For sale KRX3, BPF3 and filters

[K7TV]

I haven't turned on the KRX3 second receiver in my K3 for over a year, so it
is time to sell it and its roofing filters.

The KRX3 also has its own general coverage receive option, which is also for
sale.

I am keeping the K3 itself, but may change some roofing filters.

 

I used the KRX3 with the 2.8 SSB filter rather than the standard 2.7, but I
realize that you may prefer the 2.7 approach, so I am offering the KRX3
without any roofing filter at $490. If you want my 2.8 filter, I ask $90 for
that. The KBPF3 General Receive option (which can be used in the KRX3 or in
a K3 main receiver) is $70.

 

Additional filters from the KRX3 are available:

6.0          $90

1.8          $90

500         $60

200         $60

 

My K3 main RX currently has the same filters as the 2nd receiver, but for my
new single-RX configuration I am considering a change in CW filter widths.
As you know, in a dual-receiver K3, it is desirable to use closely matched
pairs for the 5-pole CW filters, as my 0.2 and 0.5 filters are. If you buy
my KRX3 with the 0.2 and/or 0.5 filters, I am willing to sell you the 0.2
matched pair and/or the 0.5 matched pair, at $120 per pair. In case you have
roofing filters for sale, the ones I am interested in are the 250 and the
custom 700 (or perhaps the 1.0).  

 

Neither the General Receive option, nor any of the roofing filters, will be
sold until the KRX3 itself has been sold.

 

73,

Erik K7TV

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[K7TV]

Please understand: The buyer of the KRX3 will have the first to be able to
buy any or all of the other pieces. Once that deal is closed, any left-over
pieces will be available to others.

-----Original Message-----
From: Elecraft [mailto:[hidden email]] On Behalf Of Erik
Basilier
Sent: Saturday, January 09, 2016 5:41 PM
To: [hidden email]
Subject: [Elecraft] For sale KRX3, BPF3 and filters

I haven't turned on the KRX3 second receiver in my K3 for over a year, so it
is time to sell it and its roofing filters.

The KRX3 also has its own general coverage receive option, which is also for
sale.

I am keeping the K3 itself, but may change some roofing filters.

 

I used the KRX3 with the 2.8 SSB filter rather than the standard 2.7, but I
realize that you may prefer the 2.7 approach, so I am offering the KRX3
without any roofing filter at $490. If you want my 2.8 filter, I ask $90 for
that. The KBPF3 General Receive option (which can be used in the KRX3 or in
a K3 main receiver) is $70.

 

Additional filters from the KRX3 are available:

6.0          $90

1.8          $90

500         $60

200         $60

 

My K3 main RX currently has the same filters as the 2nd receiver, but for my
new single-RX configuration I am considering a change in CW filter widths.
As you know, in a dual-receiver K3, it is desirable to use closely matched
pairs for the 5-pole CW filters, as my 0.2 and 0.5 filters are. If you buy
my KRX3 with the 0.2 and/or 0.5 filters, I am willing to sell you the 0.2
matched pair and/or the 0.5 matched pair, at $120 per pair. In case you have
roofing filters for sale, the ones I am interested in are the 250 and the
custom 700 (or perhaps the 1.0).  

 

Neither the General Receive option, nor any of the roofing filters, will be
sold until the KRX3 itself has been sold.

 

73,

Erik K7TV

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[K7TV]

The KRX3 is still available, and I am still trying to sell it in combination
with associated options, rather than making a lot of separate transactions.
Of course, I don't expect anyone to want every filter from my 2nd receiver,
so once the main pieces are sold, I expect some filters to become available
for individual sale.

To make a combination sale more attractive, I am now offering a special
package price:
- KRX3 (including the older synthesizer typically found in a K3)
- SSB filter upgrade to 2.8 kHz 8-pole
- KBPF3 general receive option
Package price for this combination is now $600 + shipping.

If you are interested in this package and want to add additional filter(s),
please let me know your requirements and I can make you a special price. The
additional filters I have are:
6.0 kHz
1.8 kHz
500 Hz (a matched pair may be available)
200 Hz (a matched pair is definitely available)

Oh, and if anyone has an INRAD 700 Hz filter for sale, please let me know.

73,
Erik K7TV


-----Original Message-----
From: Elecraft [mailto:[hidden email]] On Behalf Of Erik
Basilier
Sent: Saturday, January 09, 2016 6:11 PM
To: [hidden email]
Subject: Re: [Elecraft] For sale KRX3, BPF3 and filters

Please understand: The buyer of the KRX3 will have the first to be able to
buy any or all of the other pieces. Once that deal is closed, any left-over
pieces will be available to others.

