[Elecraft] RE: Elecraft in NC and new amp
It was nice to see the Elecraft booth at the Raleigh Hamfest. It looked quite professional and I noticed some folks thought the people behind the table were employees! It was especially nice to chat with Don, W3FPR after having read so many of his posts. Gordon, KA2NLM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] KX1 Alignment and Test - Part I - Power Supply -Batteries OK?
Martin, Batteries ARE a power supply. Be safe - particularly when doing testing with a battery supply - they can produce very large currents (even though only for a short time). I recommend ALWAYS putting a fuse near the battery terminal of any battery - even small batteries can produce a very large current if accidentally short circuited, and molten metal can be the result - think: 'If what the object that contacts the battery wire happens to be the watch or the ring I am wearing ...' - well you can guess 'the rest of the story'. 73, Don W3FPR -Original Message- Really dumb question. I don't have a power supply unit but the alignment test instructions state: Connect an 8 to 14 VDC power supply to J1 with the positive (+) lead to the center pin. Do you think I can just put 6 AA cells into the supplied battery holders in series to generate 9V, and use that in the alignment phases? ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] K2 VCO Alignment
Wayne, With only that small amount of difference, you are not likely to encounter any problem even though your BFO low end of the range is a bit high - yes, a 60 Hz difference with an uncalibrated 4 MHz reference is 'splitting straws' - you may want to check it later 'just for reference', but as long as you don't run out of adjustment capability when setting the BFOs for the filters, all is well. 73, Don W3FPR -Original Message- -and- after that, no more funny readings. Well, except: BFO Low Freq. measured 4912.76 [should not read more than 4912.7] however, I have not yet calibrated the 4 MHz Osc. as my counter needs work. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] FORTH
Are there any decent modern RPN calcs? I had a much loved HP32SII but I lost it when I moved house and have not been able to find a decent replacement. I have soft RPN calc on my palm, but I like proper buttons to push. Chris - VP8BKF and it will pring 27! Every modern RPN calculator should come with a built in FORTH :). ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
[Elecraft] FT: KDSP2 for KAF2
I would like to trade my KDSP2 for a KAF2 and $150 shipped. KDSP2 works great; I just prefer the KAF2 for my purposes. Please email directly if interested. 73, Mark Baugh W5EZY Grenada MS __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] Elecraft in NC and new amp
OOOPS - I had to apologize big time - it was Rick (Tilton) who helped with the RARS booth, not Rich. My mind to finger linkage wasn't working properly - or senior momentG. Anyway, here is public apology to Rick. 73, Don W3FPR -Original Message- Sorry we couldn't demonstrate how well the K2 receives - I brought along an antenna and mast, but found we were encased by a metal building, and had to give up any hope of receiving anything but a few very strong signals. We were able to display the RF waveforms on a 'scope, and several were interested on the keying waveform and had fun seeing their SSB RF envelope display. Rich, Dave, and I had a great time. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: Re: [Elecraft] FORTH
I'm holding on to my HP15C which I bought in college in 1987, still have the receipt. My boss here was looking for a good RPN calculator and figured he might find that one on eBay cheap. WRONG! Turns out that very good examples of it, complete with manual and case are about $300 to $400. Even one with a broken LCD display was still over $100, more than I paid for it new. Not sure when (or why) HP discontinued it. They still make the financial version (HP12C) which is the same form factor, just different button assignments. I also have an HP48G+ which is still RPN. Not sure if it is still made or not. I got the '48 about 5 years ago. Some of the '48s have expandable memory slots, however, mine has 128k fixed RAM. I've seen where people have programmed it to use its IR port as a remote control! Hmm, wonder if the HP48 can be used to control the K2? Mark, NK8Q From: Chris [EMAIL PROTECTED] Date: Mon Apr 18 07:54:35 CDT 2005 To: Jessie Oberreuter [EMAIL PROTECTED] Cc: Elecraft elecraft@mailman.qth.net, Kevin Rock [EMAIL PROTECTED] Subject: Re: [Elecraft] FORTH Are there any decent modern RPN calcs? I had a much loved HP32SII but I lost it when I moved house and have not been able to find a decent replacement. I have soft RPN calc on my palm, but I like proper buttons to push. Chris - VP8BKF and it will pring 27! Every modern RPN calculator should come with a built in FORTH :). ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
FW: Re: [Elecraft] FORTH
