Re: [Elecraft] KPA500 max heat sink temp?

[Rick NK7I]

I have both.  I've had the KPA500 much longer of course and it's nice.  
Small, concise and quiet, perfect for closest stations (tight spaces).


Having the KAT500 (essentially) built into one package with the 1500 
watt amp (less cabling but one less antenna port too than the KAT500) 
with legal (US) limit is awesome, meaning full range from 0.1-1500 watts 
out (with overhead, not straining, don't ask ;-) oops).


Since I moved to strictly resonant antennas, the KPA1500 tuner is being 
used only as an antenna switch, the fan noise isn't awful (the 12V 60A 
power supply fan on the other hand... wow!), but since that 240V circuit 
isn't on the house generator, when the power goes out, it'll be a quick 
swap to put the KPA500/KAT500 back into play.  It's nice to have options.


With the KPA500, one must still use finesse, with the KPA1500, one 
shouts "Mongo hungry; feed Mongo!" (movie reference).  I strongly 
suspect that the KPA1500 will integrate so well into the K4 it'll simply 
be amazing, outstanding,  (I'll find out later 
this summer).


Each has it's place, if we ever get out of house arrest and back to 
having DXPeditions.  My logbook is beginning to sound like hungry 
Mongo...  band slots, while tasty, do not make a meal.


73,
Rick NK7I


On 7/8/2020 5:08 PM, Eric Norris wrote:
Actually, I have, Rick.  The KPA1500 is the second greatest amplifier 
in the history of the solar system.   It's a BattleBot, a monster, the 
doomsday legal-limit amplifier.  But the KPA500 is tiny, and so quiet 
that I can run it in the same room where the XYL watches TV.  My cat 
"Bubs" McLovin does not even stir from his dreams of taking down a 
Cape Buffalo when the KPA500 hits FAN3.


73 Eric WD6DBM

On Wed, Jul 8, 2020, 2:34 PM Rick Bates, NK7I > wrote:


Then you haven't used a KPA1500.

Rick NK7I


On 7/8/2020 2:11 PM, Eric Norris wrote:
> Thanks, Jack!  Now the only question is, is the KPA500 a great
amp, or the
> greatest amp ever?  I'm in the second camp.
>
> 73.5  Eric WD6DBM
>
> On Wed, Jul 8, 2020, 1:16 PM Jack Brindle mailto:jackbrin...@me.com>> wrote:
>
>> I can confirm that KPA500 V1.00 firmware, which was the first
released,
>> had a max temperature of 90 degrees C. This has not been
changed in any
>> subsequent code.
>>
>> As for the input power, the amplifier has improved over time.
My original
>> prototype KPA500 requires power in the range described (about
35 - 40
>> watts), while my new one (just over a year old) needs about 20
or so watts.
>> Both are great amps!
>>
>> 73!
>> Jack, W6FB
>>
>>
>>> On Jul 8, 2020, at 1:00 PM, William Hammond via Elecraft <
>> elecraft@mailman.qth.net > wrote:
>>> Hi Eric, My manual (revision B, 2011) that came with my SN
0149 says 90C
>> maximum, page14 in the specifications.  It also says drive
power 30-40
>> watts for 500 out and I have never beed even close to that,
usually 22-26
>> watts drive.
>>> FYI,
>>> Bill-AK5X
>>>
 On Jul 8, 2020, at 6:00 AM, Eric Norris
mailto:norrislawfi...@gmail.com>>
>> wrote:
 I just read in the current KPA500 Manual that max heat sink
temp is 90C.
 Is this true for my first-year production KPA500?  I seem to
remember
 somethink like 75C.  I cant find my old manual.

 73 Eric WD6DBM
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Re: [Elecraft] xv transverters

[Dave Fugleberg]

I built three of them (144, 222, 432) and have used them with my K3 in my
contest rover for several years. They are solid performers, and they work
seamlessly with the K3.

Since they can be used with many kinds of radios in many configurations,
there are a number of jumpers and connections you must set correctly to
make them work in your specific setup.
What radio are you using for the IF?

Don’s advice is spot on (as always) - best to set up one at a time and
remove some variables.

