[Elecraft] K3s Notch Filter

[Bernie and Cheryl]

Dear Folks:

I have a question about use of the Notch filter on my K3s.  I am 
primarily a CW operator.  I understand that, in CW mode, the notch 
filter's operation is manual, and you tune (adjust?) the filter using 
the VFO B knob (admittedly, I've not tried it in USB or LSB mode, where 
I understand its operation is automatic, unless you opt out).


I have tried using the filter in CW mode and can detect no effect 
whatsoever while turning the VFO B knob.  I even tried it on the AM 
broadcast band, with the rig in CW mode, and was unable to have any 
effect on the AM carrier.  For what it is worth, the little indicator on 
the LCD display, with the two arrows, does come on when I press the 
Notch filter button.


What am I doing wrong?  Thanks for any help you can give me.

73 de Bernie, KF0QS

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Re: [Elecraft] Ice on dipole under snow under ice

[Fred Jensen]

Around 1958, I was part of the crew that built KPFK on Mt. Wilson in So 
Calif.  Our 10 dB antenna was a stacked ring design, and included a 
two-stage heater than circulated 60 Hz AC to de-ice it.  Icing didn't 
affect the SWR or pattern but it did put mechanical strain on the 
elements.  Mt Wilson is also famous for a large telescope.  I don't know 
how they deiced that. 😁


Incidentally, the KPFK homebrew 10 KW PA comprised 4 4-1000A's in 
parallel.  I don't recommend 4-1000A's at 90.7 MHz, it was pretty squirrely


73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 12/15/2020 12:21 PM, Mike Harris via Elecraft wrote:


It is mentioned in the ARRL Antenna Handbook that a closed loop array 
like a Sterba curtain could be could be fed with a low voltage DC or 
AC current to heat the wire to relieve it of accumulated snow and ice.


Regards,

Mike VP8NO



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Re: [Elecraft] T1 Tuner green/yellow flashing LEDs

[James Bennett via Elecraft]

What I meant to say in the second paragraph is that the yellow light will flash 
if you tap PWR and do nothing else.

> On Dec 15, 2020, at 12:50 PM, James Bennett via Elecraft 
>  wrote:
> 
> Craig - I built one about two months ago and it’s working fine.
> 
> On mine, to go to bypass, I quickly press the PWR button, then the BYP 
> button. Doing so alternates back and forth between bypass and not. After 
> doing that one-two press combo, the yellow will light up for a second or two 
> if you are in bypass and the green will light up if you are in tune/operate. 
> Note that the label set “tap”.
> 
> The yellow will light up if you press PWR and then do nothing within two 
> seconds or so. I believe that it is telling you the last forward power level.
> 
> Does that help?
> 
> Jim / W6JHB
> 
>> On Dec 15, 2020, at 11:42 AM, Craig Vonilten  wrote:
>> 
>> I just finished building my T1 kit.  As with their other gear, top notch
>> instructions and quality.  A very solid design.  Power up and test all
>> appear to be functional, although I've not tuned any radials yet, since I
>> wanted to step through the testing.  Everything appears nominal including
>> the inductor testing.  However, when I tested the bypass (IN/OUT) feature,
>> the green/yellow LEDs rapidly flash (alternating pattern).  Pressing (and
>> holding) the BYP button will hold one or the other LEDs, with the pattern
>> starting as soon as the button is released.  No other button combination
>> seems to stop or correct this condition.  I expected to be able to press BYP
>> to select IN or OUT and have a steady green or steady yellow (indicating the
>> bypass condition).  I have to remove the battery to reset the tuner and
>> recover from this flashing LED condition.  As stated, I have not tuned a
>> load yet.  Is this normal?
>> 
>> 
>> 
>> Craig
>> 
>> N6CAV
>> 
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[Elecraft] Elecraft CS60 Travel Bag for KX2

[Doug Eaton via Elecraft]

For Sale:  CS60 Large Travel Bag for KX2. New and unused.Will hold KX2 and 
spare battery as well as antenna and radials.Lots of extra space for other 
accessories. Well padded toprotect the KX2 and accessories. $25.00 plus 
shipping.
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Re: [Elecraft] T1 Tuner green/yellow flashing LEDs

[James Bennett via Elecraft]

Craig - I built one about two months ago and it’s working fine.

