[K3, k3S] Panadapter for the Sub Receiver

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[K3, k3S] Panadapter for the Sub Receiver

Bill Frantz
One of our field day operators announced that while he was
making QSOs on active bands, he was going to use the sub
receiver in his K3 to scan for 10M CW activity. It occurred to
me that this kind of scanning would be a lot easier if you could
attach a second P3 to the K3 sub receiver.

It seems simple. You would need an IF out from the sub receiver,
and some new protocols on the aux bus. e.g. QSY on the sub P3
QSYs the sub receiver. etc.

Does this idea spark any interest?

73 Bill AE6JV

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(408)356-8506      | around us, is there any choice | 16345
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Re: [K3, k3S] Panadapter for the Sub Receiver

Don Wilhelm
Bill,

Getting the IF output from the subRX is not a problem, but adding the
'new protocols' would likely be a problem.

So if you just want to monitor the band around wherever the subRX is
tuned, that part is easy, just add an IF output to the subRX. I have
done that to one customer's K3, it is not difficult.

73,
Don W3FPR

On 7/1/2016 1:49 AM, Bill Frantz wrote:

> One of our field day operators announced that while he was making QSOs
> on active bands, he was going to use the sub receiver in his K3 to
> scan for 10M CW activity. It occurred to me that this kind of scanning
> would be a lot easier if you could attach a second P3 to the K3 sub
> receiver.
>
> It seems simple. You would need an IF out from the sub receiver, and
> some new protocols on the aux bus. e.g. QSY on the sub P3 QSYs the sub
> receiver. etc.
>

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Re: [K3, k3S] Panadapter for the Sub Receiver

Bill Frantz
Thanks Don.

Part of my reasoning for posting was that this feature might
increase sales of P3s. Given the relative lack of interest, I
think it remains a user mod. (But my K3 might look nice with 2
P3s on top of it. :-)

73 Bill AE6JV

On 7/1/16 at 5:28 AM, [hidden email] (Don Wilhelm) wrote:

>Bill,
>
>Getting the IF output from the subRX is not a problem, but
>adding the 'new protocols' would likely be a problem.
>
>So if you just want to monitor the band around wherever the
>subRX is tuned, that part is easy, just add an IF output to the
>subRX. I have done that to one customer's K3, it is not difficult.
>
>73,
>Don W3FPR
>
>On 7/1/2016 1:49 AM, Bill Frantz wrote:
>>One of our field day operators announced that while he was
>>making QSOs on active bands, he was going to use the sub
>>receiver in his K3 to scan for 10M CW activity. It occurred to
>>me that this kind of scanning would be a lot easier if you
>>could attach a second P3 to the K3 sub receiver.
>>
>>It seems simple. You would need an IF out from the sub
>>receiver, and some new protocols on the aux bus. e.g. QSY on
>>the sub P3 QSYs the sub receiver. etc.
>>
>
-----------------------------------------------------------------------
Bill Frantz        |The nice thing about standards| Periwinkle
(408)356-8506      |is there are so many to choose| 16345
Englewood Ave
www.pwpconsult.com |from.   - Andrew Tanenbaum    | Los Gatos,
CA 95032

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Re: [K3, k3S] for the Sub Receiver

Leroy
I have a different subreceiver question:   The configuration selection is
bnc or ANTtuner ant 2. Does it require a separate antenna?   I thought the
subreceiver would use a pickoff of the current antenna or a separate
antenna.

Thanks, confused Leroy AB7CE

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Re: [K3, k3S] for the Sub Receiver

Dick Dievendorff-4
There are figures on pages 43 thru 45 of the K3S owner's manual (and similar
pictures are in the K3 owner's manual)

There are two relays that route signal to the sub RX.

One of the options you have is picking the sub receiver's input from the
main rx antenna path. That's the one I use.  Tap ANT while in BSET to choose
main path or AUX RF source.  

Dick, K6KR

-----Original Message-----
From: Elecraft [mailto:[hidden email]] On Behalf Of
lmarion
Sent: Friday, July 1, 2016 16:45
To: [hidden email]
Subject: Re: [Elecraft] [K3, k3S] for the Sub Receiver

I have a different subreceiver question:   The configuration selection is
bnc or ANTtuner ant 2. Does it require a separate antenna?   I thought the
subreceiver would use a pickoff of the current antenna or a separate
antenna.

Thanks, confused Leroy AB7CE

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Re: [K3, k3S] for the Sub Receiver

Don Wilhelm
In reply to this post by Leroy
Leroy,

The subRX will normally use the transmit antenna, be that ANT1 or ANT2 -
there is a 3 dB splitter inserted to feed both the main and the subRX.

Now --- *if* (and only if) you select the AUX antenna for the subRX,
then the antenna connection that you have plugged into the rear of the
subRX will be used - whether that be the BNC connector or the
non-transmit antenna.

