A symmetrical arrangement of radials (which implies more than one) will
reduce common mode current and high-angle radiation, which are usually
considered undesirable (although for local QSOs the high-angle radiation
can be useful).
If you have an unsymmetrical radial arrangement, it's best to
Good Evening,
Twenty meters had deep QSB and summer QRN. But it was fun to hear
you all. I received more email than I did check ins though. I'll work
on that antenna this week and test it next Sunday. I'll build it close
to resonance around 7.1 MHz. From what I have read the radiation
It's a fairly simple antenna. Yes, one radial is all you really "need,"
a couple more help improve efficiency and increase the BW. In the olden
daze [50's], we'd use 3 or 4 and cut them just a little different. Also
increased the BW, especially on 10, and in the later 50's, 10 was open
i’m not interesting in using the 8V line for mic element bias. That was
someone else. My application is to power an external device between a mic and
a K3/K4 from that line.
I can, of course, use a battery. But it would be much simpler if the 8V line
could supply at least 20ma without
Thanks to all who inquired.
Bob Brown, N1CVX
Sent from my iPad
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Harbor Freight now makes a copy of the Pelican.
Apache 5800.
About half the price.
You will love it,
Larry K6ro
-Original Message-
From: charlie carroll
Sent: Sunday, July 26, 2020 6:26 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Pelican case for K3?
Eric:
I use a 1560.
Eric:
I use a 1560. It handles the K3, a paddle, power supply, with some
space left over for cables and misc. other stuff.
73 charlie, k1xx
On 7/26/2020 9:16 PM, eric norris via Elecraft wrote:
Does anybody know what model Pelican case is the best fit for a K3? Thanks!
73, Eric WD6DBM
Does anybody know what model Pelican case is the best fit for a K3? Thanks!
73, Eric WD6DBM
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Post:
Grant,
The MH2/MH4 mic does not use the 8 volts directly - there is a resistor
between the 8 volt supply and the AF line,
and that is where the 10ma is used to power the electret elemant.
The 10 ma. used by the microphone has nothing to do with the total
current available from pin 6.
73,
It’s a electret condenser mike element and requires bias 5.6-10k resister as
Don says.
Brian Denley
KB1VBF
Sent from my iPad
> On Jul 26, 2020, at 7:40 PM, Don Wilhelm wrote:
>
> Steve,
>
> I am not familiar with that particular mic element, but --
>
> If that is a dynamic mic element, no
I have the same question about the current available for the 8V at the mic
connector. Is it limited to 10ma, or will it actually support a somewhat
higher continuous current draw safely. Not just for the k3, but also the K4.
Grant NQ5T
> On Jul 26, 2020, at 7:46 PM, Don Wilhelm wrote:
>
>
Henk,
If indeed it is for a mic preamp, then try it without the preamp. The
K3S has 2 stages of mic AF gain. Normal for the usual ham mics, and a
Hi level for low gain mic elements.
You must turn on bias to have the 8 volts appear at the mic jack. Do
not use with direct connection of a
Steve,
I am not familiar with that particular mic element, but --
If that is a dynamic mic element, no resistor should be used.
If it is an electret type, the normal 5.6k resistor should work fine, it
is not critical - anything between 5.6k and 10k will do fine.
73,
Don W3FPR
On 7/26/2020
Is anyone using this mic element with the K2? If so, what size resistor
did you use between MIC pin 1 and 6?
TU/73,
Steve
W1SRD
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Help:
The reading I've done says only one radial is required; that the
'favoring' in the direction of the radial is not enough to be worried
about; that there is no cancellation from opposing (or just more)
radials. I have used a single radial ground plane and found this to be
true (at 6' over dirt
It set it back to bare min CONFIG. Uninstalling all you installed options. You
have on filter, no KPA3, no ATU, etc. download the kit assembly manual from
Elecraft and go thru the Unstallation of each option.
I don’t know why owners jump to a EEINIT to solve problems. There are less
What are you going to use this voltage for? I think it’s for a mic preamp. It
is not the source of bias for an electret mic. That comes on the mic pin when
turned On in the menu.
Sent from my iPhone
...nr4c. bill
> On Jul 26, 2020, at 2:57 PM, Henk de Vries wrote:
>
> Hi all,
> At the
I use one just like this on 30M, and have always thought of it as a
ground plane. The drooping radials give a good match to 50 ohms.
73 - George, W3HBM
On 7/26/2020 2:36 PM, Fred Jensen wrote:
[This message came from an external source. If suspicious, report to
Howdy y’all
I’m still looking for a 2M module for my K3 if anyone has one and other? What?