Reminds me of my first, professional, programming job. The Motorcycle dealer where I worked had an HP-?? (I forget which, but it had a magnetic strip reader for programming) and I managed to fit a Payroll Tax Calculation system on one card. Long after I quit that job, I'd get the calculator and the new tax rate tables in the mail with a check every year, and reprogram the new tables. Many waters under that bridgeG. Probably we are talking about 1976 or so. Yes, performing calculation on a non-RPN calculator is still very difficult. I can't imagine why RPN isn't standard - It's so intuitive. My dad bought an HP-35 ($395 in the early 1970's) and I've been an RPN kinda guy ever since. Dan / WG4S / K2 #2456 snip My boss here was looking for a good RPN calculator and figured he might find that one on eBay cheap. /snip ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] FORTH
Chris wrote: Are there any decent modern RPN calcs?...I have soft RPN calc on my palm... Don't forget Quartus ( http://www.quartus.net ), a complete FORTH implementation for Palm. By the way, the on-board computer on the AMSAT/Oscar-40 amateur radio satellite (may it rest in peace) ran IPS, a multithreaded version of FORTH that used German keywords. 73 de Maggie K3XS, who will be looking closely at her K2's T6 when she gets home from flying today -- -/___. _)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_/[EMAIL PROTECTED]/ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: Re: [Elecraft] FORTH
Hi I have and use regularly a HP-25 that is about 30 years old. The NiCad batteries failed many years ago so I mounted a 2.5 volt regulator made with a LM117 inside the battery box and power it with a wall wart. Once you learn RPN nothing else seems as easy. I also have a HP-28C and it programs with a sub-set of FORTH. If HP has dropped all of the RPN calculators from the line, one of the several aps for the palm may be the only place you can find it. I also have around here somewhere a little single board computer that is based on a 6809 with FORTH built in in firmware Don Brown KD5NDB PS I have a Helix computer out in the garage now. It was the final generation of the SWTPC 6809 SS 50 buss computer. It probably still works although I have not tried to boot it in 10 years. It's OS was Flex, a much better design than CP/M in my opinion. I still make my living writing 6808 assembly language for small controllers. Subject: Re: Re: [Elecraft] FORTH I'm holding on to my HP15C which I bought in college in 1987, still have the receipt. My boss here was looking for a good RPN calculator and figured he might find that one on eBay cheap. WRONG! Turns out that very good examples of it, complete with manual and case are about $300 to $400. Even one with a broken LCD display was still over $100, more than I paid for it new. Not sure when (or why) HP discontinued it. They still make the financial version (HP12C) which is the same form factor, just different button assignments. I also have an HP48G+ which is still RPN. Not sure if it is still made or not. I got the '48 about 5 years ago. Some of the '48s have expandable memory slots, however, mine has 128k fixed RAM. I've seen where people have programmed it to use its IR port as a remote control! Hmm, wonder if the HP48 can be used to control the K2? Mark, NK8Q From: Chris [EMAIL PROTECTED] Date: Mon Apr 18 07:54:35 CDT 2005 To: Jessie Oberreuter [EMAIL PROTECTED] Cc: Elecraft elecraft@mailman.qth.net, Kevin Rock [EMAIL PROTECTED] Subject: Re: [Elecraft] FORTH Are there any decent modern RPN calcs? I had a much loved HP32SII but I lost it when I moved house and have not been able to find a decent replacement. I have soft RPN calc on my palm, but I like proper buttons to push. Chris - VP8BKF and it will pring 27! Every modern RPN calculator should come with a built in FORTH :). ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] HP calculators
HP now makes the HP33s (~$45), which is a slightly enhanced 32sii does RPN or algebraic. Looks like marketing was at work, though, since they put the buttons in a strange V pattern. I've also read that the decimal point is tough to see. And for matrices, differential eqns, etc., you can now upgrade to a 49g+. Great functionality, but I think HP has lost a bit in the quality department. The newer calcs just don't have that solid feel of the older brown ones. (But I still buy them!) Mike AB3AP [EMAIL PROTECTED] wrote on 04/18/05 09:50 ET: I'm holding on to my HP15C which I bought in college in 1987, still have the receipt. My boss here was looking for a good RPN calculator and figured he might find that one on eBay cheap. [...] ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] HP calculators
I still regularly use my HP-11 and have a HP-45 around somewhere, although if I found it I doubt that I could still buy a battery. Bob, N7XY ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
[Elecraft] KX1 part 1 resistance checks - fail. Any suggestions?
