K3 Firmware updating
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Larry:
Although some claim this works, I wouldnt risk it. I operate #3192 with a microKEYER2 and I dont like plugging and unplugging either. I purchased one of these: http://www.amazon.com/Switch-Manual-Serial-Position-CCS11200/dp/B000TTWZTQ/ref=sr_1_1?s=electronics&ie=UTF8&qid=1276712533&sr=1-1 I built several cables using one long serial cable I had on hand and some DB-9 sockets and plugs. Or you can buy pre-made cables (see www.winford.com for all the varieties). I wired a cable from the common port of the switch to the K3 serial input. I plugged the MicroKeyer's serial output into side A and my "real" serial port from my computer through a serial cable into port B. When I want to upload software or change a setting using K3-EZ or the Utility, I turn the switch to B. When I want to use CAT using the MicroKeyer, I turn the switch to A. microKEYER is very tolerant of this shenaniganz, you can "hot switch" it in and out. RX Freq will flash with underscores when its not online, as soon as you switch back to it, it figures things out and youre back to where you were. Simple, inexpensive, and has never failed me. The switch also makes a nice riser stand for my Autek WM-1 wattmeter, bringing it level with the top of both my K3 and my Kenwood TS570D second radio. Its cheap! Why risk issues? Plus you get yet another knob to twirl (hams like twriling knobs, eh?) -lu -W4LT- K3 #3192 -------------------- Date: Tue, 15 Jun 2010 19:16:10 -0400 From: "Larry - K2GN" <[hidden email]> Subject: To: "Elecraft - K3" <[hidden email]> Message-ID: <00aa01cb0ce0$bdb7d460$39277d20$@net> Content-Type: text/plain; charset="us-ascii" Is there a safe way to update a K3 through the microHAM router? I don't like moving the cables for every update. Something is going to wear out or break. Difficult to do it with my 1 good hand . Can I put a "Y" adaptor on the RS232 and run a USB to my laptop, and leave the microHAM powered off? Laptop isn't connected to the radios at all. I just need an easier way to stay up to date. Same with using the K3 EZ and K3 Util programs. Any ideas are greatly appreciated. de K2GN - Larry - http://k2gn.com <http://k2gn.com/> K3 S/N - 3278 P3 S/N - ???? (Ordered) ______________________________________________________________ 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 |
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I encountered an interesting situation building a new control panel
box for my station that controls all the radio equipment: antenna relays, preamps, transverters, amplifiers and switches between two radios: FT-847 and the K3/10. I used opto-isolators to separate the radio side from the computer. Specifically using the RTS and DTR lines of RS-232 to control PTT and keying functions used by a lot of ham sw. I was surprised to discover that the RS-232 levels caused the opto-isolators to activate on both LO and HI levels. Apparently, they did not like the -11vdc LO logic level. I bypassed the opto-isolator direct to 2N2222 relay drivers with no issues. What this has to do with the current thread is I have two computers that I like to use with the radios (one computer runs old DOS-based programs) so I route the RS-232 lines thru a four-port parallel switch that has sub-D25 pin connectors. I was concerned that serial would not be passed but on inspecting the switch the connectors are connected pin-for-pin so it is transparent to whatever is connected. I use standard serial cables with sub-D25 to sub-D9. One more comment: I had to add some wiring to support RXD and TXD in another HB A-B switch so that downloads would pass to the K3. The HB switch is wired with twisted pair stripped from cat-5e cable. 73, Ed - KL7UW haven't uploaded either the new firmware or editor (soon) ------------------------------------------------------ Message: 1 Date: Wed, 16 Jun 2010 12:06:34 -0400 From: "Joe Subich, W4TV" <[hidden email]> Subject: Re: [Elecraft] K3 Firmware updating To: [hidden email] Message-ID: <[hidden email]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed > Or do you mean the RS232 control lines? If so, and the device > gets powered down, doesn't it's hold on the control lines go > away??? No, with no power applied to RS-232 devices - whether it be a computer serial port, MK2R+, MKII, or the K3 the "unpowered" lines will load the other lines so they will not work properly. Without special circuits, it is not possible to connect two drivers to a single RS-232 port at the same time. The best solution is the two port RS-232 switch. Note, updating with K3 is a special case since the K3 does not require the use of handshake signals for updating. Other rigs require handshake between their update software and the rig. Since application controlled handshake is not supported AT ALL by any microHAM interface, any upload capability is out of the question for other rigs. 73, ... Joe Subich, W4TV microHAM America, LLC. http://www.microHAM-USA.com http://groups.yahoo.com/group/microHAM 73, Ed - KL7UW, WD2XSH/45 ====================================== BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-600w, 432-100w, 1296-60w, 3400-fall 2010 DUBUS Magazine USA Rep [hidden email] ====================================== ______________________________________________________________ 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 |
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