73 de W0ZF


On Wed, Jul 8, 2020 at 8:34 PM Don Wilhelm  wrote:

> Joe,
>
> Instead of daisy-chaining all the transverters, try connecting only one
> at a time (you should be able to use the daisy-chain control cable, but
> connect the TX and RX coax directly fron the K2/K3/K3S to the transverter.
>
> Then tell us what the particular problems are with each transveter.  We
> cannot give much advice on "It just does not work right".
>
> 73,
> Don W3FPR
>
>
> On 7/8/2020 8:10 PM, Joseph McIntire wrote:
> > I have two I need some help with neither one works or ever did. I
> believe I did every thing correct and believed something happened in trying
> to set them up to do the alignment procedures. But the power indicator came
> on till I hooked them up to do the alignment. I really cant see paying
> shipping and $125 an hour to get something fixed that cost $369.00 new. But
> they must be pretty fickle if one miss step in the setup takes them out.
> Just hate to see $700. 00 go down the drain.
> >
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Re: [Elecraft] xv transverters

[Don Wilhelm]

Joe,

Instead of daisy-chaining all the transverters, try connecting only one 
at a time (you should be able to use the daisy-chain control cable, but 
connect the TX and RX coax directly fron the K2/K3/K3S to the transverter.


Then tell us what the particular problems are with each transveter.  We 
cannot give much advice on "It just does not work right".


73,
Don W3FPR


On 7/8/2020 8:10 PM, Joseph McIntire wrote:

I have two I need some help with neither one works or ever did. I believe I did 
every thing correct and believed something happened in trying to set them up to 
do the alignment procedures. But the power indicator came on till I hooked them 
up to do the alignment. I really cant see paying shipping and $125 an hour to 
get something fixed that cost $369.00 new. But they must be pretty fickle if 
one miss step in the setup takes them out. Just hate to see $700. 00 go down 
the drain.


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[Elecraft] RemoteRig Help

[William Liporace]

Thought I would throw this out there..

I have a K3/0 mini, K3S and a RemoteRig setup.. To the best of my 
knowledge it was all working. I had pulled the plug a while back. Lots 
of things going on and decided to offer the station to a friend. I can't 
see to make it work. Anyone have great radio and RCC instructions or 
have a few minutes to walk me through this??


TNX Will WC2L

--
William Liporace WC2L
http://www.wc2l.com or http://dxc.wc2l.com
AR-Cluster Node  telnet dxc.wc2l.com or 144.93 MHz
w...@wc2l.com

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Re: [Elecraft] KPA500 max heat sink temp?

[Eric Norris]

Actually, I have, Rick.  The KPA1500 is the second greatest amplifier in
the history of the solar system.   It's a BattleBot, a monster, the
doomsday legal-limit amplifier.  But the KPA500 is tiny, and so quiet that
I can run it in the same room where the XYL watches TV.  My cat "Bubs"
McLovin does not even stir from his dreams of taking down a Cape Buffalo
when the KPA500 hits FAN3.

73 Eric WD6DBM

On Wed, Jul 8, 2020, 2:34 PM Rick Bates, NK7I  wrote:

> Then you haven't used a KPA1500.
>
> Rick NK7I
>
>
> On 7/8/2020 2:11 PM, Eric Norris wrote:
> > Thanks, Jack!  Now the only question is, is the KPA500 a great amp, or
> the
> > greatest amp ever?  I'm in the second camp.
> >
> > 73.5  Eric WD6DBM
> >
> > On Wed, Jul 8, 2020, 1:16 PM Jack Brindle  wrote:
> >
> >> I can confirm that KPA500 V1.00 firmware, which was the first released,
> >> had a max temperature of 90 degrees C. This has not been changed in any
> >> subsequent code.
> >>
> >> As for the input power, the amplifier has improved over time. My
> original
> >> prototype KPA500 requires power in the range described (about 35 - 40
> >> watts), while my new one (just over a year old) needs about 20 or so
> watts.
> >> Both are great amps!
> >>
> >> 73!
> >> Jack, W6FB
> >>
> >>
> >>> On Jul 8, 2020, at 1:00 PM, William Hammond via Elecraft <
> >> elecraft@mailman.qth.net> wrote:
> >>> Hi Eric, My manual (revision B, 2011) that came with my SN 0149 says
> 90C
> >> maximum, page14 in the specifications.  It also says drive power 30-40
> >> watts for 500 out and I have never beed even close to that, usually
> 22-26
> >> watts drive.
> >>> FYI,
> >>> Bill-AK5X
> >>>
>  On Jul 8, 2020, at 6:00 AM, Eric Norris 
> >> wrote:
>  I just read in the current KPA500 Manual that max heat sink temp is
> 90C.
>  Is this true for my first-year production KPA500?  I seem to remember
>  somethink like 75C.  I cant find my old manual.
> 
>  73 Eric WD6DBM
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[Elecraft] xv transverters

