K2/KIO2 with newer Palm... IR?
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K2/KIO2 with newer Palm... IR?
 
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Noticing the recent postings about running a K2 through a Palm, it just occured
to me - could a simple IR T/R pair be used with the KIO2 to run the K2 with a newer USB/Palm throught the Palm's IR port? Just a thought - maybe you've tried it already... I'd just be curious to know any of your thoughts on this method of controlling the K2. (My palm can last for many hours compared to the power hog laptop I've got). 73, Daniel AA0NI _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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The K2 is claimed.. Thanks for all the replies
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Re: K2/KIO2 with newer Palm... IR?
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In reply to this post by Daniel Reynolds-2
No. The K2 does not handle the IR encoding/decoding that is needed for
IrDA and other IR-related protocols. There are other problems also, like the Palm's IrDA runs at a faster data rate than the K2 can handle. On Apr 14, 2005, at 2:28 PM, Daniel Reynolds wrote: > Noticing the recent postings about running a K2 through a Palm, it > just occured > to me - could a simple IR T/R pair be used with the KIO2 to run the K2 > with a > newer USB/Palm throught the Palm's IR port? > > Just a thought - maybe you've tried it already... I'd just be curious > to know > any of your thoughts on this method of controlling the K2. > > (My palm can last for many hours compared to the power hog laptop I've > got). - Jack Brindle, W6FB ------------------------------------------------------------------------ --------------------- _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Re: K2/KIO2 with newer Palm... IR?
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OK, there has been several inquiries about this, so let me follow up on
my own reply. Let's assume that we can solve the protocol stack issues and somehow make the IR connection work between the Palm (or any laptop) and the K2. You then have the problem of the very narrow beamwidth and short distance of the IrDA IR optics. This means you have to keep the Palm/laptop and K2 aligned perfectly to maintain communications. This is a major pain! We are hams, radio types, so why not a better approach. My amateur astronomy friends have pointed out an interesting device from a Santa Cruz company called AirCable (http://www.aircable.net/). This is a BlueTooth device that provides a serial port that could be plugged into the K2 and communicate with a BlueTooth-enabled Palm or laptop. Other similar devices are coming onto the market at this point also. So, why put up with the hassles that IR brings when we can move to RF using technologies such as BlueTooth or ZigBee, and be able to move around at will? On Apr 14, 2005, at 6:23 PM, Jack Brindle wrote: > No. The K2 does not handle the IR encoding/decoding that is needed for > IrDA and other IR-related protocols. There are other problems also, > like the Palm's IrDA runs at a faster data rate than the K2 can > handle. > > On Apr 14, 2005, at 2:28 PM, Daniel Reynolds wrote: > >> Noticing the recent postings about running a K2 through a Palm, it >> just occured >> to me - could a simple IR T/R pair be used with the KIO2 to run the >> K2 with a >> newer USB/Palm throught the Palm's IR port? >> >> Just a thought - maybe you've tried it already... I'd just be curious >> to know >> any of your thoughts on this method of controlling the K2. >> >> (My palm can last for many hours compared to the power hog laptop >> I've got). - Jack Brindle, W6FB ------------------------------------------------------------------------ --------------------- _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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> So, why put up with the hassles that IR brings when we can move to RF
> using technologies such as BlueTooth or ZigBee, and be able to move > around at will? Sadly, the Bluetooth serial port adapters all seem to require 45 mA to 50 mA -- I checked several manufacturers. OK for the shack, not so good for PDA or field use :-( OTOH, there are tons of USB Bluetooth dongles that sell for under $20 -- even without rebates! :-) Zigbee may be better for current consumption... RFM modules, which don't have protocol stacks and error correction, have the advantage of needing very tiny currents. Hmmm, maybe a 6-pin PIC plus an RFM module and we'd be able to create a transsparent, low-current, reasonable performance wireless link... Lyle KK7P _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Re: K2/KIO2 with newer Palm... IR?