Message delivered to [hidden email]

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[K7TV]

The modular nature of the K3 is a wonderful thing, in that it allows the
hardware to be upgradeable. However, it does open up questions of
compatibility. When major specifications change, such as with the
introduction of the K3S, the potential for confusion increases. After
advertising my KRX3 with accessories for sale, I have received emails,
especially from beginners, showing a great deal of confusion. Configuring
the radio from scratch can be hard enough for someone without experience,
and on top of that, people are thinking of upgrades the mix components from
the K3 and the K3S.

Let me make it perfectly clear: My equipment for sale comes from a K3 of
years ago, and is meant for someone who wants to add to their K3, not
nexessarily for someone who wants to add to their K3S, nor necessarily for
someone who wants to migrate their K3 to become like a K3S. However, the
radios are very similar, and some parts may work in either radio. Personally
I have no experience with the K3S, and I have been away from the list for
the past year, so I don't know if the details of compatibility have already
been covered at length. Maybe someone at Elecraft would like to chime in at
this point to clear up the confusion that obviously still exists.

In the absence of authoritative facts to the contrary, I can merely
speculate about most of the compatibility questions. It seems clear to me
that the roofing filters have not changed at all, and work the same in both
radios.  As to the General Receive Option, I would be surprised if the
pinout and physical fit is any different between the K3 version and the K3S
version. Thus I guess the one from my K3 would "work" in a K3S, but I don't
know for sure. And if it "works", does that mean you can use it in the
context of receiving the very low frequences for experimental bands that are
supported by the K3S? I would guess the answer is NO, unless the K3S is so
designed that those very low frequencies bypass the General Coverage option
board. What about the KRX3 itself? Can it be used in a K3S? Again, I don't
know for sure, but I see no reason why not, except that it lacks coverage of
those very low receive frequencies. I would guess that the limitation is not
in the KRX3 board itself, but rather in the synthesizer board. I do believe
that the new synthesizer has the same form factor and pinout as the old one,
so you would probably be able to upgrade the KRX3 to cover the very low
bands by buying a new synthesizer. Again, I may be wrong.

73,
Erik K7TV

-----Original Message-----
From: Elecraft [mailto:[hidden email]] On Behalf Of Erik
Basilier
Sent: Saturday, January 16, 2016 2:07 PM
To: [hidden email]
Subject: Re: [Elecraft] For sale KRX3, BPF3 and filters

The KRX3 is still available, and I am still trying to sell it in combination
with associated options, rather than making a lot of separate transactions.
Of course, I don't expect anyone to want every filter from my 2nd receiver,
so once the main pieces are sold, I expect some filters to become available
for individual sale.

To make a combination sale more attractive, I am now offering a special
package price:
- KRX3 (including the older synthesizer typically found in a K3)
- SSB filter upgrade to 2.8 kHz 8-pole
- KBPF3 general receive option
Package price for this combination is now $600 + shipping.

If you are interested in this package and want to add additional filter(s),
please let me know your requirements and I can make you a special price. The
additional filters I have are:
6.0 kHz
1.8 kHz
500 Hz (a matched pair may be available)
200 Hz (a matched pair is definitely available)

Oh, and if anyone has an INRAD 700 Hz filter for sale, please let me know.

73,
Erik K7TV


-----Original Message-----
From: Elecraft [mailto:[hidden email]] On Behalf Of Erik
Basilier
Sent: Saturday, January 09, 2016 6:11 PM
To: [hidden email]
Subject: Re: [Elecraft] For sale KRX3, BPF3 and filters

Please understand: The buyer of the KRX3 will have the first to be able to
buy any or all of the other pieces. Once that deal is closed, any left-over
pieces will be available to others.

Message delivered to [hidden email]

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[Joe Subich, W4TV-4]

On 1/16/2016 6:29 PM, Erik Basilier wrote:
> In the absence of authoritative facts to the contrary, I can merely
> speculate about most of the compatibility questions. It seems clear
> to me that the roofing filters have not changed at all, and work the
> same inboth radios.

Eric and Wayne have both stated unequivocally that other than one new
bypass capacitor on the +5V regulator (to reduce noise that impacts
frequencies below 500 KHz), the current KRX3 is no different than the
one in the "original" K3.  Your KRX3/accessories will work in any
version of the K3/K3S.

The only issue would be the need to match versions of the KSYN3.  If the
KRX3 is going into a K3S one would need a KSYN3A.  If the KRX3 is
going into a K3 with upgraded (KSYN3A) synthesizer the KRX3 will need
the upgraded (KSYN3) synthesizer.  If the KRX3 is going into an older
K3 with original (KSYN3) synthesizer the KRX3 will need a KSYN3 and not
the KSYN3A.

Bottom line ... if the target transceiver has a KSYN3A installed,
anyone purchasing your KRX3 will need to purchase a KSYN3A from
Elecraft in order to make use of it.

73,

   ... Joe, W4TV


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