Re: [Elecraft] Using a quadcopter to hang an antenna

[Benny Aumala]

GA,

I have used CSV19 from:

http://www.antennalaunchers.com/antlaunching.html

Best way to use it is: one club-member has it and use it,

but service is available for all members.

This way the antenna will be launched OVER THE TREE.

All styles have been tried: army launch, sling-shots, shotgus etc.

This has been absolutely number one up to now.

Hydrocopter is promising if used properly.

Benny   OH9NB


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Re: [Elecraft] In praise of the sub Rx & Diversity - Addendum

[Don Wilhelm]

Drew,

True diversity reception requires 2 receivers which are locked together 
in not only frequency, but also in phase.
The KRX3 receiver is of the same design and implementation as the main 
receiver, making diversity reception possible.


The antennas must be different, one horizontal and the other vertical as 
one example although other combinations are possible - not only 
differing polarization but oriented in different directions.


The result is that an "option board" for one receiver will not create 
the conditions necessary for diversity receive - two receivers can 
produce that result.


73,
Don W3FPR

On 10/26/2017 8:19 PM, Drew AF2Z wrote:
I don't know all the technical details of diversity reception but have 
wondered if a diversity mode option board could be produced at a cheaper 
price than a full-blown sub receiver. Not sure how much I'd be willing 
to pay but sub-receiver pricing is definitely a no-go.

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Re: [Elecraft] Using a quadcopter to hang an antenna

[Lynn W. Taylor, WB6UUT]

Look at the release mechanism in this video:



On 10/26/2017 8:19 PM, Michael Walker wrote:

I did this years ago and even had it published in QST.  It was at least 4-5
years ago.

It was a basic Quad copter, a simple Wii flight controller and a dedicated
servo that pulled a pin out of a block to release the weight.

It worked very well.  I should get the pick back on my QRZ page.

I bet I had less than $100 invested.

Mike


On Thu, Oct 26, 2017 at 10:01 PM, Bill Johnson  wrote:


My problem when I miss is getting the weight to go back up without
tangling or coming right back at me.  I made a Pipe cannon using bicycle
pump compressed air with a sprinkler valve opening with two 9v batts.  The
same issue watch out for the weight.  I use a pair of caps on smaller pipe,
but that can still be an issue.  Now to find a use quad copter.

73,
Bill
K9YEQ

-Original Message-
From: elecraft-boun...@mailman.qth.net [mailto:elecraft-bounces@
mailman.qth.net] On Behalf Of Ken Chandler
Sent: Wednesday, October 25, 2017 2:13 AM
To: John Harper 
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Using a quadcopter to hang an antenna

Interesting.
I have a 5 servo 8ft Helicopter, been flying them for years, but I've
always used an old 12ft fishing beach caster with 30lb line and 5oz fishing
weight..
I can zip it over a 100ft tree, tie on a light line, reel the fishing line
back in then you can haul up the dipole end.
Takes a few minutes to set a full 160m dipole between 2 suitable trees for
Field day.
Look out for one at your next boot / flea market sale!!

Ken.. G0ORH

Sent from my iPad



On 24 Oct 2017, at 22:06, John Harper  wrote:

A few weeks ago several folks here were discussing the hanging of an
antenna line with a quadcopter and were wondering what's available to
allow a quad to drop a line over a tall tree or other structure.

https://ae5x.blogspot.com/2017/10/using-quadcopter-to-hang-antenna-lin
e.html

I just finished putting my 80m dipole up at the 90-foot level and took
a few photos of what I use to do it. The key to the whole thing is the
payload release device since a quad cannot descend with the line still
attached.

--

John AE5X
https://ae5x.blogspot.com
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Re: [Elecraft] Using a quadcopter to hang an antenna

[Michael Walker]

I did this years ago and even had it published in QST.  It was at least 4-5
years ago.

It was a basic Quad copter, a simple Wii flight controller and a dedicated
servo that pulled a pin out of a block to release the weight.

It worked very well.  I should get the pick back on my QRZ page.

I bet I had less than $100 invested.