So decide on which TMP cable you want to connect to the subRX AUX ANT input.
If you want it to be a receiving antenna, then I think it is best to
connect the BNC jack.
If instead you have two antennas, both of which are transmit capable,
then you may want to connect the subRX AUX ANT to the KAT3.  When the
subRX AUX antenna is selected, receive for the subRX will be from the
non-transmit antenna - in other words, if you select ANT1, the subRX
will use ANT2 - and vice-versa.

73,
Don W3FPR


On 7/1/2016 7:44 PM, lmarion wrote:
> I have a different subreceiver question:   The configuration selection
> is bnc or ANTtuner ant 2. Does it require a separate antenna?   I
> thought the subreceiver would use a pickoff of the current antenna or
> a separate antenna.
>

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Re: [K3, k3S] Panadapter for the Sub Receiver

tomb18
In reply to this post by Bill Frantz
HiOne thing missing is software support. A key api command is missing for the subreceiver and is unlikely to be made available.So, it's an ok mod to get an overview of an area of the airwaves,  but not accurate enough for serious use.73 Tom va2fsq.com 


Sent from my Samsung Galaxy smartphone.
-------- Original message --------From: Bill Frantz <[hidden email]> Date: 2016-07-01  6:04 PM  (GMT-05:00) To: [hidden email] Subject: Re: [Elecraft] [K3, k3S] Panadapter for the Sub Receiver
Thanks Don.

Part of my reasoning for posting was that this feature might
increase sales of P3s. Given the relative lack of interest, I
think it remains a user mod. (But my K3 might look nice with 2
P3s on top of it. :-)

73 Bill AE6JV

On 7/1/16 at 5:28 AM, [hidden email] (Don Wilhelm) wrote:

>Bill,
>
>Getting the IF output from the subRX is not a problem, but
>adding the 'new protocols' would likely be a problem.
>
>So if you just want to monitor the band around wherever the
>subRX is tuned, that part is easy, just add an IF output to the
>subRX. I have done that to one customer's K3, it is not difficult.
>
>73,
>Don W3FPR
>
>On 7/1/2016 1:49 AM, Bill Frantz wrote:
>>One of our field day operators announced that while he was
>>making QSOs on active bands, he was going to use the sub
>>receiver in his K3 to scan for 10M CW activity. It occurred to
>>me that this kind of scanning would be a lot easier if you
>>could attach a second P3 to the K3 sub receiver.
>>
>>It seems simple. You would need an IF out from the sub
>>receiver, and some new protocols on the aux bus. e.g. QSY on
>>the sub P3 QSYs the sub receiver. etc.
>>
>
-----------------------------------------------------------------------
Bill Frantz        |The nice thing about standards| Periwinkle
(408)356-8506      |is there are so many to choose| 16345
Englewood Ave
www.pwpconsult.com |from.   - Andrew Tanenbaum    | Los Gatos,
CA 95032

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Re: [K3, k3S] Panadapter for the Sub Receiver

Clay Autery
In reply to this post by Bill Frantz
I'd definitely buy a second P3 for my sub-RX if the IF Out was on the
back panel and it was incorporated into the firmware...

______________________
Clay Autery, KY5G
MONTAC Enterprises
(318) 518-1389

On 7/1/2016 5:04 PM, Bill Frantz wrote:

> Thanks Don.
>
> Part of my reasoning for posting was that this feature might increase
> sales of P3s. Given the relative lack of interest, I think it remains
> a user mod. (But my K3 might look nice with 2 P3s on top of it. :-)
>
> 73 Bill AE6JV
>
> On 7/1/16 at 5:28 AM, [hidden email] (Don Wilhelm) wrote:
>
>> Bill,
>>
>> Getting the IF output from the subRX is not a problem, but adding the
>> 'new protocols' would likely be a problem.
>>
>> So if you just want to monitor the band around wherever the subRX is
>> tuned, that part is easy, just add an IF output to the subRX. I have
>> done that to one customer's K3, it is not difficult.
>>
>> 73,
>> Don W3FPR
>>
>> On 7/1/2016 1:49 AM, Bill Frantz wrote:
>>> One of our field day operators announced that while he was making
>>> QSOs on active bands, he was going to use the sub receiver in his K3
>>> to scan for 10M CW activity. It occurred to me that this kind of
>>> scanning would be a lot easier if you could attach a second P3 to
>>> the K3 sub receiver.
>>>
>>> It seems simple. You would need an IF out from the sub receiver, and
>>> some new protocols on the aux bus. e.g. QSY on the sub P3 QSYs the
>>> sub receiver. etc.
>>>
>>
> -----------------------------------------------------------------------
> Bill Frantz        |The nice thing about standards| Periwinkle
> (408)356-8506      |is there are so many to choose| 16345 Englewood Ave
> www.pwpconsult.com |from.   - Andrew Tanenbaum    | Los Gatos, CA 95032

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