I would too. But the size sure makes it easier for portable operation-one of
the great features of the K3.
John N1JM
On Wed, Jul 21, 2010 at 10:17 PM, Rick Tavan N6XI [via Elecraft]
ml-node+5324055-564332814-44...@n2.nabble.comml-node%2b5324055-564332814-44...@n2.nabble.com
wrote:
I don't
I haven't used my KX1 in a while, but I noticed it is running over 6 watts
when connected to a 13.8 volt power supply on 30 and 40 meters. 20 meters is
about 4.2 watts and 80 meters is between 4.7 and 5.0 watts.
Is this excessive and will it cause damage or a dirty signal? If there is a
Ok figured I'd ask here and see if someone had some input on the
differences here. Hopefully someone has done more design with these
than I...
My application is that I'm looking for connectors to install on some
high end home made band-pass filters.
83-1R;
The 83-798A has a Teflon insulator - this is what makes it different.
They're all equivalent for low frequency, low power (200w) work which I
presume your bandpass filters will be.
High-End? What design?
-Original Message-
From: elecraft-boun...@mailman.qth.net
This weekend, an all Elecraft IOTA contest excursion to NA-067 Core
Banks, NC will activate N4A during the competition. K3 and K2 versions
will be used. Please give us a shout!!
73,
Dan -- N3ND
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Home:
GM: Can anyone at Elecraft provide an update on the availability of the P3
Manual?
73, Doug VE3MV
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Post:
Based on W3NQN's filters and rated for 200W.
Makes sense on the teflon insulator... I assume that that only makes
the difference when doing higher power? I do think that whenever I'm
making an antenna that is to have a connector blow torch soldered to a
copper pipe or something I'm going to buy
Jim,
Lower the power when running on the 13.8 volt supply - 4 watts or a bit
less. The components in the PA output circuit will thank you and live a
longer life.
You can use a slim flatblade screwdriver and adjust R4 through the hole
in the bottom of the enclosure (and also through the
A word of caution about SO-239 / PL-259's ...
In some connector applications ... particularly power
dividers and other applications that are impedance-
conscious ... SO-239 / PL-259 connectors are not
suitable.
They're -not- 50-ohm connectors. This is why one usually
sees Type-N connectors
Jim :
I made the documented power mod to my KX1 as I was getting too little power
out, but then I
had a similar experience to yours when running off of a power supply or a fully
charged SLA battery so
I built a poor mans voltage regulator that I can put in series with my power
cable when
I am making plans to purchase a K3. I will most likely start with the
bare-bones /10 version. I ultimately want to have the voice recorder
option. Looking at the assembly manual for this, it strikes me that
it might be advisable to install this as part of the original build
rather than
That argument does not make sense to me. The front panel is not
difficult to remove at all.
Removing the front panel from the K3 is quite different than
disassembling the front panel assembly.
Of course, if you have the current budget to purchase it now, yes it is
a little easier to include it
In some connector applications ... particularly power
dividers and other applications that are impedance-
conscious ... SO-239 / PL-259 connectors are not
suitable.
This is NEVER the case at 30 MHz and lower, so long as connection to the
connector are properly done. The total impedance bump
SO-239 / PL-259 connectors are not suitable.
WRONG! This is another myth, repeated and repeated until it becomes
accepted. This is HF, not UHF. The impedance of the connector only
matters when the frequency is high enough that the length of the
transmission line that the connector comprises
Makes sense on the teflon insulator... I assume that that only makes
the difference when doing higher power?
It mostly makes a difference in soldering. The measured voltage breakdown of
a standard Amphenol SO-239 is well over 5000 volts peak. The arc point is
normally the air gap between the
I agree with Tom. The biggest problem, from my perspective, with the UHF
connectors is the variability of attachment to the cable. I have no experience
with crimp varieties, they may mitigate the issue, but the solder on types are
ripe for trouble.
