Can we please get back to Elecraft topics.
On 10/14/2020 20:39, Mike Short wrote:
Years of mismanagement contribute to the fires. Forest Service and states
have not culled dead trees, allow logging, and not done controlled burns to
reduce the fuel. Building homes in canyons with Santa Ana winds
The Creek Fire was burning through forests that were 80-90% bark beetle kill
in mountain wilderness. It is simply not possible to “thin” that. From 2014 to
2018,
the number of dead trees in California increased from 11 million to 147 million.
Anyone who thinks there is a simple solution needs to
Years of mismanagement contribute to the fires. Forest Service and states
have not culled dead trees, allow logging, and not done controlled burns to
reduce the fuel. Building homes in canyons with Santa Ana winds also does
not help. Until there is a serious change in how forests are managed, this
I think you have a skewed view of the situation, probably understandably
so given your own vulnerability to that fire. I can find tons of media
information specifically on the Bobcat Fire with almost daily datelines
when I do a Google search, and I know from personal experience with
wildfire
Martin, very glad I found your post! Just did the conversion on my HS-5’s, to
take advantage of my K3’sub rcvr, but I was following the Hints & Kinks
article from QST (Jan, 05). He never mentioned the extremely fine speaker
connecting wire, and I ended up de-soldering the white side, and breaking
Here are the stations that checked in to the Sunday SSB Net. Again, a big thank
you to the relay stations who help make this net possible for more people to
check in. I will try not trying to re position the columns to see if that
affects the digest version. Eric WB9JNZ
Call Name
For Sale: P3 Panadapter. Factory built; in excellent condition; original
owner; non-smoking home. Serial #42XX. Includes all original accessories
including Owner's Manual and all cables that came with the P3.
Will ship to all 50 states and all Canadian provinces. $495.00 plus shipping.
PayP
Would love to send some of our rain your way. Already 87.5” at my house near
Atlanta this year. We’ve been close to 80” a couple of times before. Expecting
to bust 90” easily.
tnx
Mike / W5JR
Alpharetta GA
> On Oct 14, 2020, at 17:02, Dave wrote:
>
> I know I was asked by FEMA to head west
On 2020-10-14 18:45:-0400, E.H. Russell wrote:
>Hi Rich,
>
>I wanted a similar result, that is noise canceling headphones combined with
>a headset mic. After many trials, I came to the following solution:
>
>Bose QC35 headphones on wired connection
>Shure MX153B/O-TQG headset
Thank
Hi Rich,
I wanted a similar result, that is noise canceling headphones combined with
a headset mic. After many trials, I came to the following solution:
Bose QC35 headphones on wired connection
Shure MX153B/O-TQG headset
They both are corded. The Shure fits over the ear and under
The simplest answer is when an area has numerous fires consuming homes, acres
and a few lives in excess of the ‘norm’; there will never be enough resources
available in a timely manner.
Every fire, regardless of which agency is responsible (Fed, state, local) is
noted and prioritized And addre
I have been following this thread with interest. I am considering the Bose
QC-35 headphones. I wanted a boom mic to go with, but I have not found one with
decent reviews. Has anyone experience with one that works w the QC-35 II? I
guess that by plugging into the headphone the boom mic disconnect
I know I was asked by FEMA to head west to help as a COM-T. Unfortunately I am
now disabled from a very rare infection that resulted in severe cardiac and
pulmonary issues or I would have gone.
There are firefighters fron here in NJ and nearby states that have gone out and
some are there now.
I think the context of the conversation was Bluetooth wireless headsets (I
referred to them as "wireless"), which of course are digital. At any rate
that's what I was referring to. Sorry for any confusion.
ED / W2RF
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of
So I read not only K6XX's report, but the entire issue of the Jug.
http://nccc.cc/jug/2020/09sep2020.pdf . I am completely floored by the
complete destruction of Bob's place. Bob, I don't know if you're a believer,
but I for one am praying for strength for you, my friend.
My impression of the
On 10/14/2020 10:45 AM, Grant Youngman wrote:
While I realize that precision in statements is important … this is cutting a
mighty fine point. OF COURSE it’s the digital processing that causes the
delays. It’s perfectly reasonable to assume in this group that we know what we
mean when we say
No sweat Bill. Sh*t happens. :-D
73,
Alan. G4GNX
-- Original Message --
From: "Bill Coleman"
To: "Alan - G4GNX"
Cc: "Elecraft"
Sent: 14/10/2020 18:55:01
Subject: Re: [Elecraft] [K3] Issue with HI CUR on 12m
In this case, it wasn’t RG-213, but RG-303. The author regrets the error.