[Joseph McIntire]

I have two I need some help with neither one works or ever did. I believe I did 
every thing correct and believed something happened in trying to set them up to 
do the alignment procedures. But the power indicator came on till I hooked them 
up to do the alignment. I really cant see paying shipping and $125 an hour to 
get something fixed that cost $369.00 new. But they must be pretty fickle if 
one miss step in the setup takes them out. Just hate to see $700. 00 go down 
the drain.

Joe AB3JN

Sent from Mail for Windows 10

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Re: [Elecraft] KPA500 max heat sink temp?

[Rick Bates, NK7I]

Then you haven't used a KPA1500.

Rick NK7I


On 7/8/2020 2:11 PM, Eric Norris wrote:

Thanks, Jack!  Now the only question is, is the KPA500 a great amp, or the
greatest amp ever?  I'm in the second camp.

73.5  Eric WD6DBM

On Wed, Jul 8, 2020, 1:16 PM Jack Brindle  wrote:


I can confirm that KPA500 V1.00 firmware, which was the first released,
had a max temperature of 90 degrees C. This has not been changed in any
subsequent code.

As for the input power, the amplifier has improved over time. My original
prototype KPA500 requires power in the range described (about 35 - 40
watts), while my new one (just over a year old) needs about 20 or so watts.
Both are great amps!

73!
Jack, W6FB



On Jul 8, 2020, at 1:00 PM, William Hammond via Elecraft <

elecraft@mailman.qth.net> wrote:

Hi Eric, My manual (revision B, 2011) that came with my SN 0149 says 90C

maximum, page14 in the specifications.  It also says drive power 30-40
watts for 500 out and I have never beed even close to that, usually 22-26
watts drive.

FYI,
Bill-AK5X


On Jul 8, 2020, at 6:00 AM, Eric Norris 

wrote:

I just read in the current KPA500 Manual that max heat sink temp is 90C.
Is this true for my first-year production KPA500?  I seem to remember
somethink like 75C.  I cant find my old manual.

73 Eric WD6DBM
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Re: [Elecraft] KPA500 max heat sink temp?

[Eric Norris]

Thanks, Jack!  Now the only question is, is the KPA500 a great amp, or the
greatest amp ever?  I'm in the second camp.

73.5  Eric WD6DBM

On Wed, Jul 8, 2020, 1:16 PM Jack Brindle  wrote:

> I can confirm that KPA500 V1.00 firmware, which was the first released,
> had a max temperature of 90 degrees C. This has not been changed in any
> subsequent code.
>
> As for the input power, the amplifier has improved over time. My original
> prototype KPA500 requires power in the range described (about 35 - 40
> watts), while my new one (just over a year old) needs about 20 or so watts.
> Both are great amps!
>
> 73!
> Jack, W6FB
>
>
> > On Jul 8, 2020, at 1:00 PM, William Hammond via Elecraft <
> elecraft@mailman.qth.net> wrote:
> >
> > Hi Eric, My manual (revision B, 2011) that came with my SN 0149 says 90C
> maximum, page14 in the specifications.  It also says drive power 30-40
> watts for 500 out and I have never beed even close to that, usually 22-26
> watts drive.
> >
> > FYI,
> > Bill-AK5X
> >
> >> On Jul 8, 2020, at 6:00 AM, Eric Norris 
> wrote:
> >>
> >> I just read in the current KPA500 Manual that max heat sink temp is 90C.
> >> Is this true for my first-year production KPA500?  I seem to remember
> >> somethink like 75C.  I cant find my old manual.
> >>
> >> 73 Eric WD6DBM
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Re: [Elecraft] KPA500 max heat sink temp?

