Re: [Elecraft] AX1 Loaded Whip Antenna - Elevation and Counterpoise?

2019-08-05 Thread J Chester
Yes, David,
Probably early September
Joe

> On 6 Aug 2019, at 00:03, David Thompson  wrote:
> 
> Joe…
> 
> Will you have reprints available? I would like to see a copy of the article.
> 
> Thanks!
> 
> David Thompson, AG7TX
> Jack of All Trades
> Master of None
> dbthomp...@me.com
> 
> 
> 
> 
>> On Aug 5, 2019, at 02:21, J Chester  wrote:
>> 
>> Bret,
>> 
>> I’ve just submitted a review of the AX1 to Practical Wireless magazine, 
>> which should appear be in the October issue, published end of September.
>> 
>> I found it worked well on the tripod. The key to getting the most out of it 
>> is to let the counterpoise wire fall to the ground about 3 ft or so from the 
>> radiator. As a very short base loaded antenna, I don’t think an extra foot 
>> or so of height will make a lot of difference. Your extra counterpoise wires 
>> is probably the best thing to do. More details in the article
>> 
>> 73 de Joe MW1MWD
>> 
>> 
>>> On 4 Aug 2019, at 18:20, MaverickNH  wrote:
>>> 
>>> I've got my little 20m AX1 and 3 tuned counterpoise wires on a 4ft tripod
>>> with wires extending to plastic chairs 3ft off the ground too. If I got that
>>> whip up to 2m above ground with sloping wires, would I gain much?
>>> 
>>> Bret/N4SRN
>>> 
>>> 
>>> 
>>> --
>>> Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] K3 Amplifier Drive Inconsistency

2019-08-05 Thread Jim Brown

On 8/5/2019 6:23 PM, Jim Rhodes wrote:

I
am currently portable for work (in North Dakota) and am using a mobile
antenna clamped to the top of a 6 ft tall wooden fence.


That mobile whip is only half of an antenna. When used on a vehicle, the 
metallic parts of the vehicle provide the other half, a path for return 
current, which is called a counterpoise. If you provide no counterpoise, 
return current will flow on the outside of the coax down into your shack.


The solution to your problem is to 1) provide that counterpoise, 
possibly in the form of one or more resonant radials (more is better); 
AND 2) put a proper ferrite choke at the antenna feedpoint so that the 
coax doesn't carry return current. See http://k9yc.com/2018Cookbook.pdf 
for detailed advice on chokes.


73, Jim K9YC

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Re: [Elecraft] K3 Amplifier Drive Inconsistency

2019-08-05 Thread Jim Rhodes
Thanks for the suggestion. The antenna is less than 25 feet from the rig.
The RF getting into the audio could be coming from the coax or the antenna,
no way to say which. There is 5-6 turns of coax, 6 inches in diameter, a
couple of feet from the rig where it comes into the apartment.  Beads on
the coax might do the trick, but I am not near my parts boxes, they are
about a 12 hour each way drive away. And I am in very rural North Dakota,
would have to order something mail order and wait till pony express gets it
here. So I will stick with what works. I am in a tiny apartment with just a
little patch of weeds with a little grass on it and can't get the antenna
any further away. I had the same problem when I tried a short dipole with a
fair balun (elecraft of course) at the feed point. And, as I said, I now
have zero problems. Well, other than a crappy antenna setup.

On Mon, Aug 5, 2019 at 8:45 PM Don Wilhelm  wrote:

> Jim,
>
> That sounds like RF getting into the audio.  Try moving the ferrites to
> the antenna feedpoint to choke off the RF on the coax shield.  Yes, the
> coax from a vertical needs a current choke.  In fact, you may need a 2nd
> choke at the shack entry point as well.  The coax will try to be an
> additional radial and that means it will have RF current on it - if not
> from the antenna itself, the radiation from the radiator may couple with
> the coax shield and cause RF on the shield (that is why the additional
> choke at the shack entry).
>
> The KX3 has one characteristic that may cause confusion.  If the signal
> to the mic input is too large, the KX3 will shut down the audio gain
> giving the impression that there is not enough audio when in fact there
> is too much signal at the input.
>
> 73,
> Don W3FPR
>
>
> On 8/5/2019 9:23 PM, Jim Rhodes wrote:
> > Last night I noticed I had little to no output from my KX3/KXPA100 combo
> > especially on 40. I did a little experimenting and discovered that 3
> turns
> > of the transmit audio line through an unknown mix clamp on ferrite fixed
> > the problem. Without it I was mildly affected on 20 and not at all on 15.
> > With that choke in place I was stable on 40 and all other bands I tried.
> I
> > am currently portable for work (in North Dakota) and am using a mobile
> > antenna clamped to the top of a 6 ft tall wooden fence. Without the choke
> > the ALC would go up when keyed, then drop off to near nothing. I know
> AFSK
> > is becoming a more preferred method of generating RTTY, but I have never
> > had this issue with FSK. So I learned a lesson about the little USB
> > soundcard I use for portable ops.
>
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Re: [Elecraft] K3 Amplifier Drive Inconsistency

2019-08-05 Thread Don Wilhelm

Jim,

That sounds like RF getting into the audio.  Try moving the ferrites to 
the antenna feedpoint to choke off the RF on the coax shield.  Yes, the 
coax from a vertical needs a current choke.  In fact, you may need a 2nd 
choke at the shack entry point as well.  The coax will try to be an 
additional radial and that means it will have RF current on it - if not 
from the antenna itself, the radiation from the radiator may couple with 
the coax shield and cause RF on the shield (that is why the additional 
choke at the shack entry).


The KX3 has one characteristic that may cause confusion.  If the signal 
to the mic input is too large, the KX3 will shut down the audio gain 
giving the impression that there is not enough audio when in fact there 
is too much signal at the input.


73,
Don W3FPR


On 8/5/2019 9:23 PM, Jim Rhodes wrote:

Last night I noticed I had little to no output from my KX3/KXPA100 combo
especially on 40. I did a little experimenting and discovered that 3 turns
of the transmit audio line through an unknown mix clamp on ferrite fixed
the problem. Without it I was mildly affected on 20 and not at all on 15.
With that choke in place I was stable on 40 and all other bands I tried. I
am currently portable for work (in North Dakota) and am using a mobile
antenna clamped to the top of a 6 ft tall wooden fence. Without the choke
the ALC would go up when keyed, then drop off to near nothing. I know AFSK
is becoming a more preferred method of generating RTTY, but I have never
had this issue with FSK. So I learned a lesson about the little USB
soundcard I use for portable ops.

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Re: [Elecraft] K3 Amplifier Drive Inconsistency

2019-08-05 Thread Jim Rhodes
Last night I noticed I had little to no output from my KX3/KXPA100 combo
especially on 40. I did a little experimenting and discovered that 3 turns
of the transmit audio line through an unknown mix clamp on ferrite fixed
the problem. Without it I was mildly affected on 20 and not at all on 15.
With that choke in place I was stable on 40 and all other bands I tried. I
am currently portable for work (in North Dakota) and am using a mobile
antenna clamped to the top of a 6 ft tall wooden fence. Without the choke
the ALC would go up when keyed, then drop off to near nothing. I know AFSK
is becoming a more preferred method of generating RTTY, but I have never
had this issue with FSK. So I learned a lesson about the little USB
soundcard I use for portable ops.

On Mon, Aug 5, 2019 at 6:34 PM  wrote:

> Hi Bill,
>
>
> I've never experienced your reported amplifier drive problem with
> my K3 s/n #6100 driving 20 watts into my Lunar Link LA-62
> 1500 watt output 6 meter amplifier. Perhaps it unique to the
> K3 - KPA1500 combination.
>
>
> 73
> Frank
> W3LPL
>
> - Original Message -
>
> From: "Bill Schwantes" 
> To: elecraft@mailman.qth.net
> Sent: Monday, August 5, 2019 11:24:54 PM
> Subject: [Elecraft] K3 Amplifier Drive Inconsistency
>
> I need help solving an amplifier drive inconsistency problem when I
> operate
> using digital modes on 50 MHz. I noticed during a recent contest that the
> K3 will sometimes key the amplifier but provide zero drive. I'm using K3
> SN
> 669 on 50 MHz FT8, FT4 and MSK 144 and driving a KPA1500 to about 750
> watts.
>
> After several consecutive transmissions I notice that the amplifier
> responds briefly to being keyed but the power drops to zero. It's keyed up
> but has no output. The K3's output (drive) is set at 17 watts but there is
> no output on the RF meter when this happens. The K3's red TX indicator is
> on. This problem also occurs when driving a KPA500, though less often
>
> I can correct this problem temporarily by switching the amplifier to
> standby, which allows the K3 to change to "barefoot" output then switch
> the amplifier back to "operate" which changes drive power back to it's
> preset level. That's usually good for a dozen or so transmit cycles before
> the problem reappears.
>
> This problem does not occur when driving other amplifiers; nor does it
> occur when using CW or SSB modes. It seems to have something to do with
> the
> K3/KPA1500 command interface controlling the output power of the K3.
>
> Any ideas?
>
> 73 Bill W7QQ
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Re: [Elecraft] Question about K4HD Xtal filters

2019-08-05 Thread W0FK
Heres the thread:

http://elecraft.365791.n2.nabble.com/K4HD-filter-physical-format-td7652442.html#a7652506

Up to 3 filters per receiver.

73

Lou, W0FK



-
St. Louis, MO

"The difference between stupidity and genius is that 
genius has its limits." Albert Einstein


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[Elecraft] KDVR3 - Some Website Confusion

2019-08-05 Thread Ed G
Folks,
 When I go to the Elecraft site and search on KDVR3, I see the digital 
recorder board come up for $169.  If I search on E850246 (which is the DVR 
board assy number), I am shown a K3DVR PCB for $365. If this is not a mistake, 
what’s the difference between these two boards?
--Ed—





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Re: [Elecraft] K2 - Lost 40m Tx after install of K60XV option

2019-08-05 Thread Neil Zampella

Don,

I don't see 60M working either.    I'll check these tomorrow after work.

Neil

On 8/5/2019 2:20 PM, Don Wilhelm wrote:

Neil,

Does 60 meters work, but not 40 meters?

The only things that could 40 meters to fail after installing the
K60XV are:

1) C6 is not the correct 4.7 pF value - it will be marked either 4.7
or 479.

2) Relay K1 not working properly, check the orientation and soldering.
3) P2 and/or RF J15 not installed properly.

73,
Don W3FPR

On 8/5/2019 11:14 AM, Neil Zampella wrote:

Hi all,

need some advice.   I have a K2, and it was working fine.   Then I put
together the K60XV option and installed it.   Messed something up as 40M
Tx went away.    The rig switches to Tx, but I do not see any power
coming out of the system.





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Re: [Elecraft] K3 Amplifier Drive Inconsistency

2019-08-05 Thread donovanf
Hi Bill, 


I've never experienced your reported amplifier drive problem with 
my K3 s/n #6100 driving 20 watts into my Lunar Link LA-62 
1500 watt output 6 meter amplifier. Perhaps it unique to the 
K3 - KPA1500 combination. 


73 
Frank 
W3LPL 

- Original Message -

From: "Bill Schwantes"  
To: elecraft@mailman.qth.net 
Sent: Monday, August 5, 2019 11:24:54 PM 
Subject: [Elecraft] K3 Amplifier Drive Inconsistency 

I need help solving an amplifier drive inconsistency problem when I operate 
using digital modes on 50 MHz. I noticed during a recent contest that the 
K3 will sometimes key the amplifier but provide zero drive. I'm using K3 SN 
669 on 50 MHz FT8, FT4 and MSK 144 and driving a KPA1500 to about 750 watts. 

After several consecutive transmissions I notice that the amplifier 
responds briefly to being keyed but the power drops to zero. It's keyed up 
but has no output. The K3's output (drive) is set at 17 watts but there is 
no output on the RF meter when this happens. The K3's red TX indicator is 
on. This problem also occurs when driving a KPA500, though less often 

I can correct this problem temporarily by switching the amplifier to 
standby, which allows the K3 to change to "barefoot" output then switch 
the amplifier back to "operate" which changes drive power back to it's 
preset level. That's usually good for a dozen or so transmit cycles before 
the problem reappears. 