On mine, to go to bypass, I quickly press the PWR button, then the BYP button. 
Doing so alternates back and forth between bypass and not. After doing that 
one-two press combo, the yellow will light up for a second or two if you are in 
bypass and the green will light up if you are in tune/operate. Note that the 
label set “tap”.

The yellow will light up if you press PWR and then do nothing within two 
seconds or so. I believe that it is telling you the last forward power level.

Does that help?

Jim / W6JHB

> On Dec 15, 2020, at 11:42 AM, Craig Vonilten  wrote:
> 
> I just finished building my T1 kit.  As with their other gear, top notch
> instructions and quality.  A very solid design.  Power up and test all
> appear to be functional, although I've not tuned any radials yet, since I
> wanted to step through the testing.  Everything appears nominal including
> the inductor testing.  However, when I tested the bypass (IN/OUT) feature,
> the green/yellow LEDs rapidly flash (alternating pattern).  Pressing (and
> holding) the BYP button will hold one or the other LEDs, with the pattern
> starting as soon as the button is released.  No other button combination
> seems to stop or correct this condition.  I expected to be able to press BYP
> to select IN or OUT and have a steady green or steady yellow (indicating the
> bypass condition).  I have to remove the battery to reset the tuner and
> recover from this flashing LED condition.  As stated, I have not tuned a
> load yet.  Is this normal?
> 
> 
> 
> Craig
> 
> N6CAV
> 
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[Elecraft] Elecraft KXPD2 Keyer Paddle For Sale

[Doug Eaton via Elecraft]

For Sale: KXPD2 Keyer Paddle for KX2 or KX3 transceivers.Used and in very good 
condition.  Attaches to the front ofeither transceiver with included captive 
screws.$75.00 shipped to lower 48 states. 
n...@yahoo.com
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[Elecraft] KX1 30/80 M Adapter For Sale

[Doug Eaton via Elecraft]

For Sale: New In Box KXB3080 30/80 Meter Adapter for the KX1.Never installed. 
Includes installation instructions. In original box.$79.00 shipped to lower 48.
n...@yahoo.com
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Re: [Elecraft] Ice on dipole under snow under ice

[donovanf]

Hi Mike, 


While its true that snow and ice are transparent to HF, its also true that 
they affect antenna performance by dielectric loading of the antenna 
elements. In most cases it affects mainly the feed point impedance, 
but in extreme cases it can also affect the directivity of a directive antenna. 


73 
Frank 
W3LPL 

- Original Message -

From: "Mike Harris via Elecraft"  
To: elecraft@mailman.qth.net 
Sent: Tuesday, December 15, 2020 8:21:03 PM 
Subject: Re: [Elecraft] Ice on dipole under snow under ice 

Snow and ice is transparent to HF. When I was in Antarctica we had an 
ice depth radar sounding programme. A DH Twin Otter would fly at 50 feet 
above the snow surface as indicated by the radar altimeter and beneath 
the wings were a couple of 70Mhz dipoles, TX and RX. The 70MHz TX pulses 
penetrated to the underlying rock. Take one height from the other, ice 
depth. 

Fantastic flying that was. 

It is mentioned in the ARRL Antenna Handbook that a closed loop array 
like a Sterba curtain could be could be fed with a low voltage DC or AC 
current to heat the wire to relieve it of accumulated snow and ice. 

Regards, 

Mike VP8NO 

On 15/12/2020 14:45, David Haines wrote: 
> Update: 
> 
> With one-quarter of one leg of the dipole still under ice, I got a 
> reception report from PSKReporter on FT8 with 2 watts to Italy. That 
> shouldn't work, should it? Maybe the ice doesn't matter? 
> 
> KD5VXH recalled a discussion in QST on this very subject, where 400W AM 
> melted the ice on one leg of the dipole (fed by coax), but not the other. 
> ' 
> You can follow the controversy in May and July 1960 letters in QST! 
> 
> david 
> KC1DNY 
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[Elecraft] KPA-500 and KAT-500 For Sale

[Doug Eaton via Elecraft]