The other problem with them if you are
Even at 144 MHz, UHF connectors are probably acceptable, with the
bump being 1 cm in length compared to 200 cm. I think more at issue
is the environmental quality of the dielectric. The old military ones,
with what we used to call mud as the dielectric material are really
not very
Has there been any further thought of developing variable bandwidth filters for
the K3? Roy Morris W4WFB
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Post:
Commenting as one who waited to install the DVR: as Don says, it's not all
that difficult to do.
That said, the DVR is so good, I wished I had purchased it originally.
So, I would recommend getting it now because it works so well - not
because of difficulty of installation later.
73,
Bob W5OV
On Thu, 2010-07-22 at 10:27 -0700, Wes Stewart wrote:
The other problem with them if you are trying to do any precision
measurements---an oxymoron I suppose---is that any decent instrumentation
will have type N connectors, thus adapters are necessary.
It's a little-known fact that a male N
My experience with SO-239' / PL-259's -was- at
VHF and UHF, and I said so in my posting.
I was made aware of this when the Colorado Springs
radio club ordered a 4-port divider to feed their 2M
repeater's antennas and they specified / insisted on
me building it with SO-239's. I shipped it and
The K3 seems to remember VOX on/off on a per band basis.
Any chance to have it on a per mode basis?
73, Mike NF4L
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On third thought, disregard the previous post, and revert to #1.
On 7/22/2010 2:01 PM, Mike wrote:
Never mind. Senior-itis strikes again.
On 7/22/2010 1:59 PM, Mike wrote:
The K3 seems to remember VOX on/off on a per band basis.
Any chance to have it on a per mode basis?
73, Mike
Please.
Dunc, W5DC
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On 7/22/2010 10:49 AM, Alan Bloom wrote:
It's a little-known fact that a male N connector is a perfect fit
with a female BNC. Of course, there is no locking mechanism so
you wouldn't want to use it for an antenna connection, but it
works fine for testing on the bench - no adapter necessary.
Hello All,
Does anyone out there have a copy of the latest field test version of K3
Memory Manager - (ref in MCU 3.94 notes)? I understand that it is in beta
testing and has a few issues but is anyone willing to share a copy? I
figure a beta copy with known issues is better then no copy at
Another little known fact is BNCs come in both 50 ohm 75 ohm versions.
I used both 75 ohm (video) 50 ohm (RF) at work.
So verify if it matters to the usage!
--
It's a little-known fact that a male N connector is a perfect fit with a
female BNC.
This week I sent my K3 for a factory update inasmuch as 4500 K3s have been
built since mine.
The pleasant surprise was being told July 19 by Elecraft's Ms. Madelyn the
turn-around would be two weeks.
Thanks, Elecraft crew, one and all!
Bill, W0WOI
Joe:
I had forgotten about that nuance regarding the PFL level!
Yes, its in the manual! I will set that when I get home and
maybe solve my problem via software. Maybe.. What about
your statement regarding the Monitor and CW sidetone... Are
you saying that these signals are not available on the
insidebut I do think that the issue with standard mud type UHFs is
with the durability of the dielectric, not with the impedance bump, at
HF and even low VHF frequencies.
That's an accurate statement John. The largest bump I've even measured with
a SO239 PL259 pair was about 1.05:1 at
Many thanks to Dick for response.
Best 73,
Frank - W6NEK
- Original Message -
From: W6NEK w6...@socal.rr.com
To: Elecraft@mailman.qth.net
Sent: Thursday, July 22, 2010 11:31 AM
Subject: [Elecraft] K3 Memory Manager - MCU 3.94 requesting beta copy
Hello All,
Does anyone out there
On 7/22/2010 11:34 AM, George Jan wrote:
Another little known fact is BNCs come in both 50 ohm 75 ohm
versions. I used both 75 ohm (video) 50 ohm (RF) at work.
Ditto for N series. We used to paint a red ring around the 75
ohm types in our off-the-air monitoring facilities for ease of
Good Luck Dan, hope to work you during the contest.
We will be active from EU-146 with two K3's and one K2 as a spare.
The call will be PA0ABM/p. Please give us a shout too.