Hi. I'm using a modern ANALOGUE multimeter to do the resistance checks on my KX1. I have performed the visual inspection and everything looks good; There were no problems during construction YET some of the resistance checks fail, and I'm wondering what it could be... U3 pin 3 is 5 ohms ... good. But U3 pins 5, 6 and 7 are all around 2K. They're supposed to be 10k. I checked the calibration with a 2.7k resistor and pins 5, 6 7 to ground all come in below that resistor by around .7k. Also, I get odd behaviour with D2/D3. With switch S2 in one position, I get infinite resistance for the banded end of D2 and D3 regardless of the position of S1. With switch S2 in the other position, I get 1.8k on both D2 and D3 regardless of the position of S1. One of those is supposed to be 10k. So something is wrong! But I'm not sure what... Send instant messages to your online friends http://uk.messenger.yahoo.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
[Elecraft] Elecraft options FS
Elecraft KBT1 internal battery option $40 Elecraft KSB2 SSB option $85 Elecraft KIO2 RS-232 Interface $85 all unbuilt, and all prices includes conus shipping. Thanks! LL/K3ESE __ Do you Yahoo!? Plan great trips with Yahoo! Travel: Now over 17,000 guides! http://travel.yahoo.com/p-travelguide ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
[Elecraft] NT
According to IBM (big Add in Computerworld, when NT came out after Big Blue and Uncle Billy split over OS/2), in HUGE LETTERS, they proclaimed it meant Nice Try. Dan / WG4S / K2 #2456 snip I thought NT meant New Technology? /snip Many software customers I have visited who are Unix fans have always proclaimed that NT was an acronym of Neantherdal Technology. I was at one customer site many years ago where they had a nice poster of a caveman beating a PC with a club to emphasize the point. David, M0DHO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
[Elecraft] HP calculators
The strip reader was an HP 45. I had that and the HP 35. Prices were outlandish in those days ( late 50's and early 60's) for a young engineer. 73 Bill N2DH ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] FORTH - OT
The following is OT commentary on HP calculators, so please delete now if not interested. Mark wrote: I'm holding on to my HP15C which I bought in college in 1987... I was a junior at Ga. Tech in 1972 when the famous HP-35 appeared. At $400 in 1972, that's about $1800 today. You could literally buy a passable used car for the price of the HP. Needless to say, few of us owned one, and its use was generally not allowed on tests. My boss here was looking for a good RPN calculator and figured he might find that one on eBay cheap... Turns out that very good examples of it ... are about $300 to $400. The HP15C was a great machine for its time in the early to mid-1980s. Not sure when (or why) HP discontinued it. It was replaced in 1988 by the HP42S, whose capabilities and ease of use (but unfortunately not style and appearance) are far far far in excess of those of the HP15C. Just look at HP42S prices on ebay and you'll see that reflected. It is arguably, for its size, the finest scientific calculator ever made. Unfortunately, it was discontinued in 1995, with no equivalent or better product taking its place. I also have an HP48G+ which is still RPN. Not sure if it is still made or not. Members of the whole HP48-series are capable (I've got three), but difficult to use without plenty of familiarization. They are way too large and heavy to be considered a pocket machine. They are simply too sophisticated. What real good is having an object-oriented programming system in a handheld? I want a simple programming language with go to instructions! With the HP48 series, what one notices most is not how simple it is to handle something difficult, but how difficult it is to handle something simple. Chris wrote: Are there any decent modern RPN calcs? I had a much loved HP32SII but I lost it ... and have not been able to find a decent replacement. HP32SII's are all over ebay for small prices. You should be able to find plenty of NOS units. But, IMHO, it is a very aggravating machine to use, especially for complex-domain number crunching. The long-discontinued HP42S is the standard against which all other pocket programmable RPN calculators should be judged...all others pale in comparison, even though the HP32SII is significantly faster than the HP42S. There's something more friendly about a pocket calculator, compared to superwhamodyne handheld PC units. But I think it's a dying market. In my day, the pocket scientific calculator was an essential tool of engineering professionals. Today, even the most sphisticated units are primarily student tools. Mike / KK5F ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
[Elecraft] K1 volume
I have a K1 with the ATU and noise blanker. I notice once in a while the volume will be low.when I turn it on. A simple tap of the key will cause it to increase to normal at any volume setting. Then when I am listening it may decrease again until I tap the key again to bring it to normal. Anyone have any ideas as to what might cause this situation ? Ken K1DWZ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] HP calculators
