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SSB at something more then 2.2kHz?

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Frank Krozel

SSB at something more then 2.2kHz?

OK, pondering this after listening on the K2 to SSB tonight…. Has anyone tried to align the SSB module to get something more then 2.2kHz?
I was thinking of 2.4, 2.0, 1.7 as my filters when I get the SSB module.
Frank KG9H

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Phil Wheeler-2

Re: SSB at something more then 2.2kHz?

I think there's a tech note on that, Frank. My
recollection is that there was a mod to broaden
SSB a bit. Look here and see what you find
http://www.elecraft.com/Apps/ksb2_ssb_adapter_notes_and_alert.htm

The need for some of these may be S/N dependent --
and depend also on what the previous owner did
(e.g., my K2 is #380 but it has most of the mods
developed since, a few added this year).

73, Phil W7OX

On 12/6/14 6:09 PM, Frank Krozel wrote:
> OK, pondering this after listening on the K2 to SSB tonight…. Has anyone tried to align the SSB module to get something more then 2.2kHz?
> I was thinking of 2.4, 2.0, 1.7 as my filters when I get the SSB module.
> Frank KG9H

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Don Wilhelm-4

Re: SSB at something more then 2.2kHz?

In reply to this post by Frank Krozel

Frank,

Do you have the KSB2 option installed in that K2?
If so, the SSB FL1 filter should be set to "OP1" instead of "2.2".

If you do have the KSB2 option, look at the board. First check the
markings on the crystals
If they are 4913-S you have the new crystals on that board.
Then see if there are capacitors in the CB and CN locations. If not,
the width is the newer 2.4kHz, but if you do not have capacitors there,
you can order the K2SSBCAPKT and change the width to 2.4kHz (or even
2.6kHz if your BFO range is sufficient). You must have the 4913-S
crystals installed to take advantage of that increased filter width.
New KSB2 options come with capacitors for the 2.4kHz width.

73,
Don W3FPR

On 12/6/2014 9:09 PM, Frank Krozel wrote:

> OK, pondering this after listening on the K2 to SSB tonight…. Has anyone tried to align the SSB module to get something more then 2.2kHz?
> I was thinking of 2.4, 2.0, 1.7 as my filters when I get the SSB module.
> Frank KG9H
>
> ______________________________________________________________
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Frank Krozel

Re: SSB at something more then 2.2kHz?

Hi Don,
Good to hear of this.
No it was built as a CW-only radio.
I am making a list to send to Madelyn Monday.
I kept the 100W PA that you saw a year ago.
This radio will then have that PA on it in a few weeks (if I have time over the holidays hi hi)
Frank
KG9H

On Dec 7, 2014, at 7:03 AM, Don Wilhelm <[hidden email]> wrote:

> Frank,
>
> Do you have the KSB2 option installed in that K2?
> If so, the SSB FL1 filter should be set to "OP1" instead of "2.2".
>
> If you do have the KSB2 option, look at the board. First check the markings on the crystals
> If they are 4913-S you have the new crystals on that board.
> Then see if there are capacitors in the CB and CN locations. If not, the width is the newer 2.4kHz, but if you do not have capacitors there, you can order the K2SSBCAPKT and change the width to 2.4kHz (or even 2.6kHz if your BFO range is sufficient). You must have the 4913-S crystals installed to take advantage of that increased filter width.
> New KSB2 options come with capacitors for the 2.4kHz width.
>
> 73,
> Don W3FPR
>
> On 12/6/2014 9:09 PM, Frank Krozel wrote:
>> OK, pondering this after listening on the K2 to SSB tonight…. Has anyone tried to align the SSB module to get something more then 2.2kHz?
>> I was thinking of 2.4, 2.0, 1.7 as my filters when I get the SSB module.
>> Frank KG9H
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>>
>

Ben Hall-2

KX3 Non-ham band upconverter use

Good morning all,

I'm toying with the idea of building an oven-stabilized LF upconverter
for my KX3. Ideally, I'd want to move LF up to the 7 MHz band to keep
the math easy and to put signals into a ham band where the KX3 more than
likely performs its best.

However, not many 7 MHz ovenized oscillators out there. So, more than
likely, I'll have to move signals elsewhere.

With the KX3 designed as a ham transceiver, I'd assume performance
outside the ham bands isn't as good as in the ham bands.

1) Is this true?

2) Is there a preference for a non-ham band frequency range? IE: Is
there any advantage to 10 MHz versus 5 MHz versus some other range?

thanks much and 73,
ben, kd5byb

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Phil Wheeler-2

Re: SSB at something more then 2.2kHz?

In reply to this post by Don Wilhelm-4

Don,

When reading this message last evening I looked at
the Elecraft web site order page and could not
find this K2SSBCAPKT (it was there when I looked
in the Spring because I did a long print out of
everything K2 related).

Is it still available but no longer listed?