For Sale: KPA-500-K serial #29XX in excellent condition.original owner and 
non-smoking home.Amp is in good working condition. No scratches, scuffs or 
other cosmetic flaws.$1695 plus shipping and insurance.
Also For Sale: KAT-500-F antenna tuner serial #19XX.In excellent condition 
cosmetically and electrically.$475.00 shipped to lower 48 states.Extra cost for 
shipping to other areas.
n...@yahoo.com
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Re: [Elecraft] Ice on dipole under snow under ice

[Mike Harris via Elecraft]

Snow and ice is transparent to HF. When I was in Antarctica we had an 
ice depth radar sounding programme. A DH Twin Otter would fly at 50 feet 
above the snow surface as indicated by the radar altimeter and beneath 
the wings were a couple of 70Mhz dipoles, TX and RX. The 70MHz TX pulses 
penetrated to the underlying rock. Take one height from the other, ice 
depth.


Fantastic flying that was.

It is mentioned in the ARRL Antenna Handbook that a closed loop array 
like a Sterba curtain could be could be fed with a low voltage DC or AC 
current to heat the wire to relieve it of accumulated snow and ice.


Regards,

Mike VP8NO

On 15/12/2020 14:45, David Haines wrote:

Update:

With one-quarter of one leg of the dipole still under ice, I got a 
reception report from PSKReporter on FT8 with 2 watts to Italy. That 
shouldn't work, should it?  Maybe the ice doesn't matter?


KD5VXH recalled a discussion in QST on this very subject, where 400W AM 
melted the ice on one leg of the dipole (fed by coax), but not the other.

'
You can follow the controversy in May and July 1960 letters in QST!

david
KC1DNY

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[Elecraft] T1 Tuner green/yellow flashing LEDs

[Craig Vonilten]

I just finished building my T1 kit.  As with their other gear, top notch
instructions and quality.  A very solid design.  Power up and test all
appear to be functional, although I've not tuned any radials yet, since I
wanted to step through the testing.  Everything appears nominal including
the inductor testing.  However, when I tested the bypass (IN/OUT) feature,
the green/yellow LEDs rapidly flash (alternating pattern).  Pressing (and
holding) the BYP button will hold one or the other LEDs, with the pattern
starting as soon as the button is released.  No other button combination
seems to stop or correct this condition.  I expected to be able to press BYP
to select IN or OUT and have a steady green or steady yellow (indicating the
bypass condition).  I have to remove the battery to reset the tuner and
recover from this flashing LED condition.  As stated, I have not tuned a
load yet.  Is this normal?

 

Craig

N6CAV

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Re: [Elecraft] Ice on dipole under snow under ice

[Fred Jensen]

Snow and/or natural ice that fell from the sky is barely conductive if 
at all and likely has zero effect.  All or part of your antenna laying 
on the ground will sure lower it's radiating efficiency [although maybe 
not as much as you might think], but HF radio is sometimes magic.  Like 
quantum mechanics, it's all probabilities.  Instead of "shouldn't work," 
ask "what's the probability that it will work?" 😁


73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 12/15/2020 9:45 AM, David Haines wrote:

Update:

With one-quarter of one leg of the dipole still under ice, I got a 
reception report from PSKReporter on FT8 with 2 watts to Italy. That 
shouldn't work, should it?  Maybe the ice doesn't matter?


KD5VXH recalled a discussion in QST on this very subject, where 400W 
AM melted the ice on one leg of the dipole (fed by coax), but not the 
other.

'
You can follow the controversy in May and July 1960 letters in QST!

david
KC1DNY



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Re: [Elecraft] My K3's 10 meter band is dead

[Don Wilhelm]

John,

Is there any chance that you tuned the VFO from another band (maybe 12 
meters) into the 10 meter band?  Try a Direct Frequency Entry into the 
10 meter band and see if it comes back.


73,
Don W3FPR

On 12/15/2020 1:35 PM, John Kountz wrote:

Gentlemen,
There seems to have been ambiguity in my note concerning the operational 
condition of my K3 (#3271).  Clarifying the issue:
For 10 meters my K3 neither transmits nor receives.  All other bands are fully 
functional.

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Re: [Elecraft] My K3's 10 meter band is dead

[Wes]

Is the display dead?  If not when you tune does the frequency reading change?  
If you transmit does the red panel light come on?


We need more info than it doesn't work.