Bill wrote: The strip reader was an HP 45. I had that and the HP 35. The only HP handheld calculators that used magnetic card programing were: HP-65 - Introduced in 1973 at $800 HP-67 - Introduced in 1976 at $450, replaced the HP-65 HP-41C-series with card-reader option (1979) The HP-45 came out in 1973 for $400, and HP dropped the price of the HP-35 to $300. The HP-45 was HP's second and more capable scientific calculator. It was not programmable. Prices were outlandish in those days ( late 50's and early 60's) for a young engineer. I'd imagine so...since that time span was 10 to 15 years before the first HP handheld appeared. The HP-35 wasn't marketed until Spring 1972. HP's first scientific desktop was the HP-9100, introduced in 1968 for several thousand dollars, depending on options. 73, Mike / KK5F (Self-admitted calculator geek) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] Now that we know
Jeeez, all you guys are just kids! I cut my teeth on an IBM 650 as a Stanford undergrad. OS??? Listen, we entered the boot program through the front panel switch register. The 650 occupied three large cabinets in a heavily a/c'd room (it was GREAT in the summer!). 2000 10 digit words, plus sign, of drum memory with an incredible 96 ms add time! Languages? Well there was SOAP, IT and the state-of-the-art FORTRANSIT, which, of course was built on top of ITa very crude early attempt at FORTRAN! SOAP was an assembler that placed instructions on the drum in an optimum fashion to overcome the drum latency. From the 650 Stanford upgraded to a Buroughs 220 which had 10k decimal words of CORE memory! Also tape drives! BALGOL (Burough's dialect of ALGOL) was the language of choice though assembler was still heavily used for those of us who needed real efficiency. Dick Hamming was at Stanford at this time and chatting with him while waiting for output taught me more math and numerical techniques than I had ever learned in the classroom. We also had a (one of 3 built) IBM 797 which was essentially a 650 with core memory and was plug board programmed with a 402 printer plug board! Of course we went through the 7090, B5000 and 360 series. At that point I decided that my interest in computing/radio/electronics got me into real-time computing with HP-2100 series mini computers. I worked for the Stanford Radio Science Lab (and later SRI Remote Measurements Lab) developing control , data acq and processing/display systems for SRI's experimental/test bed OTH radar using single board computers from Ziatech. Man was that ever off topic! I'll mention something on topic. I saw a new Elecraft thing at the DX Convention in Visalia. Wow!! You QRO guys, start saving your pennies! 73, Doug W6JD - Original Message - From: Kevin Rock [EMAIL PROTECTED] To: Robert McGwier [EMAIL PROTECTED]; Elecraft Mail Elecraft@mailman.qth.net Sent: Sunday, April 17, 2005 2:04 PM Subject: Re: [Elecraft] Now that we know I never was a Vaxen. I've worked with dozens of operating systems over the years but not that one. I live in a cloistered world mostly writing my own software to go with the wire wrapped CPU and memory card kluge works I have as boxes :) One day I may try VMS and see what I've been missing. A break from the big three OSes is in order. I find Lin/Mac/Win constricting. There were other much better OSes in the early days of mini and micro computers. Kevin. KD5ONS On Sun, 17 Apr 2005 20:49:52 +, Robert McGwier [EMAIL PROTECTED] wrote: Now that we know I am an ancient computer person, I found a few links: http://www.google.com/search?hl=enq=email+exploderbtnG=Google+Search Bob N4HY -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.9.15 - Release Date: 4/16/2005 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] FORTH - OT
I've got an HP-11C and an HP-25, either one of which you'll have to pry from my cold, dead, hands. Doug W6JD - Original Message : Re: [Elecraft] FORTH - OT The following is OT commentary on HP calculators, so please delete now if not interested. Mark wrote: I'm holding on to my HP15C which I bought in college in 1987... ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] FORTH - OT
WoW! I've got a couple of 15c's from college days (they were mismarked at K-mart for a while so I got a spare for something like $20). I see they're going for $150+ on ebay .. hmm, this could finance my Dayton/FDIM trip nicely :) de John/W1RT ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] FORTH - OT
On 18 Apr 2005 at 12:37, Mike Morrow wrote: There's something more friendly about a pocket calculator, compared to ?superwhamodyne handheld PC units. But I think it's a dying market. In my day, the pocket scientific calculator was an essential tool of engineering professionals. Today, even the most sphisticated units are primarily student tools. Mike / KK5F You guys are really making me feel like an OF. I used a contraption called a SLIDE RULE all through my college EE courses and continued using it several years later after going to work at NASA. when I got there, they were using a big, entirely mechanical beast from Friden for fancy calculations. There were some of the big IBM machines in the Comp Lab, but they weren't for lowly engineers to use. Of course we did latch on to the HP scientific calculators when they came available. You guys have inspired enough nostalgia on my part to order an HP 33 calculator. -- Frank Emens, W4HFU [EMAIL PROTECTED] Huntsville, Alabama ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