Stabilizer or some such that goes with the 2M module do you can use it on CW
and SSB
Thanks
Ronnie W5SUM
w5...@comcast.net
Sent from my iPhone
Parameter init sets the configuration to a default setting, which discards the
configuration of optional modules, including KPA3 and all installed crystal
filters. These can all be changed with either a front panel config menu
choice, some find it easier to use the K3 Utility for crystal
Check that the KPA3 is turned on to "nor" in the config menu. (Just don't
ask me how I know.)
On Sun, Jul 26, 2020 at 2:41 PM Bill DeVore wrote:
> I recently did a Parameter Initialization on my K3S. I didn’t save the
> current firmware configuration as I’ve never done any custom programming
The setting for the PA module is probably re-set to NOT INSTALLED.
73,
Alan. G4GNX
-- Original Message --
From: "Bill DeVore"
To: elecraft@mailman.qth.net
Sent: 26/07/2020 20:39:51
Subject: [Elecraft] K3S in QRP mode
I recently did a Parameter Initialization on my K3S. I didn’t
I recently did a Parameter Initialization on my K3S. I didn’t save the current
firmware configuration as I’ve never done any custom programming on the radio.
After performing the initialization, a full rotation of the Power knob only
goes from 0 to a maximum of 12 w on any band. Prior to the
Fred,
That would be correct if they are oriented at 180 degrees from each
other so as to cancel the horizontal radiation. Elevated radials must
be tuned to be effective, but only 2 are needed. How much tuning will
depend on the height above ground.
73,
Don W3FPR
On 7/26/2020 2:36 PM,
Hi all,
At the K3s microphone connector the 8V output (pin 6) is specified at 10 mA
max.However a UA78M08CDC voltage regulator - which is directly connected to
+12V - provides the voltage/current to this pin.The UA78M08CDC is specified at
500 mA max.
Is there any reason why a current of approx.
Ground Plane?
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 7/25/2020 8:20 PM, kevinr wrote:
An antenna design is stuck in my head. It consists of three legs,
each 1/4 wavelength long. One leg is vertical while the two radials
are 120 degrees below it. The two radials
Excellent condition Elecraft / Inrad FM filter for K3 / K3s, $110/shipped. Bob
Brown, N1CVX
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Post:
Hi,
I bought a set of these for my oldest set of CM500's and they are very
comfortable. Thanks for the suggestion.
73, Byron N6NUL
On Wed, May 6, 2020 at 11:33 AM Tom Morehouse via Elecraft
wrote:
>
> Here’s my solution:
> Garfield Headphone Softie Earpad Covers (Black, Pair) $17.00
>
>
> from
Cris,
In that case, you have firmware 2.04R which locks the sidetone source at
U8-4.
Is your K2 Serial number below 3000? If so you must do the sidetone
source wiring changes as shown in the KIO2 or KPA100 manual.
If SN3000 or above, you have a problem that needs to be found. Do you
have
So I’m just gonna say this:
He’s Don the Mon (that’s Spanish for ‘man’)!
Thanks,
Mike NJ2OM
> On Jul 26, 2020, at 10:54 AM, Don Wilhelm wrote:
>
> Mike,
>
> That is good news - it sounds like you are back in business with the K2/100.
>
> 73,
> Don W3FPR
>
>> On 7/25/2020 12:19 PM, Mike
hello sorry for the delay,
I didn't have the time, look at the lack of time
stl regler 030, I press on display I have U8-4 but impossible to switch to U8-25
thank you for your opinion
thank you again for your precious help
73 , Cris F8ACF
Le lun. 20 juil. 2020 à 22:56, Don Wilhelm a écrit :
Barry,
The TUNE power is not as tightly controlled by the firmware as normal CW
keying.
That was done as an aid to those using manual antenna tuners. The K2
normally tries to keep the power steady at the requested power.
73,
Don W3FPR
On 7/26/2020 11:21 AM, barry halterman wrote:
Greetings. I just completed my K2 build and the RX works great. Wish I
would have done this years ago. One issue I noticed with the transmitter is
that when I press the tune button, the output power will either be above or
below the power control setting. I found this during the transmitter
Has virtually all options except VHF converters and KBPF3 on aux receiver.
6, 2.7 and 0.5 kHz filters in main RX; 2.7 and 0.5 hHz filters in aux RX.
Went back to Mothership in Jul 2016 for TLC and upgrades.
Please contact me directly with any questions: n...@roadrunner.com
Asking $2500 plus
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