This problem does not occur when driving other amplifiers; nor does it 
occur when using CW or SSB modes. It seems to have something to do with the 
K3/KPA1500 command interface controlling the output power of the K3. 

Any ideas? 

73 Bill W7QQ 
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[Elecraft] K3 Amplifier Drive Inconsistency

2019-08-05 Thread Bill Schwantes
I need help solving an amplifier drive inconsistency problem when I operate
using digital modes on 50 MHz.  I noticed during a recent contest that the
K3 will sometimes key the amplifier but provide zero drive. I'm using K3 SN
669 on 50 MHz FT8, FT4 and MSK 144 and driving a KPA1500 to about 750 watts.

After several consecutive transmissions I notice that the amplifier
responds briefly to being keyed but the power drops to zero. It's keyed up
but has no output.  The K3's output (drive) is set at 17 watts but there is
no output on the RF meter when this happens. The K3's red TX indicator is
on. This problem also occurs when driving a KPA500, though less often

I can correct this problem temporarily by switching the amplifier to
standby, which allows the K3 to  change to "barefoot" output then switch
the amplifier back to "operate" which changes drive power back to it's
preset level.  That's usually good for a dozen or so transmit cycles before
the problem reappears.

This problem does not occur when driving other amplifiers; nor does it
occur when using CW or SSB modes. It seems to have something to do with the
K3/KPA1500 command interface controlling the output power of the K3.

Any ideas?

73 Bill W7QQ
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Re: [Elecraft] AX1 Loaded Whip Antenna - Elevation and Counterpoise?

2019-08-05 Thread David Thompson via Elecraft
Joe…

Will you have reprints available? I would like to see a copy of the article.

Thanks!

David Thompson, AG7TX
Jack of All Trades
Master of None
dbthomp...@me.com




> On Aug 5, 2019, at 02:21, J Chester  wrote:
> 
> Bret,
> 
> I’ve just submitted a review of the AX1 to Practical Wireless magazine, which 
> should appear be in the October issue, published end of September.
> 
> I found it worked well on the tripod. The key to getting the most out of it 
> is to let the counterpoise wire fall to the ground about 3 ft or so from the 
> radiator. As a very short base loaded antenna, I don’t think an extra foot or 
> so of height will make a lot of difference. Your extra counterpoise wires is 
> probably the best thing to do. More details in the article
> 
> 73 de Joe MW1MWD
> 
> 
>> On 4 Aug 2019, at 18:20, MaverickNH  wrote:
>> 
>> I've got my little 20m AX1 and 3 tuned counterpoise wires on a 4ft tripod
>> with wires extending to plastic chairs 3ft off the ground too. If I got that
>> whip up to 2m above ground with sloping wires, would I gain much?
>> 
>> Bret/N4SRN
>> 
>> 
>> 
>> --
>> Sent from: http://elecraft.365791.n2.nabble.com/
>> __
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Re: [Elecraft] KPA500 no output

2019-08-05 Thread Lyn Norstad
Don -

I have nearly the same exact problem with a KPA500 that is only 2 weeks old.  
It lets the signal pass thru on Standby, even showing proper signal levels.  
But in Operate mode, it's unresponsive and the SWR skyrockets to 99:1.

I ran tests suggested by Support, but no joy.  I will be shipping it back to 
Elecraft tomorrow.

Coincidentally, the "front end" of my 2 y/o IC7300 died at the same time, 
yielding zero receive (everything else is fine).