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In reply to this post by Jack Brindle
The aircable serial null modem looks nice, but it's $138 for the pair
and they both require power supplies, with wall warts pictured, so it doesn't like like something I will be ordering right away. I have thought of something similar for the T1 and FT-817 though and will put it in another thread. Leigh / WA5ZNU On Fri, 15 Apr 2005 9:41 am, Jack Brindle wrote: > Cruz company called AirCable (http://www.aircable.net/). This is a > BlueTooth device that provides a serial port that could be plugged > into the K2 and communicate with a BlueTooth-enabled Palm or laptop. _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Jack Brindle
On the heels of the K2 wireless KIO2 discussion, I thought I would share
some partly-baked ideas on T1 control. I noticed that Microchip makes a line of PICs with ISM-band transmitters in them. The T1 uses a 2-channel control with its own modulation, and I wondered about making a wireless dongle for the 817, the idea being to locate the T1 at the antenna end of the coax, as this seems to be the answer so so many problems with deploying multi-band antenna systems. Along the way I found quite a few encoded and OOK boards and systems for remote control. The simplest were $9 boards with 300MHz transistor oscillators, up to more complex oens with multi-channel modulation built in. It seemed like just directly driving the T1 with OOK would be problematic due to noise rejection, so my idea of a one-chip solution would still require the PIC to do some encoding on the rig side, and a bit of work on the T1 side as well. Here are some URLs for perusal: 418MHz and 434MHz ASK transmitters, 4 pins and tiny. 2" receiver module. Tiny surface-mount transmitter module. Also 315MHz devices. All in the $10 range http://tinyurl.com/9o8z5 Sample use of Holtek encoder Http://tinyurl.com/873jr RFPIC Forum http://forum.microchip.com/tm.asp?m=82165 _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
K2 1641 update - alignment and test II, no BFO at TP2
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Well, I thought it might be time to update you folks on where my K2
build stands. Yesterday I began Alignment and Test Part II. Things were nominal until it came time to do the VCO voltage readings, some of which were fine and some were way out of wack. Following the helpful guidance in the book, I discovered that C73 on the RF board was occupied with that 4.7pf cap I couldn't find (as opposed to the 47pf cap that's supposed to be there). With that corrected, the VCO voltage readings on each band fell into line, and I'm now up to the BFO test. There's just plain no signal that CAL Fctr can find at TP2, even though there *is* a 4918 kHz or so signal at U11 pin 6, and even at the ungrounded side of C169. Q24 *looks* OK, but what can you tell by looking? :-) I've just started squinting at the schematic to see where I should be looking for other possible sources of the problem. Of course, I'm looking for the perpetual prime suspects: solder bridges and cold-soldered joints, but haven't found any yet. I also noted that something has the S-meter calibration in an uproar; it set up with completely nominal values originally but now requires extreme settings to unpin it from the top end and the RF gain doesn't move the lit bar around like it used to. Suggested avenues of investigation are welcome... 73 de Maggie K3XS -- -----/___. _)Margaret Stephanie Leber CCP, SCJP/"The art of progress / ----/(, /| /| http://voicenet.com/~maggie SCWCD/ is to preserve order/ ---/ / | / | _ _ _ ` _ AOPA 925383/ amid change and to / --/ ) / |/ |_(_(_(_/_(_/__(__(/_ K3XS / preserve change amid/ -/ (_/ ' .-/ .-/ ARRL 39280 /order."-A.N.Whitehead/ /________________(_/_(_/_______AMSAT 32844_/<[hidden email]>/ _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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Margaret Leber wrote:
> With that corrected, the VCO voltage readings on each band fell into > line, and I'm now up to the BFO test. There's just plain no signal that > CAL Fctr can find at TP2, even though there *is* a 4918 kHz or so signal > at U11 pin 6, and even at the ungrounded side of C169. Q24 *looks* OK, > but what can you tell by looking? :-) > > I also noted that something has the S-meter calibration in an uproar; it > set up with completely nominal values originally but now requires > extreme settings to unpin it from the top end and the RF gain doesn't > move the lit bar around like it used to. > > Suggested avenues of investigation are welcome... One more observation for the detecK2ives out there: On the control board Q1-Q4 seem to be running quite warm; rather warmer than I would expect for a device designed for low power consumption--is that normal? 73 de Maggie K3XS, who's about to start checking DC voltages throughout -- -----/___. _)Margaret Stephanie Leber CCP, SCJP/"The art of progress / ----/(, /| /| http://voicenet.com/~maggie SCWCD/ is to preserve order/ ---/ / | / | _ _ _ ` _ AOPA 925383/ amid change and to / --/ ) / |/ |_(_(_(_/_(_/__(__(/_ K3XS / preserve change amid/ -/ (_/ ' .-/ .-/ ARRL 39280 /order."-A.N.Whitehead/ /________________(_/_(_/_______AMSAT 32844_/<[hidden email]>/ _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by KK7P