73, Maarten
PD2R
2010/7/22 Dan Atchison n...@aol.com
This weekend, an all Elecraft IOTA contest excursion to NA-067 Core
K6KR will be using a K3 (and generator power) on NA-065 (Whidbey Island).
Hope to work you!
73 de Dick, K6KR
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Last night, I built up the following D104 buffer circuit as discussed by
Joe, W4TV.
http://72.52.250.47/images/D104.jpg
Joe's idea works very well. The difference between this circuit and other
D104 buffer circuits as seen on the Internet is that it is powered directly
from the K3's mic lead
I just received my FLEX-1500. I think they have shipped 1,000 of
these in the last few weeks, erasing their backlog dating about 12
months. It has a transmit problem and is going back to the factory for
repair, but examining the unit got me to thinking once more about PC
based SDR,
Adobe .PDF of the same schematic:
http://72.52.250.47/images/D104.pdf
Paul, W9AC
- Original Message -
From: Paul Christensen w...@arrl.net
To: elecraft@mailman.qth.net
Sent: Thursday, July 22, 2010 5:29 PM
Subject: K3 - D104 Buffer Schematic
Last night, I built up the following D104
NA-065 will surely have its share of operators. :)
Me too! But will only get to operate part time this weekend.
-
73,
Greg - AB7R
Whidbey Island WA
NA-065
On Thu Jul 22 14:24 , Dick Dievendorff sent:
K6KR will be using a K3 (and generator power) on NA-065 (Whidbey
Great. There hasn't been a lot of NA-065 activity in recent years
(otherwise I wouldn't have that nice IOTA certificate :^) ). I hope
to get on from NA-065 also (from Bainbridge Island) with my K2, but
won't have a lot of operating time.
73, Bob N7XY
On Jul 22, 2010, at 3:14 PM, Greg -
Lyle Johnson wrote:
I just received my FLEX-1500
Nothing like a little intrigue for our list members :)
Sorry to burden everyone with our internal dialog. I'm sure it isn't
news to anyone that we talk about prospective products constantly
(doesn't everyone?).
In any case, back to our
Paul,
Last night, I built up the following D104 buffer circuit as discussed
by Joe, W4TV.
Thanks for the confirmation. I have found one other reference to this
approach ... it is mentioned at the end of a QST Hints and Kinks
article by K8RRH in June 2002. Although most of the article
~
N2CQ QRP CONTEST CALENDAR
July 24 - Aug 22, 2010
~
Summer FOX Hunt - QRP 20M CW... QRP Contest!
EDT: Each Tue, 9 PM to 1029 PM
UTC: Each Wed, 0100z to 0229z
Info:
Lyle Johnson wrote:
I just received my FLEX-1500
Nothing like a little intrigue for our list members :)
Gawd, I Love/Hate you guys... Keep the ideas flowing, I'll keep buying the
results.
Signed,
N1RX
Confirmed Elecraft groupie...
(we may need some kind of 12-step program...)
Gosh I though someone had filed for documents under the Freedom of
Information Act. But whatever, this sounds like a good scheme. You're right
about PwrSDR being a resource hog. I had to get a dual core cpu just to run
LP Pan smoothly. And yes, Flex's QSK will never fly.
Which reminds meAny
Tom W8JI wrote:
insidebut I do think that the issue with standard mud type UHFs is
with the durability of the dielectric, not with the impedance bump, at
HF and even low VHF frequencies.
A long time ago, the USAF told me that N-connectors, when screwed down
tightly [with fingers, not
Steve Ellington wrote:
Any progress on QSK mode and RIT both running at the
same time (K3)?
Not yet. But I did the math and it looks like I can provide at least a
few hundred Hz (+/-) of RIT in QRQ mode, or what we call CW+.