Wes  N7WS


On 12/15/2020 11:35 AM, John Kountz wrote:

Gentlemen,
There seems to have been ambiguity in my note concerning the operational 
condition of my K3 (#3271).  Clarifying the issue:
For 10 meters my K3 neither transmits nor receives.  All other bands are fully 
functional.
Any serious suggestions?.
73,
John Kountz WO1S



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Re: [Elecraft] K4 Panadapter Notch Display

[K4HYJ via Elecraft]

That is a great idea!

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Wayne Burdick
Sent: Tuesday, December 15, 2020 1:35 PM
To: AL7CR 
Cc: Elecraft Reflector 
Subject: Re: [Elecraft] K4 Panadapter Notch Display

Certainly a good idea, added to the list for consideration.

Thanks,
Wayne


> On Dec 15, 2020, at 10:31 AM, AL7CR  wrote:
> 
> Will the K4 panadapter be able to show the position of the manual notch?
It could be displayed as a different color background similar to how the
receive filter is shown on the P3.  It would be a very useful feature.
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Re: [Elecraft] K4 Panadapter Notch Display

[Wayne Burdick]

Certainly a good idea, added to the list for consideration.

Thanks,
Wayne


> On Dec 15, 2020, at 10:31 AM, AL7CR  wrote:
> 
> Will the K4 panadapter be able to show the position of the manual notch?  It 
> could be displayed as a different color background similar to how the receive 
> filter is shown on the P3.  It would be a very useful feature.
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[Elecraft] My K3's 10 meter band is dead

[John Kountz]

Gentlemen,
There seems to have been ambiguity in my note concerning the operational 
condition of my K3 (#3271).  Clarifying the issue:
For 10 meters my K3 neither transmits nor receives.  All other bands are fully 
functional.
Any serious suggestions?.
73,
John Kountz WO1S

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Re: [Elecraft] Ice on dipole under snow under ice

[Ray]

Your Trying to figure out Propagation ? 

GoodLuck   WA6VAB 

From: David Haines
Sent: Tuesday, December 15, 2020 9:47 AM
To: Louandzip; elecraft@mailman.qth.net
Subject: Re: [Elecraft] Ice on dipole under snow under ice

Update:

With one-quarter of one leg of the dipole still under ice, I got a 
reception report from PSKReporter on FT8 with 2 watts to Italy. That 
shouldn't work, should it?  Maybe the ice doesn't matter?

KD5VXH recalled a discussion in QST on this very subject, where 400W AM 
melted the ice on one leg of the dipole (fed by coax), but not the other.
'
You can follow the controversy in May and July 1960 letters in QST!

david
KC1DNY

On 12/13/2020 4:36 PM, Louandzip wrote:
> I haven't given this a lot of thought but:
>
> 1. Virtually none.  100W most radiated, leaving very little heating 
> the ice/snow along your long cold wire. The wire itself won't heat up 
> as it has very low resistance.
>
> 2. IDK about the KXPA100, but Tune is often done at low power, so if 
> 100W work, Tune certainly won't.
>
> 3.  Need to check the SWR, but even if good initially, may vary a lot 
> as ice/snow situation changes. This might test the SWR capability of 
> the tuner and protection of the amp, which is best left untested.
>
> If you do try it, keep it legal: Check the freq before transmitting, 
> and be sure to identify.  Let us know how it goes. This might be the 
> excuse you've needed to get that legal limit amp you've been wanting.
>
> Lou W7HV
>
>
> On Sunday, December 13, 2020, 11:40:18 AM MST, David Haines 
>  wrote:
>
>
> Before I try something crazy, like climbing up on the roof ... .
>
> We had an ice storm.  The ice pulled my wire dipole down to the roof,
> but didn't break it because one mask was Schedule 30, which leaned over
> nicely.  It then snowed on top of the ice.
>
> I've been able to free the feedline (ladderline) and most of the dipole,
> but part of the dipole is till under the snow under a layer of ice way
> up on the roof.
>
> I'm thinking of running 100W from my KXPA100 to melt it out of there,
> but before I try:
>
> 1.  Is there any chance of this working?
> 2.  Should I just transmit a TUNE through it?
> 3.  Can I damage the KXPA100 or tuner?
>
> Right now the coax is not connected to the KX3 and I haven't tried to
> receive.
>
> david
> KC1DNY
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[Elecraft] K4 Panadapter Notch Display