Mike


On Thu, Oct 26, 2017 at 10:01 PM, Bill Johnson  wrote:

> My problem when I miss is getting the weight to go back up without
> tangling or coming right back at me.  I made a Pipe cannon using bicycle
> pump compressed air with a sprinkler valve opening with two 9v batts.  The
> same issue watch out for the weight.  I use a pair of caps on smaller pipe,
> but that can still be an issue.  Now to find a use quad copter.
>
> 73,
> Bill
> K9YEQ
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net [mailto:elecraft-bounces@
> mailman.qth.net] On Behalf Of Ken Chandler
> Sent: Wednesday, October 25, 2017 2:13 AM
> To: John Harper 
> Cc: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] Using a quadcopter to hang an antenna
>
> Interesting.
> I have a 5 servo 8ft Helicopter, been flying them for years, but I've
> always used an old 12ft fishing beach caster with 30lb line and 5oz fishing
> weight..
> I can zip it over a 100ft tree, tie on a light line, reel the fishing line
> back in then you can haul up the dipole end.
> Takes a few minutes to set a full 160m dipole between 2 suitable trees for
> Field day.
> Look out for one at your next boot / flea market sale!!
>
> Ken.. G0ORH
>
> Sent from my iPad
>
>
> > On 24 Oct 2017, at 22:06, John Harper  wrote:
> >
> > A few weeks ago several folks here were discussing the hanging of an
> > antenna line with a quadcopter and were wondering what's available to
> > allow a quad to drop a line over a tall tree or other structure.
> >
> > https://ae5x.blogspot.com/2017/10/using-quadcopter-to-hang-antenna-lin
> > e.html
> >
> > I just finished putting my 80m dipole up at the 90-foot level and took
> > a few photos of what I use to do it. The key to the whole thing is the
> > payload release device since a quad cannot descend with the line still
> > attached.
> >
> > --
> >
> > John AE5X
> > https://ae5x.blogspot.com
> > __
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> > g0...@sky.com
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Re: [Elecraft] Using a quadcopter to hang an antenna

[Bill Johnson]

My problem when I miss is getting the weight to go back up without tangling or 
coming right back at me.  I made a Pipe cannon using bicycle pump compressed 
air with a sprinkler valve opening with two 9v batts.  The same issue watch out 
for the weight.  I use a pair of caps on smaller pipe, but that can still be an 
issue.  Now to find a use quad copter.

73,
Bill
K9YEQ

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ken Chandler
Sent: Wednesday, October 25, 2017 2:13 AM
To: John Harper 
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Using a quadcopter to hang an antenna

Interesting.
I have a 5 servo 8ft Helicopter, been flying them for years, but I've always 
used an old 12ft fishing beach caster with 30lb line and 5oz fishing weight..
I can zip it over a 100ft tree, tie on a light line, reel the fishing line back 
in then you can haul up the dipole end.
Takes a few minutes to set a full 160m dipole between 2 suitable trees for 
Field day. 
Look out for one at your next boot / flea market sale!!

Ken.. G0ORH

Sent from my iPad


> On 24 Oct 2017, at 22:06, John Harper  wrote:
> 
> A few weeks ago several folks here were discussing the hanging of an 
> antenna line with a quadcopter and were wondering what's available to 
> allow a quad to drop a line over a tall tree or other structure.
> 
> https://ae5x.blogspot.com/2017/10/using-quadcopter-to-hang-antenna-lin
> e.html
> 
> I just finished putting my 80m dipole up at the 90-foot level and took 
> a few photos of what I use to do it. The key to the whole thing is the 
> payload release device since a quad cannot descend with the line still 
> attached.
> 
> --
> 
> John AE5X
> https://ae5x.blogspot.com
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Re: [Elecraft] In praise of the sub Rx & Diversity

[Bill Johnson]

I use diversity on 20 meters with a vertical SteppIr and a loop.  Both are 
separated about 150'. What a difference.  Amazing.  Makes a huge difference 
with stations fading in and out and near the noise level.  I can work them with 
the Loop, but the vertical is so helpful when receiving.

