.com" <donw...@embarqmail.com>, Don Schroder
<donandde...@hotmail.com>, "elecraft@mailman.qth.net"
<elecraft@mailman.qth.net>
Subject: Re: [Elecraft] P3 Panadapter
Message-ID:
<cy4pr1601mb1352e696a89558bae790ac5ab4...@cy4pr1601mb1352.namprd16.prod.outlook.com>
Content-Type: text/plain; charset="utf-8"
I have owned both the K2 and K3. Perhaps the most fun I had in HAM radio was
building the K2. I learned a lot about soldering and assembly techniques.
Electronics technology has advanced with miniaturization and surface mount
parts. The skill and equipment requirements for surface mount work is beyond
the average amateur. Elecraft does not offer kits that require surface mount
work.
The assembly process for the K3 is much less satisfying than with the K2. All
circuit boards come pre-assembled and you are pretty much just building the box
and plugging things in.
I also have worked extensively with the P3. I find it very helpful. There is
a wealth of knowledge you get from being able to visually see the spectrum you
are working.
That being said, some of the advantages of the P3 come from its close
integration with the K3. I would believe that close integration would not be
possible with the K2.
There are also other panadapter options including the LP-Pan, which will allow
you to view the K2's spectrum. I much prefer the P3 because of the handy
controls that allow you to adjust the image, but some of those other options
may be less expensive.
Think also of where you might go with all this. The K2 is a wonderful rig and
more than adequate for HF work. If yuou get really serious about this you may,
as I did, choose to upgrade to either the K3s or KX3. The P3 could be used
with the K3s but the KX3 has a different, smaller unit.
-----Original Message-----
From: elecraft-boun...@mailman.qth.net <elecraft-boun...@mailman.qth.net> On
Behalf Of Don Wilhelm
Sent: Tuesday, September 18, 2018 10:13 AM
To: Don Schroder <donandde...@hotmail.com>; elecraft@mailman.qth.net
Subject: Re: [Elecraft] P3 Panadapter
Don,
You can use it with the K3 (the P3 input can be tuned anywhere between 455kHz
and 21 MHz).
You will have to add an IF output to the K2. DX Engineering is now selling the
Clifton Labs buffer amplifier which can be used for that purpose.
I don't know what documentation is being sent with the DX Engineering kit, but
if you need it, I can supply the original Clifton Labs document for the K2.
73,
Don W3FPR
On 9/18/2018 12:53 PM, Don Schroder wrote:
Morning!
I have a kit K2 s/n 7818 that is about 2/3rds complete. I?m a newbie and this is my
first radio. I?ve been looking at additions for my non-existent ham shack and am
curious about the Elecraft P3. Looking at the advertising, I see it is for the K3
& K3s, and other radios.
Hence, my question. How many of you consider the P3 to be a must have, and can
it be used with a K2 transceiver? As a side note, what other optional equipment
to the K2 would you consider necessary?
______________________________________________________________
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: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html Message
delivered to gthorn...@thorntonmostullaw.com
------------------------------
Message: 24
Date: Tue, 18 Sep 2018 11:32:48 -0700
From: Fred Jensen <k6...@foothill.net>
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] P3 Panadapter
Message-ID: <e343bf25-1403-8125-51e3-e9b9ebc85...@foothill.net>
Content-Type: text/plain; charset=utf-8; format=flowed
Congratulations on your K2 Don, I've had #4398 for many years and it is
a fun radio to operate, and will hold it's own with the "big guns" out
there.? Don, W3FPR, is your go-to guy for all things K2.
The P3 is basically a tuneable receiver from just below the AM broadcast
band to somewhere around 20 MHz.? It will "work" with the K2 but you
have to bring out the IF signal.? I put "work" in quotes because the P3
will integrate with a K3 to give several modes of operation.? One very
popular one is "Fixed Tune" where the edges of the display remain fixed
and tuning the K3 moves a cursor.
With the K2, the only mode available is "Tracking Mode" where the center
of the screen is always where you are receiving, and as you tune, the
signals on the band all move.
As far as general P3 usefulness, for me it is huge.? It's all I look at
when I operate.? I operate W7RN remotely on occasion, I really miss the
P3, and I hope Elecraft is working on a remote capability for it.
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 9/18/2018 9:53 AM, Don Schroder wrote:
Morning!
I have a kit K2 s/n 7818 that is about 2/3rds complete. I?m a newbie and this is my
first radio. I?ve been looking at additions for my non-existent ham shack and am
curious about the Elecraft P3. Looking at the advertising, I see it is for the K3
& K3s, and other radios.
Hence, my question. How many of you consider the P3 to be a must have, and can
it be used with a K2 transceiver? As a side note, what other optional equipment
to the K2 would you consider necessary?
------------------------------
Message: 25
Date: Tue, 18 Sep 2018 14:45:33 -0400
From: Don Wilhelm <donw...@embarqmail.com>
To: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net>
Subject: Re: [Elecraft] P3 Panadapter
Message-ID: <00d8fd15-19c1-270d-608e-201ea2e42...@embarqmail.com>
Content-Type: text/plain; charset=utf-8; format=flowed
The main difference between the P3 and PX3 is the input.? The P3 has an
IF input while the PX3 input must be baseband RX I and Q signals.
73,
Don W3FPR
On 9/18/2018 1:59 PM, George Thornton wrote:
I also have worked extensively with the P3. I find it very helpful. There is
a wealth of knowledge you get from being able to visually see the spectrum you
are working.
That being said, some of the advantages of the P3 come from its close
integration with the K3. I would believe that close integration would not be
possible with the K2.
There are also other panadapter options including the LP-Pan, which will allow
you to view the K2's spectrum. I much prefer the P3 because of the handy
controls that allow you to adjust the image, but some of those other options
may be less expensive.
Think also of where you might go with all this. The K2 is a wonderful rig and
more than adequate for HF work. If yuou get really serious about this you may,
as I did, choose to upgrade to either the K3s or KX3. The P3 could be used
with the K3s but the KX3 has a different, smaller unit.
-----Original Message-----
From: elecraft-boun...@mailman.qth.net <elecraft-boun...@mailman.qth.net> On
Behalf Of Don Wilhelm
Sent: Tuesday, September 18, 2018 10:13 AM
To: Don Schroder <donandde...@hotmail.com>; elecraft@mailman.qth.net
Subject: Re: [Elecraft] P3 Panadapter
Don,
You can use it with the K3 (the P3 input can be tuned anywhere between 455kHz
and 21 MHz).
You will have to add an IF output to the K2. DX Engineering is now selling the
Clifton Labs buffer amplifier which can be used for that purpose.
I don't know what documentation is being sent with the DX Engineering kit, but
if you need it, I can supply the original Clifton Labs document for the K2.
73,
Don W3FPR
On 9/18/2018 12:53 PM, Don Schroder wrote:
Morning!
I have a kit K2 s/n 7818 that is about 2/3rds complete. I?m a newbie and this is my
first radio. I?ve been looking at additions for my non-existent ham shack and am
curious about the Elecraft P3. Looking at the advertising, I see it is for the K3
& K3s, and other radios.
Hence, my question. How many of you consider the P3 to be a must have, and can
it be used with a K2 transceiver? As a side note, what other optional equipment
to the K2 would you consider necessary?
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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------------------------------
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End of Elecraft Digest, Vol 173, Issue 14
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