Re: [Elecraft] Difference between a K3 and a K3S

[ke9uw]

I bought a K3S and then I upgraded my #4XXX K3 which has two receivers with
every upgrade that Elecraft offered. It was mostly just a fun project, but
it's also a backup for the shack. One thing though, I swapped all the
filters and just put the 2.7KHz ones I got with the K3S in the K3. And I
also swapped the digital voice recorder. So I was trying to be somewhat
frugal.



-
Chuck, KE9UW
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Re: [Elecraft] Difference between a K3 and a K3S

[NJMike]

Is there a menu item that says what synthesizer is installed?

Mike, NJ2OM



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Re: [Elecraft] Difference between a K3 and a K3S

[Dave Cole]

Far worse than the K3 with the old synth in it.

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 1/25/21 5:04 PM, Wes wrote:

Yeah but... how did the Collins look?

Wes  N7WS

On 1/25/2021 5:16 PM, Dave Cole wrote:
I did something similar as well, I have a neighbor that lives around 
700 feet away, he ran a Collins S-Line.  I convinced him to buy a K3, 
which he did.


I did screen grabs of his signal with the K3, and neither of us having 
a new synth, then when he installed his, then when I installed mine... 
Big differences, all documented using the P3 at:


https://www.nk7z.net/k3/


73, and thanks,
Dave (NK7Z) 


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Re: [Elecraft] Difference between a K3 and a K3S

[Mike NJ2OM]

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Re: [Elecraft] Difference between a K3 and a K3S

[Dick Green]

What was the last K3 serial number?

73, Dick WC1M



73, Dick WC1M
> On Jan 25, 2021, at 1:46 PM, Scott Manthe  wrote:
> 
> The K3 had the new board after SN 8800.
> 
> 73,
> Scott N9AA
> 
> 
>> On 1/25/21 11:33 AM, Mike Kopacki wrote:
>> Was the KSYN3A synthesizer ever built into the K3 as a standard item?  If 
>> so, beginning at what serial number?
>> 
>> Thanks,
>> Mike NJ2OM
>> 
 On Jan 25, 2021, at 10:51 AM, Henry Pollock - K4TMC  
 wrote:
>>> 
>>> 
>>> Mike,
>>> 
>>> You can look at the numbers on Sherwood Engineering's Receiver Test Data 
>>> List, specifically the 5th, 6th and 7th items from the top, and the KX3 is 
>>> just a few items lower.
>>> 
>>> 73,
>>> Henry - K4TMC
>>> 
>>> 
>>> 
> 
> 
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Re: [Elecraft] Difference between a K3 and a K3S

[Tom]

I wonder if I can upgrade my K3,  (Sn # 53, yes 53),  to the HRO-500 
concentric knob? Anyone done that?


And yes, I have expressed interest to Elecraft for the synth upgrade.

We (K8AJ and myself) will be buying a K4, but when it shows up, um, she 
gets primary use of it.


I'll be allowed to use the K3 and any leftover antennas. So I had better 
make the K3 the best I can.



Tom K8TB


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Re: [Elecraft] Difference between a K3 and a K3S

[Bill Frantz]

When I ordered the 100W card for my K3, the one delivered was 
the one for the K3S with the bypass relay.


As you got closer to the K3S radios, a K3 you ordered would have 
the more modern cards. Kinda of a gradual upgrade.


If you hava a late serial K3, it might be worth popping the 
cover to see what is in your radio.


73 Bill AE6JV

On 1/25/21 at 8:05 PM, hullspee...@gmail.com (Warren Merkel) wrote:


Date: Mon, 25 Jan 2021 11:33:35 -0500
From: To: Henry Pollock - K4TMC
Cc: Elecraft Reflector
Subject: Re: [Elecraft] Difference between a K3 and a K3S



Was the KSYN3A synthesizer ever built into the K3 as a standard item?  If so, 
beginning at what

serial number?


Thanks,
Mike NJ2OM



Yes.  The K3 radios built right before the K3s was announced 
started coming with the KSYN3A.  Mine is #8903 and came with 
two of the new synths. (sub RX)   It also has the HPA from the 
K3s.  Kinda a Premi-K3s


Warren Merkel, KD4Z


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(408)348-7900  | it.   | 150 Rivermead 
Rd #235
www.pwpconsult.com |- Scott McNealy (1999) | Peterborough, 
NH 03458


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Re: [Elecraft] Difference between a K3 and a K3S

[Warren Merkel]

Date: Mon, 25 Jan 2021 11:33:35 -0500
From: 
To: Henry Pollock - K4TMC

Cc: Elecraft Reflector
Subject: Re: [Elecraft] Difference between a K3 and a K3S



Was the KSYN3A synthesizer ever built into the K3 as a standard item?  If so, 
beginning at what serial number?

Thanks,
Mike NJ2OM



Yes.  The K3 radios built right before the K3s was announced started 
coming with the KSYN3A.  Mine is #8903 and came with two of the new 
synths. (sub RX)   It also has the HPA from the K3s.  Kinda a Premi-K3s


Warren Merkel, KD4Z


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Re: [Elecraft] Difference between a K3 and a K3S

[Wes]

Yeah but... how did the Collins look?

Wes  N7WS

On 1/25/2021 5:16 PM, Dave Cole wrote:
I did something similar as well, I have a neighbor that lives around 700 feet 
away, he ran a Collins S-Line.  I convinced him to buy a K3, which he did.