73,
Bill
K9YEQ

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gary Smith
Sent: Tuesday, October 24, 2017 10:38 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] In praise of the sub Rx & Diversity

When I bought the k3 in 09 I went all out and bought most of the accessories to 
go with it. One of these was the sub Rx and a full matching set of crystals for 
it. As upgrades happened I did them all and wasn't using the Sub Rx in 
diversity so much but, the advantage of the Sub Rx was always there with 
flexibility I take for granted.

So I upgrade to the K3s and migrated the sub Rx to it as well. I just don't 
think of diversity much but that was one of the reasons I bought the Sub Rx in 
the first place. With the 3 dB loss going to Diversity, I just listened more 
with the main receiver and let it go from there.

So today I'm working a ve7 on 10M and the band is going out. I can hear him but 
it's at that marginal iffy point, I was missing characters in his CW. I have a 
HI-Z triangular & a circle 8 pair of Rx antennas. The Circle 8 rocks on the low 
bands, has a filter to cut out above 40M but the triangular has no such filter 
and I often hear better on it than on the the roof mounted tribander. So for 
fun, I used diversity and the triangular on the sub,
160 sloper for the Tx antenna & Voilà, I heard him so much better, finished the 
Q and that reminded me of the real advantage of diversity and why it is an 
asset.

So now it's tonight, I see 3C0L is still on the air at around 3AM their time, 
on 20M. They're heading home today and the low band antenna is packed up 
already. 
What troupers to still be in the game at this point. But I digress... So here 
they are, I don't have a good antenna for 20M, have to use the 160M antenna or 
tribander. 
RFI from the neighbors makes the tribander useless so I hear them on the sloper 
and can hear them on the Hi-Z Triangular a bit better but much QSB so 
remembering the success with the VE7 earlier I go Diversity & all of a sudden, 
solid Q5 copy, no QSB and I snagged them on 20 CW.

Diversity really made the difference. I bought the K3s because it had such 
excellent specs, nothing else to me came close, save for 1-2 radios that in 09 
were hot and cost more than a new car. And they weren't any better in 
practicality than the K3 was. I bought the Sub Rx for the diversity and now 
today, while the K3s is itself stellar in all the right ways, it is an a better 
product with the Sub Rx. 
I'm really honored to have such an
incredibly capable radio.

Just sayin'

73,

Gary
KA1J

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Re: [Elecraft] In praise of the sub Rx & Diversity - Addendum

[Walter Underwood]

Probably not. Diversity reception works because there are two matched 
receivers, even matched in phase of the detected audio. That allows the best 
signal to win based just on the signal, not the receiver.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Oct 26, 2017, at 5:19 PM, Drew AF2Z  wrote:
> 
> I don't know all the technical details of diversity reception but have 
> wondered if a diversity mode option board could be produced at a cheaper 
> price than a full-blown sub receiver. Not sure how much I'd be willing to pay 
> but sub-receiver pricing is definitely a no-go.
> 
> 73,
> Drew
> AF2Z
> 
> 
> 
> On 10/26/17 18:18, Gary Smith wrote:
>> Folks,
>> I thought I should also share these
>> additional thoughts about diversity &
>> Elecraft, the company as well, with the
>> group:
>> It is such an oasis to find a company that
>> not only makes top quality equipment but
>> has a fantastic after sale support of
>> these products.
>> I Loved my K3, wanted a K3s and sold the
>> K3 to a friend who wanted one for mobile
>> contesting, with me buying a K3s to
>> replace it. Feeling remorse at selling the
>> K3 & having to use a Corsair II as my only
>> backup rig, I bought another (very old)
>> but fully updated K3 for a backup in case
>> I have to send my new K3s back for repair.
>> I don't hear much about the Diversity
>> option mentioned here often and thought
>> I'd bring up how much of an advantage it
>> can be, even with all the stand-alone
>> stats of a K3s. Diversity still makes the
>> K3 and now, the K3s an even better, more
>> capable radio. If you want the best of the
>> best, Diversity gives you that option.
>> 73,
>> Gary
>> KA1J
> 
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Re: [Elecraft] P3 SVGA macro editor

[K5MWR via Elecraft]