[AL7CR]

Will the K4 panadapter be able to show the position of the manual notch?  It 
could be displayed as a different color background similar to how the receive 
filter is shown on the P3.  It would be a very useful feature.
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Re: [Elecraft] KX3 - SSB Reception

[NW0M]

Doug,

I don't have my KX3 connected but I'm pretty sure it works the same as the
K3 and that is that the MON levels are separate for SSB and CW Sidetone.  So
make sure you are in SSB mode and Hold the MON button to advance the gain
higher than 0.  Give that a try.

73, Mitch
NWØM



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Re: [Elecraft] Ice on dipole under snow under ice

[David Haines]

Update:

With one-quarter of one leg of the dipole still under ice, I got a 
reception report from PSKReporter on FT8 with 2 watts to Italy. That 
shouldn't work, should it?  Maybe the ice doesn't matter?


KD5VXH recalled a discussion in QST on this very subject, where 400W AM 
melted the ice on one leg of the dipole (fed by coax), but not the other.

'
You can follow the controversy in May and July 1960 letters in QST!

david
KC1DNY

On 12/13/2020 4:36 PM, Louandzip wrote:

I haven't given this a lot of thought but:

1. Virtually none.  100W most radiated, leaving very little heating 
the ice/snow along your long cold wire. The wire itself won't heat up 
as it has very low resistance.


2. IDK about the KXPA100, but Tune is often done at low power, so if 
100W work, Tune certainly won't.


3.  Need to check the SWR, but even if good initially, may vary a lot 
as ice/snow situation changes. This might test the SWR capability of 
the tuner and protection of the amp, which is best left untested.


If you do try it, keep it legal: Check the freq before transmitting, 
and be sure to identify.  Let us know how it goes. This might be the 
excuse you've needed to get that legal limit amp you've been wanting.


Lou W7HV


On Sunday, December 13, 2020, 11:40:18 AM MST, David Haines 
 wrote:



Before I try something crazy, like climbing up on the roof ... .

We had an ice storm.  The ice pulled my wire dipole down to the roof,
but didn't break it because one mask was Schedule 30, which leaned over
nicely.  It then snowed on top of the ice.

I've been able to free the feedline (ladderline) and most of the dipole,
but part of the dipole is till under the snow under a layer of ice way
up on the roof.

I'm thinking of running 100W from my KXPA100 to melt it out of there,
but before I try:

1.  Is there any chance of this working?
2.  Should I just transmit a TUNE through it?
3.  Can I damage the KXPA100 or tuner?

Right now the coax is not connected to the KX3 and I haven't tried to
receive.

david
KC1DNY
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Re: [Elecraft] KX3 - SSB Reception

[Ronnie Hull]

I HAVE to use headphones on my KX3 as the speaker sounds like crap!
W5SUM

Sent from my iPhone

> On Dec 15, 2020, at 11:13 AM, Doug Plunkett  wrote:
> 
> I’m not confident I have a problem as my KX3 operates fine but it seems 
> something has changed. I’m using headphones. I receive other ham’s 
> transmissions, both SSB and CW, fine through the headphones. On CW I hear MY 
> transmissions through the headset, but on SSB I do not hear MY transmissions 
> through the headset. Adjustment of the “MON” knob control does adjust the 
> volume on CW through the headset (nothing on SSB since I don’t hear it via 
> the headset). Is this normal behavior - not receiving my SSB transmissions 
> through the headset - or is there a setting/control I have not able to locate?
> 
> Sent from my iPad
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[Elecraft] KX3 - SSB Reception

[Doug Plunkett]

I’m not confident I have a problem as my KX3 operates fine but it seems 
something has changed. I’m using headphones. I receive other ham’s 
transmissions, both SSB and CW, fine through the headphones. On CW I hear MY 
transmissions through the headset, but on SSB I do not hear MY transmissions 
through the headset. Adjustment of the “MON” knob control does adjust the 
volume on CW through the headset (nothing on SSB since I don’t hear it via the 
headset). Is this normal behavior - not receiving my SSB transmissions through 
the headset - or is there a setting/control I have not able to locate?

Sent from my iPad
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