I did screen grabs of his signal with the K3, and neither of us having a new 
synth, then when he installed his, then when I installed mine... Big 
differences, all documented using the P3 at:


https://www.nk7z.net/k3/


73, and thanks,
Dave (NK7Z) 


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Re: [Elecraft] Difference between a K3 and a K3S

[Dave Cole]

Hi,

Remember those filters are Roofing Filters, not the normal filters you 
see in a rig, and use to isolate a CW signal...


The digital filter, (you just dial the bandwidth you want from the front 
panel), in the K3 far surpasses anything I have used in the past, I get 
to very narrow bandwidths, and not a sign of ringing...


73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 1/25/21 4:05 PM, NJMike wrote:

Wow.  Thanks for all the replies!

There are some options that I don't care about, like the extended receive
range.  I would like the I/O board, DVR, 100w, ATU.

Not sure about the transverter but if I find a K3 that has it, fine.  Is the
main reason for getting the transverter option is so you can use the 144
option?

I'm using the recommendation from the Elecraft website to determine the best
choice of filters - 2.8, 2.1, 400, 250 & 200.  99% of what I do is CW and
contests.

I will sell/trade my K2/100 setup to help me make a deal!

Thanks,
Mike NJ2OM



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Re: [Elecraft] Difference between a K3 and a K3S

[Dave Cole]

I did something similar as well, I have a neighbor that lives around 700 
feet away, he ran a Collins S-Line.  I convinced him to buy a K3, which 
he did.


I did screen grabs of his signal with the K3, and neither of us having a 
new synth, then when he installed his, then when I installed mine... 
Big differences, all documented using the P3 at:


https://www.nk7z.net/k3/


73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 1/25/21 4:07 PM, David Olean wrote:
I bought a K3 SN 8858  just before the K3S was announced at Dayton. It 
had the new synthesizer. I was curious to see what the difference was 
between the two and ran a few simple tests in my alleged lab using an 
older K3 as a reference rig.  I found the new rig had a lower noise 
floor by a small amount (several dB) and was quite a bit better in close 
in reception near very strong signals. I think I saw no debilitating 
effects of a 1 milliwatt signal that was 1.00 kHz away from a very weak 
signal right near the noise floor. I was impressed!  0dBm vs -138 dBm!!


Dave K1WHS

On 1/25/2021 11:33 AM, Mike Kopacki wrote:
Was the KSYN3A synthesizer ever built into the K3 as a standard item?  
If so, beginning at what serial number?


Thanks,
Mike NJ2OM

On Jan 25, 2021, at 10:51 AM, Henry Pollock - K4TMC 
 wrote:



Mike,

You can look at the numbers on Sherwood Engineering's Receiver Test 
Data List, specifically the 5th, 6th and 7th items from the top, and 
the KX3 is just a few items lower.


73,
Henry - K4TMC



On Mon, Jan 25, 2021 at 10:29 AM NJMike  wrote:
If a K3 has been upgraded to the latest synthesizer - the KSYN3A - 
what's the

difference between it and the K3S?

Thanks,
Mike NJ2OM



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Re: [Elecraft] Difference between a K3 and a K3S

[David Olean]

I bought a K3 SN 8858  just before the K3S was announced at Dayton. It 
had the new synthesizer. I was curious to see what the difference was 
between the two and ran a few simple tests in my alleged lab using an 
older K3 as a reference rig.  I found the new rig had a lower noise 
floor by a small amount (several dB) and was quite a bit better in close 
in reception near very strong signals. I think I saw no debilitating 
effects of a 1 milliwatt signal that was 1.00 kHz away from a very weak 
signal right near the noise floor. I was impressed!  0dBm vs -138 dBm!!


Dave K1WHS

On 1/25/2021 11:33 AM, Mike Kopacki wrote:

Was the KSYN3A synthesizer ever built into the K3 as a standard item?  If so, 
beginning at what serial number?

Thanks,
Mike NJ2OM


On Jan 25, 2021, at 10:51 AM, Henry Pollock - K4TMC  wrote:


Mike,

You can look at the numbers on Sherwood Engineering's Receiver Test Data List, 
specifically the 5th, 6th and 7th items from the top, and the KX3 is just a few 
items lower.

73,
Henry - K4TMC



On Mon, Jan 25, 2021 at 10:29 AM NJMike  wrote:
If a K3 has been upgraded to the latest synthesizer - the KSYN3A - what's the
difference between it and the K3S?

Thanks,
Mike NJ2OM



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Re: [Elecraft] Difference between a K3 and a K3S

[NJMike]

Wow.  Thanks for all the replies!

There are some options that I don't care about, like the extended receive
range.  I would like the I/O board, DVR, 100w, ATU.

Not sure about the transverter but if I find a K3 that has it, fine.  Is the
main reason for getting the transverter option is so you can use the 144
option?

I'm using the recommendation from the Elecraft website to determine the best
choice of filters - 2.8, 2.1, 400, 250 & 200.  99% of what I do is CW and
contests.

I will sell/trade my K2/100 setup to help me make a deal!

Thanks,
Mike NJ2OM



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Re: [Elecraft] Difference between a K3 and a K3S

[Barry Simpson]

I bought everything to upgrade my 2008 dual receiver K3 to pseudo K3S
status including a K3S style rubber ring for the main tuning knob 😊👍.