I would love to see this also

Dave K5MWR


On 10/26/2017 10:10 AM, Chuck Teague via Elecraft wrote:

Is there anything in the works to provide a macro editor for the P3 that allows 
creation and editing of the 50 macros in the SVGA? That would be really helpful 
and a vast improvement over the present, very limited, editing capability.
Chuck TeagueNN7U
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Re: [Elecraft] In praise of the sub Rx & Diversity - Addendum

[Drew AF2Z]

I don't know all the technical details of diversity reception but have 
wondered if a diversity mode option board could be produced at a cheaper 
price than a full-blown sub receiver. Not sure how much I'd be willing 
to pay but sub-receiver pricing is definitely a no-go.


73,
Drew
AF2Z



On 10/26/17 18:18, Gary Smith wrote:

Folks,

I thought I should also share these
additional thoughts about diversity &
Elecraft, the company as well, with the
group:

It is such an oasis to find a company that
not only makes top quality equipment but
has a fantastic after sale support of
these products.

I Loved my K3, wanted a K3s and sold the
K3 to a friend who wanted one for mobile
contesting, with me buying a K3s to
replace it. Feeling remorse at selling the
K3 & having to use a Corsair II as my only
backup rig, I bought another (very old)
but fully updated K3 for a backup in case
I have to send my new K3s back for repair.

I don't hear much about the Diversity
option mentioned here often and thought
I'd bring up how much of an advantage it
can be, even with all the stand-alone
stats of a K3s. Diversity still makes the
K3 and now, the K3s an even better, more
capable radio. If you want the best of the
best, Diversity gives you that option.

73,

Gary
KA1J




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Re: [Elecraft] KXPA100 not transmitting

[SAMUEL L ROWE]

Thanks Don

I knew it had to be something simple that I missed.

73

Sam KG9NG



From: Don Wilhelm 
Sent: Thursday, October 26, 2017 5:45 PM
To: SAMUEL L ROWE; Elecraft@mailman.qth.net
Subject: Re: [Elecraft] KXPA100 not transmitting

Sam,

That is normal operation while the KXAT100 is tuning.  See the KXPA100
manual page 25 "ATU Tuning".

The power is limited to 25 watts while the ATU is tuning and the 25/SWR
LED under POWER OUT blinks.

Note that ATU is different than TUNE - see page 19 in the KX2 manual.

73,
Don W3FPR

On 10/26/2017 5:45 PM, SAMUEL L ROWE wrote:
> Is anyone running a Elecraft KXPA100 amp with KXAT100 with a KX2 or KX3 that 
> could help me with a little troubleshooting?
>
> The power amp light blinks slowly (not on steady) and while turner tunes, the 
> amp will not go to transmit but shows 25 W output.  I am using the 
> KX2-controled connection.
>
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Re: [Elecraft] KXPA100 not transmitting

[Don Wilhelm]

Sam,

That is normal operation while the KXAT100 is tuning.  See the KXPA100 
manual page 25 "ATU Tuning".


The power is limited to 25 watts while the ATU is tuning and the 25/SWR 
LED under POWER OUT blinks.


Note that ATU is different than TUNE - see page 19 in the KX2 manual.

73,
Don W3FPR

On 10/26/2017 5:45 PM, SAMUEL L ROWE wrote:

Is anyone running a Elecraft KXPA100 amp with KXAT100 with a KX2 or KX3 that 
could help me with a little troubleshooting?

The power amp light blinks slowly (not on steady) and while turner tunes, the 
amp will not go to transmit but shows 25 W output.  I am using the 
KX2-controled connection.


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Re: [Elecraft] KXPA100 not transmitting

[dick]

The KXPA100 blinks a LED while ATU TUNE is in progress.  The ATU TUNE needs
steady carrier from your KX2.  ATU TUNE is done with exciter power, and when
it's complete, the amp can be switched in.

73 de Dick, K6KR

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of SAMUEL L ROWE
Sent: Thursday, October 26, 2017 14:46
To: Elecraft@mailman.qth.net
Subject: [Elecraft] KXPA100 not transmitting

Is anyone running a Elecraft KXPA100 amp with KXAT100 with a KX2 or KX3 that
could help me with a little troubleshooting?

