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:elecraft-boun...@mailman.qth.net] On Behalf Of Erik Basilier Sent: Saturday, January 16, 2016 2:07 PM To: Elecraft@mailman.qth.net 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:elecraft-boun...@mailman.qth.net] On Behalf Of Erik Basilier Sent: Saturday, January 09, 2016 6:11 PM To: Elecraft@mailman.qth.net 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 ebasil...@cox.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to ebasil...@cox.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