Barry  VK2BJ

On Tue, 26 Jan 2021 at 09:10, Charlie T  wrote:

> There a LOT of differences between the K3 and the K3S.
> Many are minor improvements but some are major.
> Built in low noise 6M pre-amp for one. You don't have to buy the outboard
> unit.
> Somewhere I made a list of them all when I was considering whether to
> upgrade my K3 or buy a new K3S.
> After looking at all the pluses, I went with the new radio.
> Also, many of the K3 options will work in the new K3S too, so I basically
> bought a bare-bones K3S-100W version and swapped the filters etc.
>
> 73, Charlie k3ICH
>
>
>
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net 
> On
> Behalf Of AB1DD
> Sent: Monday, January 25, 2021 1:03 PM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] Difference between a K3 and a K3S
>
> I think it was, but have no idea what the starting S/N was. It was near the
> end of the K3 run.
>
> 73,
> Carl
> AB1DD
>
> Resistance is futile.
> (don't know about reactance, though)
>
>
> On 1/25/2021 11:33 AM, Mike Kopacki wrote:
> > Was the KSYN3A synthesizer ever built into the K3 as a standard item?  If
> so, beginning at what serial number?
> >
> > Thanks,
> > Mike NJ2OM
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Re: [Elecraft] Difference between a K3 and a K3S

[Rajiv Dewan]

I have an early K3 that I fully upgraded, including the KXV3B board that has 
the 6m preamp. 

I understand that the DSP and associated audio boards, and the RF boards also 
have upgraded circuits between the K3 and the K3s. 

Raj, N2RD

Sent from my iPad

> On Jan 25, 2021, at 5:11 PM, Charlie T  wrote:
> 
> There a LOT of differences between the K3 and the K3S.
> Many are minor improvements but some are major.
> Built in low noise 6M pre-amp for one. You don't have to buy the outboard
> unit.
> Somewhere I made a list of them all when I was considering whether to
> upgrade my K3 or buy a new K3S.
> After looking at all the pluses, I went with the new radio.
> Also, many of the K3 options will work in the new K3S too, so I basically
> bought a bare-bones K3S-100W version and swapped the filters etc.
> 
> 73, Charlie k3ICH
> 
> 
> 
> 
> -Original Message-
> From: elecraft-boun...@mailman.qth.net  On
> Behalf Of AB1DD
> Sent: Monday, January 25, 2021 1:03 PM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] Difference between a K3 and a K3S
> 
> I think it was, but have no idea what the starting S/N was. It was near the
> end of the K3 run.
> 
> 73,
> Carl
> AB1DD
> 
> Resistance is futile.
> (don't know about reactance, though)
> 
> 
>> On 1/25/2021 11:33 AM, Mike Kopacki wrote:
>> Was the KSYN3A synthesizer ever built into the K3 as a standard item?  If
> so, beginning at what serial number?
>> 
>> Thanks,
>> Mike NJ2OM
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Re: [Elecraft] Difference between a K3 and a K3S

[Charlie T]

There a LOT of differences between the K3 and the K3S.
Many are minor improvements but some are major.
Built in low noise 6M pre-amp for one. You don't have to buy the outboard
unit.
Somewhere I made a list of them all when I was considering whether to
upgrade my K3 or buy a new K3S.
After looking at all the pluses, I went with the new radio.
Also, many of the K3 options will work in the new K3S too, so I basically
bought a bare-bones K3S-100W version and swapped the filters etc.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of AB1DD
Sent: Monday, January 25, 2021 1:03 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Difference between a K3 and a K3S

I think it was, but have no idea what the starting S/N was. It was near the
end of the K3 run.

73,
Carl
AB1DD

Resistance is futile.
(don't know about reactance, though)


On 1/25/2021 11:33 AM, Mike Kopacki wrote:
> Was the KSYN3A synthesizer ever built into the K3 as a standard item?  If
so, beginning at what serial number?
>
> Thanks,
> Mike NJ2OM
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Re: [Elecraft] Difference between a K3 and a K3S

[Tom Azlin W7SUA]

I agree.

My sort of early K3 ( s/n 17xx) simply has received every possible 
upgrade put including the new synth board and the new I/O board. So is 
pretty close to the K3S seems to me. If I was unlucky enough to have 
purchased the last K3 I would have simply put in all the upgrades. Both 
are worthy radios. My K3 is a field day veteran on a 4A club and did 
very well with nearby K3 stations ( we did an all Elecraft FD with a K2 
and multiple K3s. With antenna gain on 40 and 20.)


73, tom w7sua

On 1/25/2021 12:00 PM, Tim Tucker wrote:

The new I/O board was also an option that was sold separately as an upgrade
to the K3, as was the KXV3B, where the pre-amp was located.  If you find a
K3 with all those upgrades plus the synth (like mine ;), it's pretty close
to the same thing as the K3S.

On Mon, Jan 25, 2021 at 7:48 AM AB1DD  wrote:


Mike,

You don't get the new knob and bezel!

Seriously, You don't have the new i/o board, with it's sound card built
in and USB connectivity. There are a couple other things changed on the
mother board that you can't get anyway with out buying a K3S. They
weren't showstoppers for me. There is a second preamp, more att. levels,
built it ATU will bypass, better speaker amp, Fast rx/tx switching,
extended 630 and 2200 meter bands. There might be more that I can't
remember, but the synth and i/o board are the biggest. There was a chart
on the Elecraft website but I don't know where it is now.

Hope this helps

73,
Carl
AB1DD

Resistance is futile.
(don't know about reactance, though)



On 1/25/2021 10:29 AM, NJMike wrote:

If a K3 has been upgraded to the latest synthesizer - the KSYN3A -

what's the

difference between it and the K3S?

Thanks,
Mike NJ2OM



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Re: [Elecraft] Difference between a K3 and a K3S

[Ronnie Hull]

Yes me too I had barely unboxed my K3 and there it was the K3S. I came away 
feeling like I had been... well you know...