The power amp light blinks slowly (not on steady) and while turner tunes,
the amp will not go to transmit but shows 25 W output.  I am using the
KX2-controled connection.

My KX2 S# 01749 was new from Elecraft; the KXPA100 S# 1532 was acquired
gently? used.

73

Sam, KG9NG

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[Elecraft] In praise of the sub Rx & Diversity - Addendum

[Gary Smith]

Folks,

I thought I should also share these 
additional thoughts about diversity & 
Elecraft, the company as well, with the 
group: 

It is such an oasis to find a company that 
not only makes top quality equipment but 
has a fantastic after sale support of 
these products.

I Loved my K3, wanted a K3s and sold the 
K3 to a friend who wanted one for mobile 
contesting, with me buying a K3s to 
replace it. Feeling remorse at selling the 
K3 & having to use a Corsair II as my only 
backup rig, I bought another (very old) 
but fully updated K3 for a backup in case 
I have to send my new K3s back for repair.

I don't hear much about the Diversity 
option mentioned here often and thought 
I'd bring up how much of an advantage it 
can be, even with all the stand-alone 
stats of a K3s. Diversity still makes the 
K3 and now, the K3s an even better, more 
capable radio. If you want the best of the 
best, Diversity gives you that option.

73,

Gary
KA1J


> When I bought the k3 in 09 I went all out 
> and bought most of the accessories to go 
> with it. One of these was the sub Rx and a 
> full matching set of crystals for it. As 
> upgrades happened I did them all and 
> wasn't using the Sub Rx in diversity so 
> much but, the advantage of the Sub Rx was 
> always there with flexibility I take for 
> granted.
> 
> So I upgrade to the K3s and migrated the 
> sub Rx to it as well. I just don't think 
> of diversity much but that was one of the 
> reasons I bought the Sub Rx in the first 
> place. With the 3 dB loss going to 
> Diversity, I just listened more with the 
> main receiver and let it go from there.
> 
> So today I'm working a ve7 on 10M and the 
> band is going out. I can hear him but it's 
> at that marginal iffy point, I was missing 
> characters in his CW. I have a HI-Z 
> triangular & a circle 8 pair of Rx 
> antennas. The Circle 8 rocks on the low 
> bands, has a filter to cut out above 40M 
> but the triangular has no such filter and 
> I often hear better on it than on the the 
> roof mounted tribander. So for fun, I used 
> diversity and the triangular on the sub, 
> 160 sloper for the Tx antenna & Voilà, I 
> heard him so much better, finished the Q 
> and that reminded me of the real advantage 
> of diversity and why it is an asset.
> 
> So now it's tonight, I see 3C0L is still 
> on the air at around 3AM their time, on 
> 20M. They're heading home today and the 
> low band antenna is packed up already. 
> What troupers to still be in the game at 
> this point. But I digress... So here they 
> are, I don't have a good antenna for 20M, 
> have to use the 160M antenna or tribander. 
> RFI from the neighbors makes the tribander 
> useless so I hear them on the sloper and 
> can hear them on the Hi-Z Triangular a bit 
> better but much QSB so remembering the 
> success with the VE7 earlier I go 
> Diversity & all of a sudden, solid Q5 
> copy, no QSB and I snagged them on 20 CW.
> 
> Diversity really made the difference. I 
> bought the K3s because it had such 
> excellent specs, nothing else to me came 
> close, save for 1-2 radios that in 09 were 
> hot and cost more than a new car. And they 
> weren't any better in practicality than 
> the K3 was. I bought the Sub Rx for the 
> diversity and now today, while the K3s is 
> itself stellar in all the right ways, it 
> is an a better product with the Sub Rx. 
> I'm really honored to have such an 
> incredibly capable radio.
> 
> Just sayin'
> 
> 73,
> 
> Gary
> KA1J
> 
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[Elecraft] KXPA100 not transmitting

[SAMUEL L ROWE]

Is anyone running a Elecraft KXPA100 amp with KXAT100 with a KX2 or KX3 that 
could help me with a little troubleshooting?