[Elecraft] RE: Now that we know
Then I started studying electronics in the mid 60s with tube gear. Reminds me of the time I was an Explorer Scout advisor in the 80's and one of the kids came up, showed me an old schematic, and asked What's this funny thing here? It's got an upsidedown T on top, dotted line in the middle, solid line on the bottom with a teepee underneath, all inside of a circle. I told him it was a vacuum tube. Blank stare. So I added, It's like a cross between an FET and a lightbulb. 73, Bob, WO3E ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: FW: Re: [Elecraft] FORTH
If the strip reader was built in you had the HP-65. Later the HP-41 (31?) series had a strip reader as and optional plug on unit. I used the HP-IL to RS232 converter with my HP41. Mark On 4/18/05, Dan Barker [EMAIL PROTECTED] wrote: Reminds me of my first, professional, programming job. The Motorcycle dealer where I worked had an HP-?? (I forget which, but it had a magnetic strip reader for programming) and I managed to fit a Payroll Tax Calculation system on one card. Long after I quit that job, I'd get the calculator and the new tax rate tables in the mail with a check every year, and reprogram the new tables. Many waters under that bridgeG. Probably we are talking about 1976 or so. Yes, performing calculation on a non-RPN calculator is still very difficult. I can't imagine why RPN isn't standard - It's so intuitive. My dad bought an HP-35 ($395 in the early 1970's) and I've been an RPN kinda guy ever since. Dan / WG4S / K2 #2456 snip My boss here was looking for a good RPN calculator and figured he might find that one on eBay cheap. /snip ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] Now that we know (END of thread)
I just got back in town from a Long Weekend at the Visalia DX convention. Looks like we've had a lot of emails on the list this weekend! (It always seems to happen when I'm off line..) In any case, lets end this non-K1/K2/T1 etc OT thread for now to relieve the email pressure on others ;-) Please remember before posting lots of off topic comments to the list that we have close to 1900 subscribers now, so the number of daily emails can explode in volume when everyone hits the return key a little too quickly or frequently :-) Also, please edit all copied text from previous posts down to a couple of sentences when replying to postings. This makes the list archives and daily digest much easier to read. 73, Eric WA6HHQ List moderator ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] FORTH - OT (END of Thread)
Lets end this one too. :-) 73, Eric WA6HHQ Elecraft List Moderator ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
[Elecraft] Re: FT: KDSP2 for KAF2 - Gone
Thanks to all respondants; the deal has been made. 73, Mark W5EZY I would like to trade my KDSP2 for a KAF2 and $150 shipped. KDSP2 works great; I just prefer the KAF2 for my purposes. Please email directly if interested. 73, Mark Baugh W5EZY Grenada MS __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Do you Yahoo!? Plan great trips with Yahoo! Travel: Now over 17,000 guides! http://travel.yahoo.com/p-travelguide ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] KX1 battery
Does anyone of you have experience charging Ni-Mh cells in the KX1? I have 2400 mA/h cells installed and if I am right, a 33 Ohm resistor accross D3, would charge these cells in app. 10 hours. I saw Paul W0RW's post awhile ago about his Ni-CAd battery mod. I don't know or understand very much about the actual theory behind rechargable batteries. It is my understanding that Ni-Mh maintain a higher voltage for a longer period without the memory of Ni-CAD. It would seem that having Ni-Mh would be a more practical option for power as compared to the standard Ni-CAD option. 73, KI4DGH Chuck G. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
[Elecraft] (no subject)
You qare right! It was he 65. chaulk it up to old age 73 Bill ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
[Elecraft] XG1 Report
I picked up an XG1 oscillator kit at the Elecraft booth at the DX convention in Visalia. Assembled it this morning and used it's 50 uV setting to check the S-meters in my four HF radios with the following results: Elecraft K2/100 = S9 (digital S-meter) (S-meter was calibrated by adjusting the value of R1 for best AGC action and using the S-meter calibration procedure described in the manual, i.e., full scale = RF gain fully CCW and S0 = RF gain fully CW with antenna disconnected -- apparently done this way, there is no need to calibrate S9 on the meter using the method described by others on this e-mail reflector). Yaesu FT-1000MP = S9 (main and sub rx's, digital S-meters) Icom IC-756Pro3 = S9+3 dB (analog S-meter), S9 (digital S-meter) Kenwood TS-830S = S9+3 dB (analog S-meter) (1 uV setting = S4) Years ago I calibrated the S-meter in the TS-830S using a metrology lab calibrated HP-610C signal generator. I surmise that the Icom's S-meter was factory calibrated at S9 using 50 uV. I therefore believe the -73 dBm output of the my XG1 is actually -70 dBm (70.7 uV). If the 50 uV setting on the XG1 is actually -70 dBm, then the 1 uV setting should be down another 34 dB, or -104 dBm (1.414 uV). Interestingly, only the Kenwood has an accurate S-meter for signal levels below S9. It's S-meter reading with the XG1 set for 1 uV was S4 (all other radios were S0). Based on the 6 dB standard that each S-unit = 6 dB (and -73 dBm = S9) means that S4 is a signal level of -103 dBm, which agrees quite closely with the presumed -104 dBm output of the XG1 at the 1 uV setting. When I get ambitious, I'll perform the procedure for determining the noise floor of each receiver as described in the XG1 manual. All in all, the XG-1 is a neat piece of test equipment to add to the shack and, as the saying goes, Good enough for government work. 73, de Earl, K6SE ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] XG1 Report