Sent from my iPhone

> On Jan 25, 2021, at 2:00 PM, James F. Boehner MD via Elecraft 
>  wrote:
> 
> I had the unfortunate timing of ordering a K3 about 2 months before the K3s
> came out.  My serial is 8964 and I have the new synthesizers which were
> factory installed.  I believe the K3s started at serial number 10,000.
> 
> '73 de JIM N2ZZ
> 
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of AB1DD
> Sent: Monday, January 25, 2021 1:03 PM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] Difference between a K3 and a K3S
> 
> I think it was, but have no idea what the starting S/N was. It was near 
> the end of the K3 run.
> 
> 73,
> Carl
> AB1DD
> 
> Resistance is futile.
> (don't know about reactance, though)
> 
> 
>> On 1/25/2021 11:33 AM, Mike Kopacki wrote:
>> Was the KSYN3A synthesizer ever built into the K3 as a standard item?  If
> so, beginning at what serial number?
>> 
>> Thanks,
>> Mike NJ2OM
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Re: [Elecraft] Difference between a K3 and a K3S

[James F. Boehner MD via Elecraft]

I had the unfortunate timing of ordering a K3 about 2 months before the K3s
came out.  My serial is 8964 and I have the new synthesizers which were
factory installed.  I believe the K3s started at serial number 10,000.

'73 de JIM N2ZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of AB1DD
Sent: Monday, January 25, 2021 1:03 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Difference between a K3 and a K3S

I think it was, but have no idea what the starting S/N was. It was near 
the end of the K3 run.

73,
Carl
AB1DD

Resistance is futile.
(don't know about reactance, though)


On 1/25/2021 11:33 AM, Mike Kopacki wrote:
> Was the KSYN3A synthesizer ever built into the K3 as a standard item?  If
so, beginning at what serial number?
>
> Thanks,
> Mike NJ2OM
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Re: [Elecraft] Difference between a K3 and a K3S

[Tim Tucker]

The new I/O board was also an option that was sold separately as an upgrade
to the K3, as was the KXV3B, where the pre-amp was located.  If you find a
K3 with all those upgrades plus the synth (like mine ;), it's pretty close
to the same thing as the K3S.

On Mon, Jan 25, 2021 at 7:48 AM AB1DD  wrote:

> Mike,
>
> You don't get the new knob and bezel!
>
> Seriously, You don't have the new i/o board, with it's sound card built
> in and USB connectivity. There are a couple other things changed on the
> mother board that you can't get anyway with out buying a K3S. They
> weren't showstoppers for me. There is a second preamp, more att. levels,
> built it ATU will bypass, better speaker amp, Fast rx/tx switching,
> extended 630 and 2200 meter bands. There might be more that I can't
> remember, but the synth and i/o board are the biggest. There was a chart
> on the Elecraft website but I don't know where it is now.
>
> Hope this helps
>
> 73,
> Carl
> AB1DD
>
> Resistance is futile.
> (don't know about reactance, though)
>
>
>
> On 1/25/2021 10:29 AM, NJMike wrote:
> > If a K3 has been upgraded to the latest synthesizer - the KSYN3A -
> what's the
> > difference between it and the K3S?
> >
> > Thanks,
> > Mike NJ2OM
> >
> >
> >
> > --
> >
> __
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>


-- 
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AE6LX, Amateur Radio
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Re: [Elecraft] Difference between a K3 and a K3S

[Scott Manthe]

The K3 had the new board after SN 8800.

73,
Scott N9AA


On 1/25/21 11:33 AM, Mike Kopacki wrote:

Was the KSYN3A synthesizer ever built into the K3 as a standard item?  If so, 
beginning at what serial number?

Thanks,
Mike NJ2OM


On Jan 25, 2021, at 10:51 AM, Henry Pollock - K4TMC  wrote:


Mike,

You can look at the numbers on Sherwood Engineering's Receiver Test Data List, 
specifically the 5th, 6th and 7th items from the top, and the KX3 is just a few 
items lower.

73,
Henry - K4TMC





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Re: [Elecraft] Difference between a K3 and a K3S

[AB1DD]

I think it was, but have no idea what the starting S/N was. It was near 
the end of the K3 run.


73,
Carl
AB1DD

Resistance is futile.
(don't know about reactance, though)


On 1/25/2021 11:33 AM, Mike Kopacki wrote:

Was the KSYN3A synthesizer ever built into the K3 as a standard item?  If so, 
beginning at what serial number?

Thanks,
Mike NJ2OM

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Re: [Elecraft] Difference between a K3 and a K3S

[Mike Kopacki]

Was the KSYN3A synthesizer ever built into the K3 as a standard item?  If so, 
beginning at what serial number?

Thanks,
Mike NJ2OM 

> On Jan 25, 2021, at 10:51 AM, Henry Pollock - K4TMC  
> wrote:
> 
> 
> Mike,
> 
> You can look at the numbers on Sherwood Engineering's Receiver Test Data 
> List, specifically the 5th, 6th and 7th items from the top, and the KX3 is 
> just a few items lower.
> 
> 73,
> Henry - K4TMC
> 
> 
>> On Mon, Jan 25, 2021 at 10:29 AM NJMike  wrote:
>> If a K3 has been upgraded to the latest synthesizer - the KSYN3A - what's the
>> difference between it and the K3S?
>> 
>> Thanks,
>> Mike NJ2OM
>> 
>> 
>> 
>> --
>> Sent from: http://elecraft.365791.n2.nabble.com/
>> __
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Re: [Elecraft] Difference between a K3 and a K3S

[Wes]

The K3 has a bipolar HPA, the K3S is FET.  In my case the bipolar is more 
reliable and has lower TX IMD.


Wes  N7WS


On 1/25/2021 8:48 AM, AB1DD wrote:

Mike,

You don't get the new knob and bezel!