Sorry to pick you up on this Bill, but you've been rather misleading on
your description. A current choke (common mode choke) is not even 1:1 as
in a transformer, there is no ratio, primary to secondary. You rightly
say that you're using a CHOKE which is NOT a balun "balanced to
unbalanced tran
In this case, it wasn’t RG-213, but RG-303. The author regrets the error.
> On Oct 14, 2020, at 1:45 PM, Alan - G4GNX wrote:
>
> Not wishing to pick a fight, but he said that he is using a balun rated at
> 1KW.
>
> What you describe is a common mode choke and as I'm sure you know, that is
> n
I’ve had other problems with this antenna when the 17m traps broke down about
three years ago.
Looking back at my station notes, I’m wrong. It wasn’t RG-313, it was RG-303.
Sorry for the error. This is a small diameter (0.170”) coax with a solid teflon
dielectric.
> On Oct 14, 2020, at 1:17
“Balun” is also misleading because “balanced” transmission line is a misleading
idea. Whether the transmission line is coax or two-wire, it can carry both
differential mode and common mode currents.
I prefer the words “choke” and “transformer”.
wunder
K6WRU
Walter Underwood
CM87wj
http://observ
Isn’t the name apt, though?
A feedpoint choke like this does manage the interface from the unbalanced coax
to the balanced antenna by inhibiting the flow of common-mode currents. Hence,
Bal-Un.
Agree that the term is insufficiently descriptive.
> On Oct 14, 2020, at 12:57 PM, Jim Brown wrote:
While I realize that precision in statements is important … this is cutting a
mighty fine point. OF COURSE it’s the digital processing that causes the
delays. It’s perfectly reasonable to assume in this group that we know what we
mean when we say that a “wireless” headset introduces delay, and
Not wishing to pick a fight, but he said that he is using a balun rated
at 1KW.
What you describe is a common mode choke and as I'm sure you know, that
is not a transformer which is what I described.
I can see Jim's frustration. Folks really need to get to grips and
properly understand the t
It’s a current (choke) 1:1 balun. Ferrite beads over coax. There are no turns,
there is no primary.
> On Oct 14, 2020, at 9:19 AM, Alan - G4GNX wrote:
>
> I presume that you disconnected the feeder from the balun when you did the DC
> Ohms test? If not, there is something wrong because you sho
Thank you. I get tired of explaining this to folks.
__
Clay Autery, KY5G
(318) 518-1389
On 10/14/20 12:00, Jim Brown wrote:
On 10/14/2020 8:31 AM, E.H. Russell wrote:
Wireless introduces latency, wired does not.
DIGITAL introduces latency, NOT radio. ANALOG radio over sh
Analog radios have almost no latency, but it's almost impossible to find a
pure analog radio anymore. Most conventional radios switch over to DSP in
the IF stage, which introduces anywhere from a few ms of latency up. For
example, the TS-890s hybrid has about 25ms receive latency. Then when you go
The Digital Unit for the KPA500 is the perfect addition to your shack.
It shows on the top line:
Output in watts
O/S for operate or standby mode
Voltage
Temperature
Bottom line:
Band the amp is tuned to
SWR at the amp
Current used
With the display at your operating position you can monitor all f
AA4LR is using #43 ferrite beads on RG-313 coax. I am not sure what
RG-313 is however there should be no ohm meter short unless he is
using a hairpin match. Perhaps there is a flaky connection somewhere
in his system. I had a lot of RF feedback problems with my K3S when
using a corroded s
Jim. I agree about the MISS-use of the word balun. As the word is
actually supposed to represent a balanced to unbalanced TRANSFORMER, I
have used it in its correct sense.
If I had meant common mode choke, I would have said so.
If the OP is not using a balun in the true sense of the word, then
On 10/14/2020 8:31 AM, E.H. Russell wrote:
Wireless introduces latency, wired does not.
DIGITAL introduces latency, NOT radio. ANALOG radio over short distances
does NOT add latency. In systems like Bluetooth, it is the A/D and D/A
conversions that add latency, NOT the radio transmission of t
On 10/14/2020 6:19 AM, Alan - G4GNX wrote:
I presume that you disconnected the feeder from the balun when you did
the DC Ohms test? If not, there is something wrong because you should
see almost a dead (DC) short through the primary of the balun.