73, Phil W7OX

On 12/7/14 5:03 AM, Don Wilhelm wrote:

> Frank,
>
> Do you have the KSB2 option installed in that K2?
> If so, the SSB FL1 filter should be set to "OP1"
> instead of "2.2".
>
> If you do have the KSB2 option, look at the
> board. First check the markings on the crystals
> If they are 4913-S you have the new crystals on
> that board.
> Then see if there are capacitors in the CB and
> CN locations. If not, the width is the newer
> 2.4kHz, but if you do not have capacitors there,
> you can order the K2SSBCAPKT and change the
> width to 2.4kHz (or even 2.6kHz if your BFO
> range is sufficient). You must have the 4913-S
> crystals installed to take advantage of that
> increased filter width.
> New KSB2 options come with capacitors for the
> 2.4kHz width.
>
> 73,
> Don W3FPR
>
> On 12/6/2014 9:09 PM, Frank Krozel wrote:
>> OK, pondering this after listening on the K2 to
>> SSB tonight…. Has anyone tried to align the SSB
>> module to get something more then 2.2kHz?
>> I was thinking of 2.4, 2.0, 1.7 as my filters
>> when I get the SSB module.
>> Frank KG9H

Elecraft mailing list

Re: KX3 Non-ham band upconverter use

In reply to this post by Ben Hall-2

There are a few of these available comercially.
A very inexpensive one is made by Jackson Harbor PressThe one by Jackson Harbor uses 10 Mhz (http://wb9kzy.com/lfconv.htm)
I plan on building another that uses an external 10 Mhz freq sourceso I can use the same DPS Disciplined Oscillator that I use for my K3.

From: Ben Hall <[hidden email]>
To: [hidden email]
Sent: Sunday, December 7, 2014 9:47 AM
Subject: [Elecraft] KX3 Non-ham band upconverter use

Good morning all,

I'm toying with the idea of building an oven-stabilized LF upconverter
for my KX3. Ideally, I'd want to move LF up to the 7 MHz band to keep
the math easy and to put signals into a ham band where the KX3 more than
likely performs its best.

However, not many 7 MHz ovenized oscillators out there. So, more than
likely, I'll have to move signals elsewhere.

With the KX3 designed as a ham transceiver, I'd assume performance
outside the ham bands isn't as good as in the ham bands.

1) Is this true?

2) Is there a preference for a non-ham band frequency range? IE: Is
there any advantage to 10 MHz versus 5 MHz versus some other range?

thanks much and 73,
ben, kd5byb

______________________________________________________________
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Message delivered to [hidden email]

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Don Wilhelm-4

Re: SSB at something more then 2.2kHz?

In reply to this post by Phil Wheeler-2

OK, my error, the capacitor kit is SSBCAPKT

If you need the updated crystals order E850093 for the set of 7 matched
crystals. If you need the updated crystals for both the base K2 and the
KSB2 order the matched set of 14 which is K2KSB2XTLS.

The base K2 and KSB2 crystals do not have to be matched to each other,
but the matched set of 14 is less cost than 2 times the set of 7.

73,
Don W3FPR

On 12/7/2014 10:16 AM, Phil Wheeler wrote:

> Don,
>
> When reading this message last evening I looked at the Elecraft web
> site order page and could not find this K2SSBCAPKT (it was there when
> I looked in the Spring because I did a long print out of everything K2
> related).
>
> Is it still available but no longer listed?
>
> 73, Phil W7OX
>

Don Wilhelm-4

Re: KX3 Non-ham band upconverter use

In reply to this post by Ben Hall-2

The math is even easier if you use a 10 MHz oscillator (just ignore the
leading "1" in the frequency display). Several 10 MHz "frequency
standards" exist if you want the stability of a GPS disciplined
oscillator or a rubidium standard.

73,
Don W3FPR

On 12/7/2014 9:47 AM, Ben Hall wrote:

> Good morning all,
>
> I'm toying with the idea of building an oven-stabilized LF upconverter
> for my KX3. Ideally, I'd want to move LF up to the 7 MHz band to keep
> the math easy and to put signals into a ham band where the KX3 more
> than likely performs its best.
>
> However, not many 7 MHz ovenized oscillators out there. So, more than
> likely, I'll have to move signals elsewhere.
>
> With the KX3 designed as a ham transceiver, I'd assume performance
> outside the ham bands isn't as good as in the ham bands.
>

Don Wilhelm-4

Re: SSB at something more then 2.2kHz?

In reply to this post by Frank Krozel

Frank,

You will get the new crystals with the KSB2 option, and the capacitors
for the 2.4 kHz bandwidth. So all you have to order is the KSB2 option.

I strongly recommend that you use Spectrogram for aligning the filters.
For the OP1 filter (with the 2.4kHz width) set markers at 300 Hz and
2600 Hz and center the passband between those markers.

For the FL2, FL3 and FL4 filters, you will be using the 5 pole filter on
the K2 RF board. Use Spectrogram to set the actual width of the
passband because the actual width is often much greater than that
displayed by the K2. Set the lower frequency slope of the passband in
the 300 to 500 Hz range to preserve intelligibility of the received
signal as the filter width is reduced.

73,
Don W3FPR

On 12/7/2014 9:26 AM, Frank Krozel wrote:

> Hi Don,
> Good to hear of this.
> No it was built as a CW-only radio.
> I am making a list to send to Madelyn Monday.
> I kept the 100W PA that you saw a year ago.
> This radio will then have that PA on it in a few weeks (if I have time over the holidays hi hi)
> Frank
> KG9H
>
>