The power amp light blinks slowly (not on steady) and while turner tunes, the 
amp will not go to transmit but shows 25 W output.  I am using the 
KX2-controled connection.

My KX2 S# 01749 was new from Elecraft; the KXPA100 S# 1532 was acquired gently? 
used.

73

Sam, KG9NG

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Re: [Elecraft] P3 SVGA macro editor

[Dave Cole (NK7Z)]

I second that!  I would LOVE a macro editor.

73s and thanks,
Dave
NK7Z
http://www.nk7z.net

On 10/26/2017 08:10 AM, Chuck Teague via Elecraft wrote:

Is there anything in the works to provide a macro editor for the P3 that allows 
creation and editing of the 50 macros in the SVGA? That would be really helpful 
and a vast improvement over the present, very limited, editing capability.
Chuck TeagueNN7U
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Re: [Elecraft] KLPA3A power transistor thermal stress concerns

[Wes Stewart]

Don't think so from the description Wayne gave on the KX3 Yahoo group.

Wes N7WS

On 10/25/2017 8:48 AM, Ignacy wrote:

I assume that the LPA in K3 is
similar to the amp in KX3.

Ignacy, NO9E


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Re: [Elecraft] FT8 output power KX2/KX3

[Walter Underwood]

The KX3 specifications in the manual (page 54) say 5 W for digital modes. I 
expect the KX2 specs also list a power level.

"Supply voltage of 11 V or higher (on key-down) required for settings above 5 W.
5 W or less recommended for high-duty-cycle modes (FM, AM, DATA). Power will
automatically be reduced if PA temperature or current limits are exceeded."

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Oct 26, 2017, at 6:05 AM, Barry N1EU  wrote:
> 
> Thanks Tom and Don for the responses.  I'll try a few 15sec FT8 xmit cycles
> at 50% (7.5W) into a dummy load while monitoring PA temp.  Any guidance on
> what the upper safe limit is for PA temp?
> 
> Thanks & 73,
> Barry N1EU
> 
> On Thu, Oct 26, 2017 at 8:34 AM, Don Wilhelm  wrote:
> 
>> Barry,
>> 
>> The normal recommendation is for 50% of the maximum power.
>> The KX3 and the KX2 will roll back power for protection if the PA
>> transistors get too hot.
>> I know the KX3 rolls back to 5 watts, but I am not sure about the level
>> for the KX2.
>> 
>> 73,
>> Don W3FPR
>> 
>> 
>> On 10/26/2017 7:50 AM, Barry N1EU wrote:
>> 
>>> What is the recommended max power output setting for the KX2 and for the
>>> KX3 for normal FT8 use without after-market heatsink?
>>> 
>> 
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[Elecraft] P3 SVGA macro editor

[Chuck Teague via Elecraft]

Is there anything in the works to provide a macro editor for the P3 that allows 
creation and editing of the 50 macros in the SVGA? That would be really helpful 
and a vast improvement over the present, very limited, editing capability.
Chuck TeagueNN7U 
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Re: [Elecraft] KX2 talk at Foothill ARS, Oct. 27th

[Yngvi (TF3Y)]

Hi Wayne.
Will your presentation be made available on-line later on?
Thanks & 73,
Yngvi TF3Y

On Thu, Oct 26, 2017 at 2:55 AM, Wayne Burdick  wrote:

> Hi all,
>
> I’ll be speaking about the KX2 at the FARS meeting this Friday night.
> Among other topics, I’ll cover the KX2’s ancestral lineage (shamelessly
> cherry-picked QRP rigs of yore), its technology and design goals, field
> applications, and lightweight antennas. I’ll be bringing a prototype of the
> Elecraft AX1 two-piece whip.
>
> FARS meetings are open to the public and all are invited. The meeting will
> be in the multi-use room at Covington School, 205 Covington Road, Los
> Altos. Nearest freeway exit is I-280 at El Monte Road.  The school is about
> 5 minutes from the intersection of Covington and El Monte Roads.  Doors
> open at 7 pm for socializing. Meeting starts at 7:30 pm. My presentation
> will start between 7:45 and 8 pm.
>
> Hope to see some of you there.
>
> 73,
> Wayne
> N6KR
>
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Re: [Elecraft] Using a quadcopter to hang an antenna

[QRP Labs]

Hi all

It doesn't have to cost $800.