Here's an example of where the word "balun" blo
There are newer headsets claiming 40ms latency, but the host must support
the LL format. My estimate for the QC-35 which uses the ATX format is in the
range of 150-250ms. This may not be a problem at slower CW speeds for some
folks, but I couldn't tolerate it.
ED / W2RF
-Original Message--
Sorry, but I need to correct a typo. The cable included with the headphones is
2.5mm at the headphones and 3.5mm at the other (radio) end, so an adaptor is
required, though not provided.
73, Jim N7US
-Original Message-
The rechargeable battery with noise cancelling on and Bluetooth
After reading a positive review and to reduces wires at my operating position,
I connected a bluetooth transmitter to my K3/0 and tried a bluetooth headset.
The latency was so bad that I just could not send cw using my paddles. I
attached a wire to the headphones and the problem went away.
The rechargeable battery with noise cancelling on and Bluetooth off is rated at
40 hours. It uses the same USB charging plug as my Logitech keyboard, so I
have a charging cable on my desk.
I connect to my K3S with the cable, which is inadequate. It's 4' long,
lightweight, and flimsy. The jac
PS -- latency specs are published on most headsets. That is how I selected
this model,
K4TO
ps
On Wed, Oct 14, 2020 at 11:35 AM Dave Sublette wrote:
> I use a bluetooth set from Avantree and there is no latency that I can
> detect. I operate CW almost exclusively, using a key paddle and c
I use a bluetooth set from Avantree and there is no latency that I can
detect. I operate CW almost exclusively, using a key paddle and copying in
my head. I don't know how they would work with keyboard and speeds above
25 WPM
Dave, K4TO
On Wed, Oct 14, 2020 at 11:32 AM E.H. Russell wrote:
> W
Wireless introduces latency, wired does not. Definitely use wired for CW.
ED / W2RF
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Jim Miller
Sent: Wednesday, October 14, 2020 11:13 AM
To: Jim McDonald
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K4 He
How about latency for CW either wired or wireless?
How do you deal with battery life in contesting?
Stay safe!
Jim ab3cv
On Wed, Oct 14, 2020 at 10:35 AM Jim McDonald wrote:
> Over the ear - very comfortable.
>
> Top rated (87) by Consumer Reports - tied with the new model.
>
> 73, Jim N7US
I would be curious to know if the K4 has been tested on Amtor or Pactor.
The early firmware in the K3 was modified to work with these quick
turnaround modes.
73 Dave G4AON
--
Sent from my iPhone SE
__
Elecraft mailing list
Home: http://
Over the ear - very comfortable.
Top rated (87) by Consumer Reports - tied with the new model.
73, Jim N7US
-Original Message-
Do the QC-35 rest on your ear or are they over the ear?
Rich - N5ZC
On 10/14/2020 7:59 AM, Jim McDonald wrote:
> I just bought a pair yesterday at a closeout
They are over ear, which helps make the noise cancelling extremely effective,
and also the headset is not tiring for long periods of use in contests, for
instance. The prime day price of $199 on amazon is an excellent buy in my
opinion.
ED / W2RF
-Original Message-
From: elecraft-bo
I presume that you disconnected the feeder from the balun when you did
the DC Ohms test? If not, there is something wrong because you should
see almost a dead (DC) short through the primary of the balun.
I must admit I put off replacing my antenna until I was forced to. Might
be the way to go.
Do the QC-35 rest on your ear or are they over the ear?
Rich - N5ZC
On 10/14/2020 7:59 AM, Jim McDonald wrote:
I just bought a pair yesterday at a closeout price of $170 from my local
Costco. They have been discontinued. Costco online is now out of stock, but
some stores still have them. A
I just bought a pair yesterday at a closeout price of $170 from my local
Costco. They have been discontinued. Costco online is now out of stock, but
some stores still have them. Amazon has them for $199 now.
My favorite headphones up to now has been Sennheiser HD 280 PRO but these sound
grea
I was not seeing any SWR shifts on this antenna. A check with an ohmmeter shows
no shorts.
This antenna is currently on the ground due to other work on the tower. I’m
considering replacing the antenna entirely. It’s been up over 10 years, and the
traps could use re-work.
> On Oct 13, 2020, at
While it may not be a “perfect” material, it was what I had on hand, and I
measured over 800 ohms choking impedance on the band of interest.
It’s definitely doing something useful.
I have your cookbook, and will use it for future projects.
> On Oct 12, 2020, at 10:05 PM, Jim Brown wrote:
>
>
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