[Jack Brindle via Elecraft]

I can confirm that KPA500 V1.00 firmware, which was the first released, had a 
max temperature of 90 degrees C. This has not been changed in any subsequent 
code.

As for the input power, the amplifier has improved over time. My original 
prototype KPA500 requires power in the range described (about 35 - 40 watts), 
while my new one (just over a year old) needs about 20 or so watts. Both are 
great amps!

73!
Jack, W6FB


> On Jul 8, 2020, at 1:00 PM, William Hammond via Elecraft 
>  wrote:
> 
> Hi Eric, My manual (revision B, 2011) that came with my SN 0149 says 90C 
> maximum, page14 in the specifications.  It also says drive power 30-40 watts 
> for 500 out and I have never beed even close to that, usually 22-26 watts 
> drive.  
> 
> FYI,
> Bill-AK5X
> 
>> On Jul 8, 2020, at 6:00 AM, Eric Norris  wrote:
>> 
>> I just read in the current KPA500 Manual that max heat sink temp is 90C.
>> Is this true for my first-year production KPA500?  I seem to remember
>> somethink like 75C.  I cant find my old manual.
>> 
>> 73 Eric WD6DBM
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Re: [Elecraft] KPA500 max heat sink temp?

[William Hammond via Elecraft]

Hi Eric, My manual (revision B, 2011) that came with my SN 0149 says 90C 
maximum, page14 in the specifications.  It also says drive power 30-40 watts 
for 500 out and I have never beed even close to that, usually 22-26 watts 
drive.  

FYI,
Bill-AK5X

> On Jul 8, 2020, at 6:00 AM, Eric Norris  wrote:
> 
> I just read in the current KPA500 Manual that max heat sink temp is 90C.
> Is this true for my first-year production KPA500?  I seem to remember
> somethink like 75C.  I cant find my old manual.
> 
> 73 Eric WD6DBM
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[Elecraft] OT SpectraVue 3.39 crashes

[w4sc]

Gregg

If you have had a Win10 update lately, and the “NEW” Edge browser installed,, 
well,,!!!,,. 

I had an issue about 3 weeks ago after a Win10 dll became “missing” or 
corrupted.  Reloaded C++ x86 redistrib package from MS fixed it.  This may NOT 
be your issue.  However I have noticed SpectraVue does not operate as smoothly 
as it once did, as the waterfall freezes momentarily when demod frequency is 
changed .  Its run “priority” may be low now…  I haven’t had time to look into 
this issue yet for a fix.  I don’t believe it is an issue with S’Vue S/W you 
are having.

Ben
W4SC

Sent from Mail for Windows 10

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[Elecraft] OT SpectraVue 3.39 crashes

[gregg.w6izt1]

I'm using a SDR-IQ and SpectraVue as a panadapter with my K3. I had some 
stability issues with my shack PC running Win 10 a few days ago that appear to 
have been mostly resolved with the exception of SpectraVue now crashes after 
running for a few minutes. I've uninstalled and installed the application and 
I've eliminated any possible HW issues as the cause. I hoping that someone out 
there in Elecraft land has run across this and discovered the fix that so far 
has evaded me.

Thanks in advance
73
Gregg
W6IZT

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Re: [Elecraft] WTB: *****NIFTY MANUAL FOR K2*****

[Wb9msm]

I would like to let everyone know that I contacted Nifty Manuals about the K2
Manual.  It is DISCONTINUED and is not produced any longer.  It is not
available to purchase new from them.



-
Dennis Berg
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Re: [Elecraft] Schematics for KPA500 REV "B"

[TL_Netvision]

Thanks for clarifying.

 

So what can I understand from a small white label on the board, saying this: ?


17226

0812B

OO31

 

 

I Am asking for the proper schematics because I can’t locate a certain 270 Ohm 
resistor on my physical PA board. 

This resistor appears on a “REV Ä” schematics from 02/16/11 (it’s part of the 
input attenuator I think).