Elecraft K2/100 = S9 (digital S-meter) Yaesu FT-1000MP = S9 (main and sub rx's, digital S-meters) Icom IC-756Pro3 = S9+3 dB (analog S-meter), S9 (digital S-meter) Kenwood TS-830S = S9+3 dB (analog S-meter) (1 uV setting = S4) Years ago I calibrated the S-meter in the TS-830S using a metrology lab calibrated HP-610C signal generator. I surmise that the Icom's S-meter was factory calibrated at S9 using 50 uV. I therefore believe the -73 dBm output of the my XG1 is actually -70 dBm (70.7 uV). Or, you could surmise that the K2, FT100 MP main, FT100MP sub, and Icom digital are accurate, the Icom analog is 3 dB high and that the Kenwood has drifted 3 dB since the cal was done so long ago... Or, that the XG-1 is 1.5 dB high and all the radios are +/- 1.5 dB of that :-) Enjoy! Lyle KK7P ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] K2 1641 -- first signals received, preamp working
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_/[EMAIL PROTECTED]/ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
[Elecraft] WA3WSJ Hike Tomorrow
Hello all, Trevor Boy and myself will hike from Rt.501 to Rt.72 in PA tomorrow. I plan to operate, but for only an hour or so as we have a twelve-mile hike. I plan to start my hike at Rt.501 about 8:30am. We will then hike the four miles to a shelter where we will eat lunch and I will operate my K1 on 40m/20m. I plan to be on the air around 10:30am to 11:30am EDT. We will then hike another 8 miles to Rt.72, Swatara State Park, where Chuck, N3FCM, will pick us up around 4:30pm. I won't be on the air long so look for me around 11am to noon EDT. In Swatara State Park I must cross the Swatara Creek by using the Waterville Bridge. This is a metal bridge and one of only about three left in the US like it. I will take some pics of the bridge for anyone who wants one. I plan to take some pictures of the hike too. Hope to work you tomorrow around 11am or so. I sure hope Trevor(my dog) doesn't drink to much as he normally does on the trail. 72, Ed, WA3WSJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] XG1 Report
Earl wrote: Elecraft K2/100 = S9 (digital S-meter) (S-meter was calibrated by adjusting the value of R1 for best AGC action and using the S-meter calibration procedure described in the manual, i.e., full scale = RF gain fully CCW and S0 = RF gain fully CW with antenna disconnected -- apparently done this way, there is no need to calibrate S9 on the meter using the method described by others on this e-mail reflector). Yaesu FT-1000MP = S9 (main and sub rx's, digital S-meters) Icom IC-756Pro3 = S9+3 dB (analog S-meter), S9 (digital S-meter) Kenwood TS-830S = S9+3 dB (analog S-meter) (1 uV setting = S4) --- Someone I was chatting with recently said he had tested the S-meters of several receivers and found that 1 S-unit can equal anything from 3 dB to more than 6 dB. I had always assumed the target was 6 dB/S-unit. Apparently not so. Ron AC7AC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] HP Calcs - was RPN - was FORTH
Look in the archive. I posted K2 control programs for the HP48 about two years ago. Jeff Burns AD9T -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Daniel Reynolds Sent: Monday, April 18, 2005 11:03 AM To: elecraft@mailman.qth.net Subject: [Elecraft] HP Calcs - was RPN - was FORTH I know that this is very off topic - but since we all seem to have case of geek-itis (one of it's symptoms is reminiscing of old sliderules, calculators, computers, radios)... The original HP-48's (I had a 48SX in college 92-94 before I broke the large display - I was young and 'stupid') have a serial connection. I actually had a simple terminal program running and cluged a serial connection (before I actually bought the official DB9 serial cable) and ran a TNC off of it. To help keep this posting on topic - it is technically feasible to write a program for the 48 series that would allow you to interface with the K2 if you had the time, but with the palm pilots larger display - I would think that the user interface on a Palm would be 10x better (except that graffiti is a poor replacement for a keypad/keyboard). HP left the scientific/graphing calculator scene for a few years and returned with a new model (HP-49/49G+/49GII) that is actually emulating the original 48 processors. Some (all?) of the 49's even have the capability of expanding memory with one of those 512 MB memory cards (which blows the socks off of the original 32KB my 48SX had built in). Here's a few links link to all things relating to HP scientific graphinc calculators: http://www.hpcalc.org http://www.hpmuseum.org/ The major complaints with the