Seriously, You don't have the new i/o board, with it's sound card built in and 
USB connectivity. There are a couple other things changed on the mother board 
that you can't get anyway with out buying a K3S. They weren't showstoppers for 
me. There is a second preamp, more att. levels, built it ATU will bypass, 
better speaker amp, Fast rx/tx switching, extended 630 and 2200 meter bands. 
There might be more that I can't remember, but the synth and i/o board are the 
biggest. There was a chart on the Elecraft website but I don't know where it 
is now.


Hope this helps

73,
Carl
AB1DD

Resistance is futile.
(don't know about reactance, though)



On 1/25/2021 10:29 AM, NJMike wrote:

If a K3 has been upgraded to the latest synthesizer - the KSYN3A - what's the
difference between it and the K3S?

Thanks,
Mike NJ2OM



--


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Re: [Elecraft] Difference between a K3 and a K3S

[AB1DD]

Sorry, the below att levels should have been Preamp levels, and the ATU 
should be built in! Need another cup of coffee.


73,
Carl
AB1DD

Resistance is futile.
(don't know about reactance, though)

On 1/25/2021 10:48 AM, AB1DD wrote:

Mike,

You don't get the new knob and bezel!

Seriously, You don't have the new i/o board, with it's sound card 
built in and USB connectivity. There are a couple other things changed 
on the mother board that you can't get anyway with out buying a K3S. 
They weren't showstoppers for me. There is a second preamp, more att. 
levels, built it ATU will bypass, better speaker amp, Fast rx/tx 
switching, extended 630 and 2200 meter bands. There might be more that 
I can't remember, but the synth and i/o board are the biggest. There 
was a chart on the Elecraft website but I don't know where it is now.


Hope this helps

73,
Carl
AB1DD

Resistance is futile.
(don't know about reactance, though)





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Re: [Elecraft] Difference between a K3 and a K3S

[Henry Pollock - K4TMC]

Mike,

You can look at the numbers on Sherwood Engineering's Receiver Test Data
List, specifically the 5th, 6th and 7th items from the top, and the KX3 is
just a few items lower.

73,
Henry - K4TMC


On Mon, Jan 25, 2021 at 10:29 AM NJMike  wrote:

> If a K3 has been upgraded to the latest synthesizer - the KSYN3A - what's
> the
> difference between it and the K3S?
>
> Thanks,
> Mike NJ2OM
>
>
>
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
> __
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Re: [Elecraft] Difference between a K3 and a K3S

[AB1DD]

Mike,

You don't get the new knob and bezel!

Seriously, You don't have the new i/o board, with it's sound card built 
in and USB connectivity. There are a couple other things changed on the 
mother board that you can't get anyway with out buying a K3S. They 
weren't showstoppers for me. There is a second preamp, more att. levels, 
built it ATU will bypass, better speaker amp, Fast rx/tx switching, 
extended 630 and 2200 meter bands. There might be more that I can't 
remember, but the synth and i/o board are the biggest. There was a chart 
on the Elecraft website but I don't know where it is now.


Hope this helps

73,
Carl
AB1DD

Resistance is futile.
(don't know about reactance, though)



On 1/25/2021 10:29 AM, NJMike wrote:

If a K3 has been upgraded to the latest synthesizer - the KSYN3A - what's the
difference between it and the K3S?

Thanks,
Mike NJ2OM



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[Elecraft] Difference between a K3 and a K3S

[NJMike]

If a K3 has been upgraded to the latest synthesizer - the KSYN3A - what's the
difference between it and the K3S?

Thanks,
Mike NJ2OM



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Re: [Elecraft] Difference in dummy loads

[CUTTER DAVID via Elecraft]

Buyer beware.  
I bought a superb, almost new, almost unused Bird 8141, in its original box and 
it failed after a short while.  Taking it apart it was obvious that it had been 
well and truly cooked.  It must have been hammered.  The main connection had 
corroded and separated from the element.  I have photos.  The solution was 
exceedingly cheap and easy: separate the parts from the body, wash with IPA 
etc, sit contact parts in tomato ketchup for a couple of hours, clean up and 
re-assemble.  

David G3UNA/G6CP

> On 02 July 2020 at 18:16 Edward R Cole  wrote:
> 
> 
> I bought an air-cooled Bird 8201 rated 500w to 3-GHz from e-bay for 
> $300.  It can handle 1500w for short transmissions.
> 
> 73, Ed - KL7UW
>http://www.kl7uw.com
> Dubus-NA Business mail:
>dubus...@gmail.com 
> 
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Re: [Elecraft] Difference in dummy loads

[Edward R Cole]

I bought an air-cooled Bird 8201 rated 500w to 3-GHz from e-bay for 
$300.  It can handle 1500w for short transmissions.


73, Ed - KL7UW
  http://www.kl7uw.com
Dubus-NA Business mail:
  dubus...@gmail.com 


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Re: [Elecraft] Difference in dummy loads

[Walter Underwood]

> On Jul 2, 2020, at 3:42 AM, NW0M  wrote:
> 
> Don't over-think this one.  For 98% of us hams the MFJ dummy loads will work
> fine.  
> 
> The MFJ-260C is rated at 300 watts and sells for $50.

Looking at the rating curve in the manual, that is 300 W for 30 seconds or 100 
W for 90 seconds.

For $50, I’d still go with the Oak Hills Research kit. That handles 100 W 
continuous, no time limit. http://www.ohr.com/rfl100.htm

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

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Re: [Elecraft] Difference in dummy loads

[Mike Kopacki]

I ordered the MFJ-260C. Thanks for all the replies!