> Sadly, the Bluetooth serial port adapters all seem to require 45 mA
> to 50 mA -- I checked several manufacturers. OK for the shack, not > so good for PDA or field use :-( OTOH, there are tons of USB > Bluetooth dongles that sell for under $20 -- even without rebates! > :-) Go with the KISS principle... I just use the sync cradle with a null modem adapter to the K2io cable. It allows about 6 feet of freedom if not more and the cradle is a nice angle to read/write/graffitti. see pic at; > http://users.erols.com/tjmc/k2palm.jpg BTW, the older Palms ( like the 105 are dirt cheap ) run on AAA's so it's not prob with recharging. all best Tom aa2vk _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
K2 1641 -- BFO now OK at TP2, but no 8R
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In reply to this post by Margaret Leber
Margaret Leber wrote:
> Margaret Leber wrote: >> There's just plain no signal that CAL Fctr can find at TP2, even >> though there *is* a 4918 kHz or so signal at U11 pin... ...becuse there was no V ALC. J7 pin 32 wasn't soldered correctly, so now that's fixed. > One more observation for the detecK2ives out there: On the control > board Q1-Q4 seem to be running quite warm... And furthermore although RX is high, 8R is floating. Looks like something's keeping Q4 on the control board from turning on Q2. The audio is awfully quiet with no 8R voltage. :-) Suggestions welcome... 73 de Maggie K3XS -- -----/___. _)Margaret Stephanie Leber CCP, SCJP/"The art of progress / ----/(, /| /| http://voicenet.com/~maggie SCWCD/ is to preserve order/ ---/ / | / | _ _ _ ` _ AOPA 925383/ amid change and to / --/ ) / |/ |_(_(_(_/_(_/__(__(/_ K3XS / preserve change amid/ -/ (_/ ' .-/ .-/ ARRL 39280 /order."-A.N.Whitehead/ /________________(_/_(_/_______AMSAT 32844_/<[hidden email]>/ _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Re: K2 1641 -- first signals received
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Margaret Leber wrote:
> And furthermore although RX is high, 8R is floating. Looks like > something's keeping Q4 on the control board from turning on Q2. The > audio is awfully quiet with no 8R voltage. :-) Replaced Q2 twice and got .5v on 8R both times before concluding something had to be shorting 8R to ground. Found a little filament of untrimmed toroid wire making a bridge, trimmed it, now we're though the alignment and receiving 40m signals just fine. One thing though...I'm certain I heard somebody here on the list recently who had louder signals with the preamp *off*. And I'm pretty sure Don told him what the likely reason was. I just can't find the thread....anybody remeber? Don? 73 de Maggie K3XS, who will spare the "Now that we know" thread a recital of her 30-yr computing career. ;-) -- -----/___. _)Margaret Stephanie Leber CCP, SCJP/"The art of progress / ----/(, /| /| http://voicenet.com/~maggie SCWCD/ is to preserve order/ ---/ / | / | _ _ _ ` _ AOPA 925383/ amid change and to / --/ ) / |/ |_(_(_(_/_(_/__(__(/_ K3XS / preserve change amid/ -/ (_/ ' .-/ .-/ ARRL 39280 /order."-A.N.Whitehead/ /________________(_/_(_/_______AMSAT 32844_/<[hidden email]>/ _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Re: K2 1641 -- first signals received, preamp working
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Margaret Leber wrote:
> One thing though...I'm certain I heard somebody here on the list > recently who had louder signals with the preamp *off*. After reworking a couple of suspect joints in the preamp section and removing and reinstalling T6, the preamp in K2 1641 is now working. Gawd...there sure are a lot of signals on 40m I've been missing on my Yaesu FT-847. ;-) 73 de Maggie K3XS -- -----/___. _)Margaret Stephanie Leber CCP, SCJP/"The art of progress / ----/(, /| /| http://voicenet.com/~maggie SCWCD/ is to preserve order/ ---/ / | / | _ _ _ ` _ AOPA 925383/ amid change and to / --/ ) / |/ |_(_(_(_/_(_/__(__(/_ K3XS / preserve change amid/ -/ (_/ ' .-/ .-/ ARRL 39280 /order."-A.N.Whitehead/ /________________(_/_(_/_______AMSAT 32844_/<[hidden email]>/ _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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