newer 49 is that the keys no longer have that solid tactile feel (i.e. it feels cheap). I think they've also pulled the IR port since there was concern about students utilizing that port to cheat during exams. You can still sync up calculators through a wired port. When I recently returned to the college scene - I longed for my old 48 - but ended up buying a TI-89 for my Statistics class (the instructor as well as 99% of the students in the class were 'stuck with' TI's). It did the job well, but it just didn't feel the same - and everytime I pick the thing up now, I still scratch my head trying to figure out how to do some of the simple things I could do very quickly with the 48. (It's sort of like MS Word 2000 - it does too much for you - it kept my decimal inch calculations in fractions for me... but made it difficult to get the whole number with remainder ... a mixed fraction - and since I didn't have time to dig out the manual - I had to do it by hand). Anyhow - in my opinion - HP really has lost its lead in the calculator world in the last 10 years as is evident in the price of their used calculators which are worth their weight in gold. ... after further browsing ... check out this calculator they're developing independent of HP!!! http://www.hpcalc.org/qonos.php If this thing takes off - you'll have linux in the hand - plus a an HP/TI emulator. Read a little further and you'll see that it has an AUDIO I/O port and a SERIAL port... who will be the first to make this thing sing and dance with their K2 and do PSK-31 at the same time?! My 2 cents, Daniel AA0NI --- [EMAIL PROTECTED] wrote: I'm holding on to my HP15C which I bought in college in 1987, still have the receipt. My boss here was looking for a good RPN calculator and figured he might find that one on eBay cheap. WRONG! Turns out that very good examples of it, complete with manual and case are about $300 to $400. Even one with a broken LCD display was still over $100, more than I paid for it new. Not sure when (or why) HP discontinued it. They still make the financial version (HP12C) which is the same form factor, just different button assignments. I also have an HP48G+ which is still RPN. Not sure if it is still made or not. I got the '48 about 5 years ago. Some of the '48s have expandable memory slots, however, mine has 128k fixed RAM. I've seen where people have programmed it to use its IR port as a remote control! Hmm, wonder if the HP48 can be used to control the K2? Mark, NK8Q From: Chris [EMAIL PROTECTED] Date: Mon Apr 18 07:54:35 CDT 2005 To: Jessie Oberreuter [EMAIL PROTECTED] Cc: Elecraft elecraft@mailman.qth.net, Kevin Rock [EMAIL PROTECTED] Subject: Re: [Elecraft] FORTH Are there any decent modern RPN calcs? I had a much loved HP32SII but I lost it when I moved house and have not been able to find a decent replacement. I have soft RPN calc on my palm, but I like proper buttons to push. Chris - VP8BKF and it will pring 27! Every modern RPN calculator should come with a built in FORTH :). ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.):
RE: [Elecraft] Now that we know
Jeeez, Doug, you're just a kid! I was a field engineer installing huge vacuum tube analog computers (EAI 231R among others) all over the East Coast and southern Canada. Customers included NASA, Pratt Whitney, Perkin-Elmer and just every Ivy League and Bush League university in that region. Digital stuff was sort of interesting in a primitive way. We interfaced them to analog computers to do the mundane number-crunching and flow control chores while a couple of analog computers accomplished the heavy lifting. I notice there is renewed interest in analog computing. Even with all the gigawhiz CPU's out there, it is hard to beat them for differential equations. They are also more intuitive to program for an engineer. BTW, dug up a 650 simulator you might try. I haven't played with it yet, but it might be interesting. http://infinitefish.com/650/ Eric KE6US -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Douglas Westover Sent: Monday, April 18, 2005 11:34 AM To: Robert McGwier; Elecraft Mail; Kevin Rock Subject: Re: [Elecraft] Now that we know Jeeez, all you guys are just kids! I cut my teeth on an IBM 650 as a Stanford undergrad. OS??? Listen, we entered the boot program through the front panel switch register. The 650 occupied three large cabinets in a heavily a/c'd room (it was GREAT in the summer!). 2000 10 digit words, plus sign, of drum memory with an incredible 96 ms add time! Languages? Well there was SOAP, IT and the state-of-the-art FORTRANSIT, which, of course was built on top of ITa very crude early attempt at FORTRAN! SOAP was an assembler that placed instructions on the drum in an optimum fashion to overcome the drum latency. From the 650 Stanford upgraded to a Buroughs 220 which had 10k decimal words of CORE memory! Also tape drives! BALGOL (Burough's dialect of ALGOL) was the language of choice though assembler was still heavily used for those of us who needed real efficiency. Dick Hamming was at Stanford at this time and chatting with him while waiting for output taught me more math and numerical techniques than I had ever learned in the classroom. We also had a (one of 3 built) IBM 797 which was essentially a 650 with core memory and was plug board programmed with a 402 printer plug board! Of course we went through the 7090, B5000 and 360 series. At that point I decided that my interest in computing/radio/electronics got me into real-time computing with HP-2100 series mini computers. I worked for the Stanford Radio Science Lab (and later SRI Remote Measurements Lab) developing control , data acq and processing/display systems for SRI's experimental/test bed OTH radar using single board computers from Ziatech. Man was that ever off topic! I'll mention something on topic. I saw a new Elecraft thing at the DX Convention in Visalia. Wow!! You QRO guys, start saving your pennies! 