Thanks,
Mike NJ2OM 

> On Jul 2, 2020, at 6:44 AM, NW0M  wrote:
> 
> Hi Mike,
> 
> Don't over-think this one.  For 98% of us hams the MFJ dummy loads will work
> fine.  
> 
> The MFJ-260C is rated at 300 watts and sells for $50.
> 
> The MFJ-264 is rated for 1500 watts (an Ohio vendor sells it for $80) if you
> think an amplifier is in your future plans.  
> 
> 73, Mitch
> 
> 
> 
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] Difference in dummy loads

[NW0M]

Hi Mike,

Don't over-think this one.  For 98% of us hams the MFJ dummy loads will work
fine.  

The MFJ-260C is rated at 300 watts and sells for $50.

The MFJ-264 is rated for 1500 watts (an Ohio vendor sells it for $80) if you
think an amplifier is in your future plans.  

73, Mitch



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Re: [Elecraft] Difference in dummy loads

[Bill Frantz]

I have a MFJ-264 which is rated for 100W more or less 
continuously and 1500W for 10 seconds. It seems to work within 
its specs. I've used it at up to 1KW or so.


I assume it is like most MFJ equipment, it does what it is 
specified to do, but don't push it even a little bit beyond.


73 Bill AE6JV

---
Bill Frantz| There's nothing so clear| Periwinkle
(408)348-7900  | as a design you haven't | 150 Rivermead 
Rd #235
www.pwpconsult.com | written down. - Dean Tribble| Peterborough, 
NH 03458


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Re: [Elecraft] Difference in dummy loads

[Ken WA8JXM]

The difference between a "dry" and an "air cooled"?  I think they are the
same.  The difference is with "oil cooled".  Heathkit used to sell a
"Cantenna" which was a dummy load in a gallon paint can.  Add your own
transformer oil.  IIRC it was rated for a KW for a short period.

Ken WA8JXM

On Wed, Jul 1, 2020 at 5:45 PM NJMike  wrote:

> I need to purchase a dummy load for use with my K2/100.  What's the
> difference between a dry dummy load and an air cooled dummy load?  Which is
> better?
>
> Thanks,
> Mike NJ2OM
>
>
>
> --
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Re: [Elecraft] Difference in dummy loads

[Don Wilhelm]

A dry dummy load is good for up to its power rating - but do not exceed 
that rating.  The air cooled dummy loads not only require power for the 
fan, but may be over-rated for their power spec.


I prefer dry or oil immersed dummy loads.

A good dummy load should present a 1.0 SWR for all the bands of 
interest.  Check with an antenna analyzer.  If you have access to a 
vector analyzer, it should show 50 ohms resistive and zero reactance at 
all frequencies of interest.


Those home-built with resistors can usually be OK up through 30 MHz, but 
may fail at 50 MHz and above - and that includes the 'cantenna' types 
(oil immersed resistors).  careful construction is required to reduce 
the inductance involved in the mounting and assembly.


I have 3 'cantenna' type dummy loads, two for 150 watts In quart cans 
and one for 1000 watts in a gallon can.  They are OK up through 30 MHz, 
but not above that level.
They are good for loads on the transmitter, but are not sufficient for 
precise measurement.


I also have 2 precision dummy loads that are good up into the GHz 
region.  Those are the ones that I use for measurements (up to 100 
watts) And for the K3 TX Gain calibration.  I have another that I rate 
at 50 watts (using a 100 watt Caddock thick film resistor on a heatsink) 
that is a good load up through 220 MHz.


None of mine are air cooled.

73,
Don W3FPR

On 7/1/2020 7:45 PM, Eric Norris wrote:

Basically the same thing.  I suggest the Vectronics DL-650 (dx engineering)
or a commercial pull from Ridge Equipment.  For serious testing, I fire up
my 2GHz, 6kW water-cooled dummy load--louder than 10 KPA-1500s on PCP.

Always get more capacity than you need. --because you'll need it later.  If
you get an amp, a high power dummy load is essential for tracking down
possible RFI.  I keep a 50-watt dummy load on ANT2 of the K3S for a quick
TXGN CAL, and a DL-2500 on ANT2 of the KPA1500.  But then, I love the smell
of a hot dummy load in the morning.  It smells like...radio.

73 Eric WD6DBM

On Wed, Jul 1, 2020, 2:44 PM NJMike  wrote:


I need to purchase a dummy load for use with my K2/100.  What's the
difference between a dry dummy load and an air cooled dummy load?  Which is
better?

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Re: [Elecraft] Difference in dummy loads

[Eric Norris]

Basically the same thing.  I suggest the Vectronics DL-650 (dx engineering)
or a commercial pull from Ridge Equipment.  For serious testing, I fire up
my 2GHz, 6kW water-cooled dummy load--louder than 10 KPA-1500s on PCP.

Always get more capacity than you need. --because you'll need it later.  If
you get an amp, a high power dummy load is essential for tracking down
possible RFI.  I keep a 50-watt dummy load on ANT2 of the K3S for a quick
TXGN CAL, and a DL-2500 on ANT2 of the KPA1500.  But then, I love the smell
of a hot dummy load in the morning.  It smells like...radio.