A couple of years ago I bought a Chinese quadcopter, complete with video
camera, 2GB micro-SD card, card-reader, spare propellers, 2.4GHz remote
controller, and including shipping - all for $68. But I think the price has
come down now. The total "diameter" of the thing is only 35cm or so. The
quadcopter at time of purchase, had various optional attachments you could
choose, not just the video camera. There were things that fired little
darts and stuff like that. So basically there is a spare channel which is
operated by a button on the remote control, no need for an additional radio
transmitter. Of course it doesn't have things like GPS hovering and you
don't want to fly it in any kind of wind, any at all.

I have a plan to hoist a wire over my next door neighbour's tree. My
previous attempt to THROW it over the tree by standing on my rooftop did
manage to land in the middle of the tree but was hardly OVER it, and in
hindsight trying to throw it while balancing on the roof didn't seem like
it would increase my life expectancy any. A storm took down the wire. And
the quadcopter seems a better solution.

A few weeks back, I did go out one morning early, before the sea breeze
started up. I was all ready to give it a go, but I discovered that the
fishing line I have is a little too short. Then I remembered how one
earlier attempt at throwing fishing line into the tree from the roof had
resulted in a lot of tangled up line which had to be thrown away. Now I
have bought some more line and yet to get around to a retry.

Even that tiny cheap quadcopter had plenty of power to lift the fishing
line to around twice the tree height (I guess about 60 feet), and it had
still enough power to lift the plastic reel that the end of the line was
tired to.

73 Hans G0UPL
http://qrp-labs.com
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Re: [Elecraft] FT8 output power KX2/KX3

[Don Wilhelm]

Barry,

You should be able to tolerate 60 degC measured at the PA transistor 
tabs for short periods.


You can read the PA temperature in the Alternate VFO B display.

73,
Don W3FPR

On 10/26/2017 9:05 AM, Barry N1EU wrote:

Thanks Tom and Don for the responses.  I'll try a few 15sec FT8 xmit cycles
at 50% (7.5W) into a dummy load while monitoring PA temp.  Any guidance on
what the upper safe limit is for PA temp?

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Re: [Elecraft] FT8 output power KX2/KX3

[Barry N1EU]

Thanks Tom and Don for the responses.  I'll try a few 15sec FT8 xmit cycles
at 50% (7.5W) into a dummy load while monitoring PA temp.  Any guidance on
what the upper safe limit is for PA temp?

Thanks & 73,
Barry N1EU

On Thu, Oct 26, 2017 at 8:34 AM, Don Wilhelm  wrote:

> Barry,
>
> The normal recommendation is for 50% of the maximum power.
> The KX3 and the KX2 will roll back power for protection if the PA
> transistors get too hot.
> I know the KX3 rolls back to 5 watts, but I am not sure about the level
> for the KX2.
>
> 73,
> Don W3FPR
>
>
> On 10/26/2017 7:50 AM, Barry N1EU wrote:
>
>> What is the recommended max power output setting for the KX2 and for the
>> KX3 for normal FT8 use without after-market heatsink?
>>
>
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Re: [Elecraft] FT8 output power KX2/KX3

[Don Wilhelm]

Barry,

The normal recommendation is for 50% of the maximum power.
The KX3 and the KX2 will roll back power for protection if the PA 
transistors get too hot.
I know the KX3 rolls back to 5 watts, but I am not sure about the level 
for the KX2.


73,
Don W3FPR

On 10/26/2017 7:50 AM, Barry N1EU wrote:

What is the recommended max power output setting for the KX2 and for the
KX3 for normal FT8 use without after-market heatsink?

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Re: [Elecraft] FT8 output power KX2/KX3

[Tommy]

  I use 5-10 watts without any issues. 3-4 bars on the ALC.

73!

Tom - KB2SMS

KX2 #01927


On 10/26/2017 07:50 AM, Barry N1EU wrote:

What is the recommended max power output setting for the KX2 and for the
KX3 for normal FT8 use without after-market heatsink?