73, Doug W6JD - Original Message - From: Kevin Rock [EMAIL PROTECTED] To: Robert McGwier [EMAIL PROTECTED]; Elecraft Mail Elecraft@mailman.qth.net Sent: Sunday, April 17, 2005 2:04 PM Subject: Re: [Elecraft] Now that we know I never was a Vaxen. I've worked with dozens of operating systems over the years but not that one. I live in a cloistered world mostly writing my own software to go with the wire wrapped CPU and memory card kluge works I have as boxes :) One day I may try VMS and see what I've been missing. A break from the big three OSes is in order. I find Lin/Mac/Win constricting. There were other much better OSes in the early days of mini and micro computers. Kevin. KD5ONS On Sun, 17 Apr 2005 20:49:52 +, Robert McGwier [EMAIL PROTECTED] wrote: Now that we know I am an ancient computer person, I found a few links: http://www.google.com/search?hl=enq=email+exploderbtnG=Google+Sear ch Bob N4HY -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.9.15 - Release Date: 4/16/2005 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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:
[Elecraft] VCO Oscillator Test Problem
I am building K2 4856. I've run into a real problem. All tests have gone great until the VCO Oscillator. In doing the VCO Oscillator Test I get a reading of 0 AND Q1, Q2, Q3 and Q4 on the Control Board all got very hot. Hot to the touch. Not sure where to go with this one. Any suggestions? Jonathan Gottlieb WA3WDK ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] VCO Oscillator Test Problem
Jonathan, I can understand Q1 and Q2 getting hot from a shortcircuit somewhere on the 8T and 8R lines, but I just don't understand how Q3 and Q4 would get hot - they are just switches and should be fully conducting or fully non-conducting (and therefore should dissipate very little heat). Start by checking resistances on the 8T and 8R lines and search for that elusive solder bridge that I suspect is somewhere on the RF board or the Control Board. After you cure the cause of Q1 and Q2 heating excessively, you can move on to the VCO problem if it still exists. 73, Don W3FPR -Original Message- I am building K2 4856. I've run into a real problem. All tests have gone great until the VCO Oscillator. In doing the VCO Oscillator Test I get a reading of 0 AND Q1, Q2, Q3 and Q4 on the Control Board all got very hot. Hot to the touch. Not sure where to go with this one. Any suggestions? ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] VCO Oscillator Test Problem
W3FPR - Don Wilhelm wrote: I can understand Q1 and Q2 getting hot from a shortcircuit somewhere on the 8T and 8R lines, but I just don't understand how Q3 and Q4 would get hot - they are just switches and should be fully conducting or fully non-conducting (and therefore should dissipate very little heat). Yes, I recently was dealing with a shorted 8R and was quite convinced that all four transistors were hot. In fact it was just that Q2 was so hot it was heating up the other transistors nearbyand it was hard to tell Q2 was hotter than the others because it was too hot to touch for long enough to tell. 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_/[EMAIL PROTECTED]/ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] XG1 Report
Ron, AC7AC wrote: Someone I was chatting with recently said he had tested the S-meters of several receivers and found that 1 S-unit can equal anything from 3 dB to more than 6 dB. I had always assumed the target was 6 dB/S-unit. Apparently not so. == Years ago, there were two standards for S-meters. 1) The Collins standard was 100 uV = S9 and each S-unit was 8 dB. 2) The Hallicrafters standard was 50 uV = S9 and each S-unit was 6 dB. Manufacturers naturally adopted the Hallicrafters standard because the Collins standard resulted in a stingier S-meter (higher S-meter readings = better receiver, right? - No) It is rare, with the new transceivers currently on the market to find one that strictly adheres to the standard. Virtually every tranceiver today uses the 50 uV = S9 criterion, but the change per S-unit is much less than 6 dB. This results in a substantial signal such as 1 uV (which should read S3.5 on an accurate S-meter).not even budging the S-meter on most receivers today. In dB above S9, the S-meters most transceivers today seem to be fairly accurate. If all manufacturers complied with the standard to the letter, S-meter readings would be more meaningful. As it is now, they are useful only for reference readings such as when someone does an A/B check on his antennas with you. BTW, the values I posted originally were with the receiver preamp turned off in all cases. 73, de Earl, K6SE ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