73 Eric WD6DBM

On Wed, Jul 1, 2020, 2:44 PM NJMike  wrote:

> I need to purchase a dummy load for use with my K2/100.  What's the
> difference between a dry dummy load and an air cooled dummy load?  Which is
> better?
>
> Thanks,
> Mike NJ2OM
>
>
>
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] Difference in dummy loads

[Mike Kopacki]

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Re: [Elecraft] Difference in dummy loads

[Walter Underwood]

An air-cooled dry dummy load is just fine for 100 W. I like the Oak Hills 
Research RFL-100 kit. $50 and easy to build. It uses twenty 5 W resistors.

http://www.ohr.com/rfl100.htm

I wrote up my build of that kit here.

https://observer.wunderwood.org/2016/12/31/building-a-dummy-load/

If you want to buy instead of build, I’d look at one of the used Bird dummy 
loads listed here. There are other sites, but this one seems to have a good 
selection.

https://www.nm3e.com/loadSampler.htm#LoadSampler

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

> On Jul 1, 2020, at 2:44 PM, NJMike  wrote:
> 
> I need to purchase a dummy load for use with my K2/100.  What's the
> difference between a dry dummy load and an air cooled dummy load?  Which is
> better?
> 
> Thanks,
> Mike NJ2OM
> 
> 
> 
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
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[Elecraft] Difference in dummy loads

[NJMike]

I need to purchase a dummy load for use with my K2/100.  What's the
difference between a dry dummy load and an air cooled dummy load?  Which is
better?

Thanks,
Mike NJ2OM



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Re: [Elecraft] Difference in DSP in K2 and K3S

[Don Wilhelm]

Paul,

Comparing the technical side of the K2 DSP NR with the K3 NR is like 
comparing apples and oranges.

The KDSP2 is DSP added at audio, while the K3 NR is done at the 15kHz IF.
The K3 offers many more settings that are available with the K2 DSP, so 
I encourage you to experiment some more.


The way the NR algorithm works is that the DSP searches for what it 
believes to be a correlated signal and builds a filter around that 
signal.  That may result in the 'robotic' voices that you mention.


Not all noises are the same, and you may have to find the settings that 
deal most effectively with your particular noise - as I indicated, 
experimentation may be necessary.  You should look at the manual page 
dealing with "Reducing Interference and Noise" for some clues and 
cautions about NR.  Check to see if Noise Blanking might be more 
effective than NR for the type of noise you are dealing with.  A 
combination of the two can also be used if that should help.


73,
Don W3FPR

On 6/7/2016 5:16 PM, Paul Wilton wrote:

I have been using a K3S in a 2m SSB VHF contest this evening and find that the 
DSP NR is a bit a disappointment compared with my usual K2 rig.  My QTH has a 
fair degree on man-made noise so on the K2, I normally run with the NR at level 
4 (factory settings - I haven’t adjusted them).  However, when using the NR on 
the K3S this evening, when I adjusted it to get a similar amount of noise 
reduction, I find that is accompanied by a lot of swooshing noise modulated 
with an interval of between 0.5 to 3seconds.  Also, the voices seem a lot more 
robotic and harder to understand.

I did try all of the NR settings but didn’t really find one which matched the 
niceness of the K2.  Has anyone else progressed from a K2 to a K3 on VHF and 
would like to comment on the effectiveness of the NR?  And more importantly, 
are there some settings I can try to get the K3S to sound like my K2?



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Re: [Elecraft] Difference in DSP in K2 and K3S

[John Stengrevics]

If anyone has a moment to provide instructions on how best to adjust the NR, I 
would appreciate it as well.

73,

John
WA1EAZ

> On Jun 7, 2016, at 5:16 PM, Paul Wilton  wrote:
> 
> I have been using a K3S in a 2m SSB VHF contest this evening and find that 
> the DSP NR is a bit a disappointment compared with my usual K2 rig.  My QTH 
> has a fair degree on man-made noise so on the K2, I normally run with the NR 
> at level 4 (factory settings - I haven’t adjusted them).  However, when using 
> the NR on the K3S this evening, when I adjusted it to get a similar amount of 
> noise reduction, I find that is accompanied by a lot of swooshing noise 
> modulated with an interval of between 0.5 to 3seconds.  Also, the voices seem 
> a lot more robotic and harder to understand.
> 
> I did try all of the NR settings but didn’t really find one which matched the 
> niceness of the K2.  Has anyone else progressed from a K2 to a K3 on VHF and 
> would like to comment on the effectiveness of the NR?  And more importantly, 
> are there some settings I can try to get the K3S to sound like my K2?
> 
> 
> 73
> 
> Paul
> M1CNK
> 
> 
> 
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[Elecraft] Difference in DSP in K2 and K3S

[Paul Wilton]

I have been using a K3S in a 2m SSB VHF contest this evening and find that the 
DSP NR is a bit a disappointment compared with my usual K2 rig.  My QTH has a 
fair degree on man-made noise so on the K2, I normally run with the NR at level 
4 (factory settings - I haven’t adjusted them).  However, when using the NR on 
the K3S this evening, when I adjusted it to get a similar amount of noise 
reduction, I find that is accompanied by a lot of swooshing noise modulated 
with an interval of between 0.5 to 3seconds.  Also, the voices seem a lot more 
robotic and harder to understand.

I did try all of the NR settings but didn’t really find one which matched the 
niceness of the K2.  Has anyone else progressed from a K2 to a K3 on VHF and 
would like to comment on the effectiveness of the NR?  And more importantly, 
are there some settings I can try to get the K3S to sound like my K2?


73

Paul
M1CNK



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Re: [Elecraft] Difference

[Rick Tavan]

...and many of the improvements in the K3S can be retrofitted into a K3.
Elecraft has been superb in maintaining compatibility through its product
evolution.

