Re: [Elecraft] K2 Band Data

On 9/1/2023 7:21 PM, Michael Carter wrote: One clarification on the AUXBUS signal: the 'auxbus' is Elecraft's proprietary 1-wire signaling scheme by which the main MCU on the K2 Control board talks to all of the other controller ICs on the various option modules and the I/O controller (relay driv

Re: [Elecraft] K2 Band Data

Hi Jerry, I had forgotten about the KRC2, Elecraft's universal band decoder/relay driver unit, so thanks to Jack, W6FB for reminding us. The K2 uses five separate filter sections (both for bandpass and lowpass selection), and these do double duty for adjacent ham bands. From my brief inspection

[Elecraft] Elecraft August Specials good through Labor Day, Sept. 5th.

Just a quick note: We are extending the August specials through the Labor Day holiday next Monday, September 4th, including on the K4, K4D, K4TOK4D Upgrade, KPA1500, KPA500, KAT500 and other products, with free shipping on products with the August special discounts, Also, we have caught up with

Re: [Elecraft] K2 Band Data

I see that the aux bus cable - for PC connection - is documented. Looks like pin 1 is the shell, pin 2 & 3 are the RXD and TXD, and pin 5 is the common. And the protocol is async RS-232 4800 baud, 2 stop bits. That part is the standard CAT interface. There are several MCU based band decoders

Re: [Elecraft] K3 Options Last Time Buy Update and other products status:

Following up on my last post, I'm running about a week and a half behind getting input for the update. I will be posting it here before the end of next week after we all get back from the holiday weekend. Hope everyone gets some relaxation this holiday weekend! 73, EricWA6HHQ *elecraft.com

Re: [Elecraft] K2 Band Data

Jerry, I also would encourage you to look at the KRC2 for your solution. It will provide BCD band output as well as individual outputs for each band.  Use whatever is compatible with you amp. The K2 on its own does not provide external band data except by decoding the propriety AUXBUS data.  T

Re: [Elecraft] K2 Band Data

On 2023-09-01 12:55, Michael Carter wrote: Hi Jerry, There is no simple access to band data in the K2 unless you want to reverse engineer the AUXBUS protocol. *** Considering that it's probably a low-speed async protocol, that might not be that hard. Depending on how your homebrew amp sele

Re: [Elecraft] Portable antennae for the KX3

Bill, For my SOTA activations I carry this little gem: https://www.packtenna.com/store/p1/PackTenna_Mini_Random_Wire_Antenna_%289%3A1_UNUN%29.html#/ It fits easily in my "Shack in a Bag."  I use a short length of coax with it. I also, as Walter suggested, always carry *two* BNC binding posts

Re: [Elecraft] Portable antennae for the KX3

On 9/1/2023 1:36 PM, Walter Underwood wrote: Regardless of what else you carry, I recommend taking a BNC to double binding post adaptor and two wires, 25 feet each. Excellent advice. 73, Jim K9YC __ Elecraft mailing list Home: http:/

Re: [Elecraft] Portable antennae for the KX3

On 9/1/2023 12:46 PM, Bill Priakos via Elecraft wrote: I am new to the site – I hear some antenna designs for portable operation with the KX3 posted here! There's nothing special about antennas for Elecraft radios. The ARRL Handbook and Antenna Book are our friends, and ought to be on every

[Elecraft] Fwd: K2 Band Data

On 9/1/2023 2:36 PM, jerry wrote: Is there any convenient connector inside the radio with band data? No. You would need to tap and decode Elecraft's proprietary AuxBus control data. Doesn't have to be the 4-bit binary that the linear expects... I would make up something to convert it.

[Elecraft] Fwd: K2 Band Data

wrong link: https://www.unifiedmicro.com/ apparently marketed by DXEngineering Forwarded Message Subject: Re: [Elecraft] K2 Band Data Date: Fri, 1 Sep 2023 12:29:42 -0800 From: Ed Cole To: elecraft@mailman.qth.net Not help for the K2 band data, but thought there might be int

Re: [Elecraft] Portable antennae for the KX3

Regardless of what else you carry, I recommend taking a BNC to double binding post adaptor and two wires, 25 feet each. Connect one wire to the red post and toss it into a tree or over a bush, connect the other wire to the black post and lay it on the ground. Press ATU TUNE and you’ll be good on

Re: [Elecraft] K2 Band Data

Not help for the K2 band data, but thought there might be interest in how I am interfacing my K3/10 band data to a 1.2 kW W6PQL amp LP filter bank: http://www.kl7uw.com/HF-6M_AMP.jpg Unified Microsystems makes an interface: www.microsystems.com/decoder.html 73, Ed - KL7UW __

Re: [Elecraft] K2 Band Data

I would suggest that the Elecraft KRC2 would provide the information quite well. It was designed for use with the K2, receiving band data and providing the ability to select bands with both high and low drive outputs. It also outputs the BCD data on four terminals. Take a look at the ELecraft we

Re: [Elecraft] Portable antennae for the KX3

__ 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: ht

Re: [Elecraft] K2 Band Data

Hi Jerry, There is no simple access to band data in the K2 unless you want to reverse engineer the AUXBUS protocol. Depending on how your homebrew amp selects its lowpass filter options, you may be able to pick up the relay control signals for the K2's bandpass and lowpass filter banks and use th

[Elecraft] Portable antennae for the KX3

I am new to the site – I hear some antenna designs for portable operation with the KX3 posted here! I am leaving for Europe, soon and want to take my little Elecraft with me with some appropriate antennae! TKS for any help. Bill, W5SJ ___

[Elecraft] K2 Band Data

Hello All, I'm interested in putting my K2 on the air with my homebrew LDMOS linear. My amp doesn't have a bandswitch - it gets Yaesu band data. Follows the transceiver from band to band like a puppy. I like it that way, because it's always on the right band, and I don't fry the LDMOS.

Re: [Elecraft] K2 & K3 FOR Sale -- Back on the Market

Gang: The person buying both my K2 & K3 had some unrelated issues, the the deal is off! So, both units are stacked up, ready to ship! I would prefer to sell both together, but other offers will certainly be considered. 73, Rob KT7L _