Thanks,
Wayne
N6KR
Lyle wrote: Low risk way to evaluate a lot of the technology for the KX2 and
possibly the K4 IF section (QSD/QSE, no tune BPF and LPF, Si570 Synth,
switching regulator
A K4 in the worksPlease tell me more :-)
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Dan wrote:
Lyle wrote: Low risk way to evaluate a lot of the technology for the KX2 and
possibly the K4 IF section (QSD/QSE, no tune BPF and LPF, Si570 Synth,
switching regulator
A K4 in the worksPlease tell me more :-)
- Show quoted text -
Uh Ohthis is gonna get real
Dan Copeland wrote:
Lyle wrote: Low risk way to evaluate a lot of the technology
There are no new transceiver projects underway at this time. Lyle's
discussion was speculative, looking at possible directions for future
projects.
We have our hands full fleshing out the Elecraft
Hi ALL
I got my MH2 mic or the k2 and there was no resistor in the box ACK!
I know its a 5.6K Green Blue red, and its a 1/4 watt but is there a better
choice?
and should I get a gold or a silver tolerance?
Off to the telephone shack tomorrow
-Neil
Neil,
The resistance is not critical, so if you have a resistor (of any
tolerance) between 4.7k and 6.8k on hand use that.
Did you have a tan envelope on the package with the 8 jumpers for the
microphone configuration header? If so, look very carefully in that
envelope, the resistor can get
Rene put in a few weekends to get things down to that... The guy's
dedicated! Fun guy to talk to... But you end up finding a lot of guys
like that in this hobby!
Thanks Rene!
~Brett (N7MG)
On Thu, 2010-07-22 at 14:34 -0400, w0...@aol.com wrote:
This week I sent my K3 for a factory update
Wayne and Eric
I'd like to send in my deposits NOW so I can then have the right to
complain about how long delivery is taking.
Where do I send my check?
de Doug KR2Q
tongue firmly in cheek
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Home:
DOUGLAS ZWIEBEL wrote:
Wayne and Eric
I'd like to send in my deposits NOW so I can then have the right to
complain about how long delivery is taking.
Doug,
There's nothing to put a deposit on, and even if it were, it would be
so far out that you'd have to take inflation into account
Don, Thank you for the help, and I did just that, tore the envelope up and
it still wasn't there. Radio is waiting, its ok, its been weeks, it will
wait 1 more day.
-Neil
On Thu, Jul 22, 2010 at 8:29 PM, Don Wilhelm w3...@embarqmail.com wrote:
Neil,
The resistance is not critical, so if you
Few hundred hertz would do it for me just fine.
73, Guy.
On Thu, Jul 22, 2010 at 7:26 PM, Wayne Burdick n...@elecraft.com wrote:
Steve Ellington wrote:
Any progress on QSK mode and RIT both running at the
same time (K3)?
Not yet. But I did the math and it looks like I can provide at
Few hundred hertz would do it for me just fine.
Ditto.
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I have recently entered into the world of CW and participated in my first
contest using both SSB and CW modes. I noticed that you cannot stop the CW
memory playback by activating the PTT (either from a microphone attached to
the front panel or a footswitch plugged in the rear). It could only be
Can hardly wait as the time must be near - hope hope.
73, de Jim KG0KP
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This list
My dad recently got fitted with new hearing aids, and is a ham.
They are here:
http://www.phonak.com/com/b2c/en/products/accessories/communication/icom/ove
rview.html
He did not get the iCOM unit yet, but will probably soon. Any hints, ideas,
etc to help get him back on the air?
Since
Lucky Dog has a new K3 kit serial 4493.
I ordered it Friday, It was shipped Monday,
and arrived at my QTH Wednesday. Wow!
73 de
Jack / W7LD / Lucky Dog
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Snip
Lucky Dog has a new K3 kit serial 4493.
I ordered it Friday, It was shipped Monday, and arrived at my QTH Wednesday.
Wow!
73 de
Jack / W7LD / Lucky Dog
End snip
Congratulations from Instant Coffee (AE6IC.) Hopefully I'll be getting a
P3 shortly.
73, Fred, K3 2241
Do or Do-not.
On 07/23/2010 01:17 AM, Steve Ellington wrote:
Gosh I though someone had filed for documents under the Freedom of
Information Act. But whatever, this sounds like a good scheme. You're right
about PwrSDR being a resource hog. I had to get a dual core cpu just to run
LP Pan smoothly.
Can Rocky
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