/Rick N6XI

On Tue, Jan 19, 2016 at 7:48 PM, Nr4c  wrote:

> Check the website for mods and I think you'll find that virtually all the
> hardware mods and updates can be added to every vintage K3 up to April of
> 2015 when it was replaced by the K3S.
>
> Sent from my iPad
> ...bc nr4c
>
> > On Jan 19, 2016, at 10:27 PM, Gary Travis Roberts <
> gtrobe...@aggiemail.usu.edu> wrote:
> >
> > Is there a difference between and early version of the K3 and a later
> version?  Just wondering if it is not updatable, etc.
> >
> >   Gary, AG1T
> >
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>



-- 

Rick Tavan
Truckee, CA
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Re: [Elecraft] Difference

[Rose]

Yes, all K3's can be upgraded to the  point where the K3s was introduced.
My K3 S/N 0056 has been updated to the last configuration available.

73 - K0PP
On Jan 19, 2016 20:28, "Gary Travis Roberts" 
wrote:

> Is there a difference between and early version of the K3 and a later
> version?  Just wondering if it is not updatable, etc.
>
>Gary, AG1T
>
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Re: [Elecraft] Difference

[Nr4c]

Check the website for mods and I think you'll find that virtually all the 
hardware mods and updates can be added to every vintage K3 up to April of 2015 
when it was replaced by the K3S. 

Sent from my iPad
...bc nr4c

> On Jan 19, 2016, at 10:27 PM, Gary Travis Roberts 
>  wrote:
> 
> Is there a difference between and early version of the K3 and a later 
> version?  Just wondering if it is not updatable, etc.
> 
>   Gary, AG1T
> 
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[Elecraft] Difference

[Gary Travis Roberts]

Is there a difference between and early version of the K3 and a later version?  
Just wondering if it is not updatable, etc.

   Gary, AG1T

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Re: [Elecraft] Difference between K2 rev. A & B

[Sverre Holm (LA3ZA)]

Hi Björn,

You can also take a look at my "Unofficial Guide to Elecraft K2
Modifications" at the address 
http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2.html
  .

It has a section describing the serial number 3000+ modifications in an
alternative view compared to the Elecraft document. It also adds some minor
modifications taken from a comparison between the schematics, and offers
some of the background for the 3000+ modifications as well.

I have just moved the "Unofficial Guide to Elecraft K2 Modifications" to a
new address and done some slight updating, especially with respect to some
of the old missing links. More updating will take place in the days and
weeks to come. BTW, old links will automatically be forwarded to the new
address.





-
Sverre, LA3ZA

K2 #2198, K3 #3391,
LA3ZA Blog: http://la3za.blogspot.com,
LA3ZA Unofficial Guide to K2 modifications: 
http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2.html
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Re: [Elecraft] Difference between K2 rev. A & B

[Don Wilhelm]

Bjoern,

The best description is in the K2 A to B instruction manual, so I would 
suggest you download that and do a physical examination of your K2 to 
see whether the upgrades have been done or not.
The A to B instructions also list several other associated upgrade mods, 
so you might want to download those mod instructions as well.


Many early K2s have been upgraded, while others have a few select 
upgrade mods installed, so without the complete documentation to check 
the status of your K2, it is difficult to tell.


The boards were modified to include the upgrade mods at SN 3000, but the 
earlier boards can be fully upgraded.


73,
Don W3FPR

On 8/1/2013 11:28 AM, DL2NEP wrote:

Hi,

can someone explain me the difference between A&B? Is it nessesary to upgrade a 
A to B?
I bought a used K2 with #14xx. So I expect rev. A.



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[Elecraft] Difference between K2 rev. A & B

[DL2NEP]

Hi,

can someone explain me the difference between A&B? Is it nessesary to upgrade a 
A to B?
I bought a used K2 with #14xx. So I expect rev. A.

vy 73 de Bjoern

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Re: [Elecraft] Difference between ATU's ???

[Leigh L Klotz, Jr.]

Perhaps I should take my spreadsheet down now that Elecraft has their 
real order form up.  Thank you for pointing out the error...the last 
thing I want to do is cause confusion.


Maybe my next project will be a filter-chooser wizard!

73,
Leigh/WA5ZNU
On Sat, 5 May 2007 4:07 pm, Dave G. wrote:

Ken,

Thank you. I was still referring to the "Spread Sheet" put up by
wa5znu...

Dave KK7SS


 If you check the Elecraft web site order form, you will find that they
 fixed that.



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Re: [Elecraft] Difference between ATU's ???

[Dave G.]

Ken,

Thank you. I was still referring to the "Spread Sheet" put up by 
wa5znu...

Dave KK7SS

> If you check the Elecraft web site order form, you will find that they
> fixed that.


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Re: [Elecraft] Difference between ATU's ???

[Vic K2VCO]

Dave G. wrote:

Looking at the Pricing Sheet

What is the difference between;
Internal ATU w/2nd Ant. Jack @ $259, and
100-W Internal ATU, Installed @ $289...

Does that imply that the "ATU w/@nd Ant" will not handle 100W??


Looks to me that the difference is between the 'no-solder kit' version 
and the fully assembled version.

--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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[Elecraft] Difference between ATU's ???

[Dave G.]

Looking at the Pricing Sheet

What is the difference between;
Internal ATU w/2nd Ant. Jack @ $259, and
100-W Internal ATU, Installed @ $289...

Does that imply that the "ATU w/@nd Ant" will not handle 100W??

Dave KK7SS


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[Elecraft] Difference between "real" filters (FL1 thru FL4) and DSP filters (SF1 thru SF4)

[John Wiener]

I have been playing with the KDSP2 on my K2 and was wondering if the  
DSP filters are significantly different in their effects than the  
effects of filters FL1 thru FL4.

To me, they seem a bit redundant, in terms of audio effect on listening.

Noise reduction is remarkable when activated...still learning how to  
use it for SSB, however.
I haven't seen the effects of the notch filter yet...is that supposed  
to eliminate adjacent carriers?


John
AB8O
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