Thanks & 73,
Barry N1EU


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Re: [Elecraft] In praise of the sub Rx & Diversity

[Gary Smith]

You're welcome. It is such an oasis to 
find a company that not only makes top 
quality equipment but has a fantastic 
after sale support of these products.

I Loved my K3, sold it to a friend who 
wanted one for mobile contesting, with me 
buying a K3s to replace it. Feeling 
remorse at selling the K3 & having to use 
a Corsair II as my only backup rig, I 
bought another (very old) K3 again for a 
backup in case I have to sent the K3s 
back.

I don't hear much about the Diversity 
option mentioned here any more and thought 
I'd bring up how much of an advantage it 
can be, even with all the stand-alone 
stats of a K3s. Diversity still makes the 
K3s an even better, more capable radio. If 
you want the best of the best, Diversity 
gives you that option.

73,

Gary
KA1J

> Thanks :)
> 
> Wayne
> N6KR
> 
> 
> > On Oct 24, 2017, at 8:37 PM, Gary Smith  wrote:
> > 
> > When I bought the k3 in 09 I went all out 
> > and bought most of the accessories to go 
> > with it. One of these was the sub Rx and a 
> > full matching set of crystals for it. As 
> > upgrades happened I did them all and 
> > wasn't using the Sub Rx in diversity so 
> > much but, the advantage of the Sub Rx was 
> > always there with flexibility I take for 
> > granted.
> > 
> > So I upgrade to the K3s and migrated the 
> > sub Rx to it as well. I just don't think 
> > of diversity much but that was one of the 
> > reasons I bought the Sub Rx in the first 
> > place. With the 3 dB loss going to 
> > Diversity, I just listened more with the 
> > main receiver and let it go from there.
> > 
> > So today I'm working a ve7 on 10M and the 
> > band is going out. I can hear him but it's 
> > at that marginal iffy point, I was missing 
> > characters in his CW. I have a HI-Z 
> > triangular & a circle 8 pair of Rx 
> > antennas. The Circle 8 rocks on the low 
> > bands, has a filter to cut out above 40M 
> > but the triangular has no such filter and 
> > I often hear better on it than on the the 
> > roof mounted tribander. So for fun, I used 
> > diversity and the triangular on the sub, 
> > 160 sloper for the Tx antenna & Voilà, I 
> > heard him so much better, finished the Q 
> > and that reminded me of the real advantage 
> > of diversity and why it is an asset.
> > 
> > So now it's tonight, I see 3C0L is still 
> > on the air at around 3AM their time, on 
> > 20M. They're heading home today and the 
> > low band antenna is packed up already. 
> > What troupers to still be in the game at 
> > this point. But I digress... So here they 
> > are, I don't have a good antenna for 20M, 
> > have to use the 160M antenna or tribander. 
> > RFI from the neighbors makes the tribander 
> > useless so I hear them on the sloper and 
> > can hear them on the Hi-Z Triangular a bit 
> > better but much QSB so remembering the 
> > success with the VE7 earlier I go 
> > Diversity & all of a sudden, solid Q5 
> > copy, no QSB and I snagged them on 20 CW.
> > 
> > Diversity really made the difference. I 
> > bought the K3s because it had such 
> > excellent specs, nothing else to me came 
> > close, save for 1-2 radios that in 09 were 
> > hot and cost more than a new car. And they 
> > weren't any better in practicality than 
> > the K3 was. I bought the Sub Rx for the 
> > diversity and now today, while the K3s is 
> > itself stellar in all the right ways, it 
> > is an a better product with the Sub Rx. 
> > I'm really honored to have such an 
> > incredibly capable radio.
> > 
> > Just sayin'
> > 
> > 73,
> > 
> > Gary
> > KA1J
> > 
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> 
> 



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[Elecraft] FT8 output power KX2/KX3

[Barry N1EU]

What is the recommended max power output setting for the KX2 and for the
KX3 for normal FT8 use without after-market heatsink?

Thanks & 73,
Barry N1EU
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