Lyn, WØLEN





-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of donw4cbs
Sent: Monday, August 05, 2019 4:35 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] KPA500 no output

This is an update for the group re. my KPA500.Several weeks ago I reported that 
all of a sudden my KPA500 dropped to 0 watts out when fed with my K3. SWR was 
1:1. When the amp was placed in bypass my K3 showed normal output. When placed 
in operate SWR showed 99:1 and K3 dropped to 0 watts out.After speaking with 
tech support I obtained a RSA and sent in back for repair.Elecraft reported 
problems with the TR circuit and performed the following:Updated the TR circuit 
and rebiased PA module to 0.8 AThey replaced C9 for QSK upgrade in the I/O 
ModuleReplaced C20, R35 and R31 for QSK upgrade in the Front Panel 
ModuleReplaced Q5, D7, R3, R9, and R24 for transmit/receive MOD in the Low Pass 
Filter and replaced C43 and C44 in the 12 meter low pass filter.After 8 hours 
of burn in and thorough testing, Elecraft returned the KPA500 back to me and 
only charged for one hour of labor and return shipping. Wow!!!Am I a happy 
camper/customer... you bet. When Ten Tec disappeared for awhile I reluctantly 
switched to Elecraft, but have never looked back. What a wonderful company with 
outstanding customer support. I look forward to adding a K4 within the next 
year...Don, W4CBSSent from my Sprint Samsung Galaxy Note9.
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[Elecraft] KPA500 no output

2019-08-05 Thread donw4cbs
This is an update for the group re. my KPA500.Several weeks ago I reported that 
all of a sudden my KPA500 dropped to 0 watts out when fed with my K3. SWR was 
1:1. When the amp was placed in bypass my K3 showed normal output. When placed 
in operate SWR showed 99:1 and K3 dropped to 0 watts out.After speaking with 
tech support I obtained a RSA and sent in back for repair.Elecraft reported 
problems with the TR circuit and performed the following:Updated the TR circuit 
and rebiased PA module to 0.8 AThey replaced C9 for QSK upgrade in the I/O 
ModuleReplaced C20, R35 and R31 for QSK upgrade in the Front Panel 
ModuleReplaced Q5, D7, R3, R9, and R24 for transmit/receive MOD in the Low Pass 
Filter and replaced C43 and C44 in the 12 meter low pass filter.After 8 hours 
of burn in and thorough testing, Elecraft returned the KPA500 back to me and 
only charged for one hour of labor and return shipping. Wow!!!Am I a happy 
camper/customer... you bet. When Ten Tec disappeared for awhile I reluctantly 
switched to Elecraft, but have never looked back. What a wonderful company with 
outstanding customer support. I look forward to adding a K4 within the next 
year...Don, W4CBSSent from my Sprint Samsung Galaxy Note9.
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[Elecraft] FS: K3(s*) 100W + P3 combo

2019-08-05 Thread Pete Meier via Elecraft
K3 and P3 are both in excellent cosmetic and working condition with low usage 
hours. Non-smoker environment.
All Manuals, documentation and cables included. I am second owner. Purchased K3 
unit in late 2015.
Upgraded with P3, KAT3/P3-K, KPA3A, KXV3A, KBPF3, 2.7 kHz and 500 Hz Filters in 
late 2015.
Upgraded with (K3s*) KSYN3AUPG Upgrade Kit in early 2017.

K3 160-6 Meter Transceiver with K3(s*) Synthesizer KSYN3A
P3 High Performance Panadapter
KPA3A 100-Watt Amplifier
KAT3A 100-Watt Automatic Antenna Tuner
KXV3A Interface Option
KBPF3 General Coverage Receive Option
2.7 kHz Filter
500 Hz Filter

Price  $2295   buyer pays shipping and insurance.
Please reply off list.

Pete
pmeier at me dot com
Amateur Radio Callsign: WK8S
|| I never lose. If I don't win, I learn. - unknown author ||

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Re: [Elecraft] K2 - Lost 40m Tx after install of K60XV option

2019-08-05 Thread Don Wilhelm

Neil,

Does 60 meters work, but not 40 meters?

The only things that could 40 meters to fail after installing the K60XV are:

1) C6 is not the correct 4.7 pF value - it will be marked either 4.7 or 479.

2) Relay K1 not working properly, check the orientation and soldering.
3) P2 and/or RF J15 not installed properly.

73,
Don W3FPR

On 8/5/2019 11:14 AM, Neil Zampella wrote:

Hi all,

need some advice.   I have a K2, and it was working fine.   Then I put
together the K60XV option and installed it.   Messed something up as 40M
Tx went away.    The rig switches to Tx, but I do not see any power
coming out of the system.