 

Isaac, 4Z1TL

 

מאת: w4sc  
נשלח: Wednesday, 8 July 2020 16:28
אל: er...@netvision.net.il; elecraft@mailman.qth.net
נושא: [Elecraft] Schematics for KPA500 REV "B"

 

The “Rev” that is silkscreened on the board reflects the revision level of the 
bare board, NOT the assembly revision level of the module which will reflect 
changes made to the module and could any component, hardware, or circuit 
changes.  The module revision level should be reflected on an attached label, 
written on the pwb (i.e. “ASSY C2”) in a conspicuous location, or not(?).

 

Ben W4SC

 

Sent from Mail   for Windows 10

 



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[Elecraft] Schematics for KPA500 REV "B"

[w4sc]

You are correct in your assertions,,,  However you can/could/may have pwb 
changes to improve finished module performance, or cost, resulting in a new pwb 
with a lower rev level as its’ procurement part number would certainly change, 
and also resulting in a module assembly revision level change ( B to C?) and 
quite possibly an assembly part number and rev level change.   It is all about 
tracking, and being able to determine (hopefully) what you are looking at and 
what documentation (schematics?) to relate to.

Ben

Sent from Mail for Windows 10

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[Elecraft] Schematics for KPA500 REV "B"

[Andy Durbin]

"I have a PA board with "REV B" "silked" on it, but the schema I was supplied 
with is for "REV A". I know there are differences."

I received KPA500 schematics from Elecraft about 2 years ago.  This set 
includes sheets that are at rev C and rev D but the sheet "KPA 500 PA Module" 
is rev A.

KPA500 LPF Bank, LPF Control, and TR Switch are all rev D

I don't know the history of changes to the PA board but it would be possible to 
have a change to the PCB that did not require a change to the schematic - e.g. 
elimination of corrections made by cuts and jumpers.

If there is a later version of the sheet "KPA 500 PA Module" I would like to 
have it too.

(Pedant alert - The schematic really is titled "KPA 500" with a space, not 
"KPA500")

Andy, k3wyc
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[Elecraft] Schematics for KPA500 REV "B"

[w4sc]

The “Rev” that is silkscreened on the board reflects the revision level of the 
bare board, NOT the assembly revision level of the module which will reflect 
changes made to the module and could any component, hardware, or circuit 
changes.  The module revision level should be reflected on an attached label, 
written on the pwb (i.e. “ASSY C2”) in a conspicuous location, or not(?).

Ben W4SC

Sent from Mail for Windows 10

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[Elecraft] Schematics for KPA500 REV "B"

[TL_Netvision]

Hello all,

I have a PA board with "REV B" "silked" on it, but the schema I was supplied 
with is for  "REV A".
I know there are differences. 

Anyone has the correct schema or some errata for " REV A " please?


TIA
Isaac 

 

(FWIW – can’t tell why is it s hard to obtain a proper KPA500 
schematics? Every once in a while the question pops up & remains un-addressed.)

 



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[Elecraft] K3 For Sale (New Price!)

[ockmrzr]

FOR SALE:

 

Elecraft K3/100-F

Includes:

-KRX3 Sub-Receiver

-KSYN3A Synthesizer Board upgrade (main & sub RX)

-KAT3A 100W Automatic Antenna Tuner

-KXV3B Transverter upgrade

-KIO3B Interface upgrade

-Filters (main RX)

* KFLA3A-2.8-IR, 2.8 kHz SSB

*KFLA3A-1.0-IR, 1.0 kHz CW/DATA

*KFLA3C-400, 400 Hz CW/DATA

*KFLA3A-250-IR, 250Hz 8 Pole CW/DATA

-Filters (sub RX)

*KFLA3A-1.0-IR, 1.0 kHz CW/DATA

 

Total Package New: $5479.94.

**Photos Available

 

This is essentially a K3s!  This is a great rig for Chasing DX or
Contesting.

 

Asking $2850.00 - shipped CONUS

This price will cover shipping and PayPal fees (if used); will ship in
original Elecraft Box

 

I accept PayPal or Money Order

 

Email me directly at: ockm...@gmail.com  

 

73 de Bruce, N7TY

Yuma, AZ

www.qsl.net/n7ty  

 

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[Elecraft] KPA500 max heat sink temp?

[Eric Norris]

I just read in the current KPA500 Manual that max heat sink temp is 90C.
Is this true for my first-year production KPA500?  I seem to remember
somethink like 75C.  I cant find my old manual.

73 Eric WD6DBM
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