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[Elecraft] K2 - Lost 40m Tx after install of K60XV option

2019-08-05 Thread Neil Zampella

Hi all,

need some advice.   I have a K2, and it was working fine.   Then I put
together the K60XV option and installed it.   Messed something up as 40M
Tx went away.    The rig switches to Tx, but I do not see any power
coming out of the system.

Any suggestions on what I messed up :(

Thanks,

Neil, KN3ILZ


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Re: [Elecraft] Serial port problems

2019-08-05 Thread Buck
Many USB>Serial cables contain counterfeit chips.  The legitimate makers 
fought back by installing driver instructions that disable the 
counterfeit.  Maybe your update finally caught up.  The Elecraft cables 
are legitimate.  Don't buy cheap knock-offs from the Internet.


k4ia, Buck
K3# 101
Honor Roll  8B DXCC
EasyWayHamBooks.com

On 8/5/2019 9:49 AM, Gary Tuck via Elecraft wrote:

The culprit was the serial/USB cable.  Got a new one from Elecraft and all is 
well.

Thank you all.

73,
Gary W7TEA



On Jul 16, 2019, at 1:17 PM, Gary Tuck  wrote:

For the first time I am having difficulties communicating with my K3/P3.  The 
only thing which has changed is an upgrade to the Mac OS.  Now running 10.14.5 
Mohave.  I reinstalled the FTD driver for the serial cable, tried both my iMac 
and MacBook and neither finds the P3 responding. I have not been on the air for 
several months so I am not sure when the issue arose.

Has any had similar experiences and solved them?

73,
Gary W7TEA


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[Elecraft] Loaded P3 For Sale

2019-08-05 Thread Michael Raskin
Factory-assembled, four-year old, P3 Panadapter with factory-installed 
Video/FFT Adapter, user installed Transmit Monitor Option, DCHF-2000 (1.6-54 
MHz) Directional Coupler, and CBLP3Y K3K3s Adapter Cable.  All in like-new 
condition without dents or scratches.  All supplied connecting cables are 
included.  In original Elecraft box.  Comes with cover made by Rose Kopp.  I 
am the original owner.  All for $695, plus shipping.

Mike W4UM
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Re: [Elecraft] Serial port problems

2019-08-05 Thread Gary Tuck via Elecraft
The culprit was the serial/USB cable.  Got a new one from Elecraft and all is 
well.

Thank you all.

73,
Gary W7TEA


> On Jul 16, 2019, at 1:17 PM, Gary Tuck  wrote:
> 
> For the first time I am having difficulties communicating with my K3/P3.  The 
> only thing which has changed is an upgrade to the Mac OS.  Now running 
> 10.14.5 Mohave.  I reinstalled the FTD driver for the serial cable, tried 
> both my iMac and MacBook and neither finds the P3 responding. I have not been 
> on the air for several months so I am not sure when the issue arose.
> 
> Has any had similar experiences and solved them?
> 
> 73,
> Gary W7TEA

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Re: [Elecraft] AX1 Loaded Whip Antenna - Elevation and Counterpoise?

2019-08-05 Thread MaverickNH
Thank you Joe! I shall look forward to reading your article soon.

Bret/N4SRN



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Re: [Elecraft] AX1 Loaded Whip Antenna - Elevation and Counterpoise?

2019-08-05 Thread J Chester
Bret,

I’ve just submitted a review of the AX1 to Practical Wireless magazine, which 
should appear be in the October issue, published end of September.

I found it worked well on the tripod. The key to getting the most out of it is 
to let the counterpoise wire fall to the ground about 3 ft or so from the 
radiator. As a very short base loaded antenna, I don’t think an extra foot or 
so of height will make a lot of difference. Your extra counterpoise wires is 
probably the best thing to do. More details in the article

73 de Joe MW1MWD


> On 4 Aug 2019, at 18:20, MaverickNH  wrote:
> 
> I've got my little 20m AX1 and 3 tuned counterpoise wires on a 4ft tripod
> with wires extending to plastic chairs 3ft off the ground too. If I got that
> whip up to 2m above ground with sloping wires, would I gain much?
> 
> Bret/N4SRN
> 
> 
> 
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