Re: [Elecraft] OT Handheld Antenna connector
In a message dated 25/10/05 14:38:28 GMT Daylight Time, [EMAIL PROTECTED] writes: Can someone tell me the name of the antenna connector on the newer VHF/UHF handhelds? Hi Chas, It is called an SMA. There are adaptors widely available that have the necessary SMA male plug fitted, the most common having a BNC female socket on the other end. Regards, Bob, G3VVT ___ 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] KPA100 J8 standoffs
Hi: Everything went together flush, square and true, if I do say so myself. I should have mentioned that I can get the standoff just barely threaded into the retaining nut, by a quarter turn or less. Not really enough to ensure that it stays fastened. It's the thickness of the plastic flange that is the main culprit. Do you know the manufacturer and part no of that connector? I would like to have a look at a drawing of it. jh ___ 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: OT Handheld Antenna connector
Tnx to all of those who responded. 72/73 Chas W1CG At 09:45 AM 10/25/2005, you wrote: In a message dated 25/10/05 14:38:28 GMT Daylight Time, [EMAIL PROTECTED] writes: Can someone tell me the name of the antenna connector on the newer VHF/UHF handhelds? Hi Chas, It is called an SMA. There are adaptors widely available that have the necessary SMA male plug fitted, the most common having a BNC female socket on the other end. Regards, Bob, G3VVT ___ 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] MicroHam microkeyer
Hmm. Pin 1 on a DB25 for RS-232 is protective ground. On a DB9, it's Data Carrier Detect... This URL doesn't point to the EIA standard, but is the most practical explanation of serial connector wiring I've found: http://www.lammertbies.nl/comm/cable/RS-232.html 73 de chris K6DBG Might want to rethink just one pin of that. A connection from the computer to pin 1 of the KIO2/KPA100's DE9 will probably create a ground loop. Only connections to pins 2, 3 and 5 are needed. Pin 1 is the ground for the non-RS232 stuff (Auxbus, etc.). On Oct 24, 2005, at 4:38 AM, Don Wilhelm wrote: If the Microkeyer has connections only to pins 1, 2, 3 and 5 of the 9 pin connector, one can safely plug it into the K2 directly. - Jack Brindle, W6FB ___ 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] MicroHam microkeyer
Chris, Yes, that is true - the SHELL on the DE9 connector is commonly listed as protective (or frame) ground. Many interfaces do not implement or use the Carrier Detect signal, but one never knows for certain unless you have detailed info on the interface used. That is also why the special computer to K2 cable does not attach pin 1 at the computer end. At the K2 end, pin 1 IS used as a ground to the K2 chassis, and it is important for ground loops prevention and reducing the coupling of extraneous signals into the K2 that this shield be carried to the computer end (but not terminated there). The K2 9 pin connector, like many others, is NOT an RS232 serial port, and I do not believe any claims otherwise have been made. It is just a connector that happens to have 2 RS232 signals (3 with signal ground) included in its set of signals. There is no standard for the connector itself, it is used in a variety of applications. So unless a connector is designated as a serial port, make no assumptions that it really is - the K2 connector is labeled on th erear panel as AUX I/O, and that is truly what it is - a connector with auxiliary inputs and outputs, and must be interpreted in the most generalized context of that labeling. 73, Don W3FPR -Original Message- Hmm. Pin 1 on a DB25 for RS-232 is protective ground. On a DB9, it's Data Carrier Detect... This URL doesn't point to the EIA standard, but is the most practical explanation of serial connector wiring I've found: http://www.lammertbies.nl/comm/cable/RS-232.html 73 de chris K6DBG ___ 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] Testing
Found out the hard way, I can't send a picture thru the reflector. Now just trying to see if I am back to normal. Happy Hammin' Jim, W4ATK ___ 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] ARCBS Spookfest - PSK31 Award!
Hello all, Looks like the CQWWSSB Contest will be on the same time as the Spookfest. Don't forget that CW and PSK31 modes are good for this event too. Look for me at a few Berks County, PA covered bridges and at home this weekend. I hope to work Ivor, M5PLY, on psk31 too! Here's a list of awards: High Overall Plaque High CW Certificate High SSB Certificate High PSK31 Certificate High QRP Certificate http://www.arcbs.org/ARCBSSpookfest2005.html p.s. all you goblins are worth 6 pts!**ARCBS Members 3pts**Witches 2pts. If you activate a bridge, apply for a goblin number for next year. 72/73, Ed, WA3WSJ ARCBS Founder ___ 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] T1 tuner issue
Hello All, I just got my SW-20+ working, and I ran into an antenna question. Currently, I don't have a 20 meter antenna, so I thought I would try to use my 40 meter dipole with it and just use my Elecraft T1 to tune it to 20m. It it didn't work too well...I got an SWR around 2.5. Is this to be expected, or could there be an issue with the T1? The T1 sure sounds like it is working hard to get to the 2.5 (relays are busy). My antenna ignorance is probably showing, but since 20 is a direct multiple of 40, I thought the T1 wouldn't have a problem matching. So I guess my question is: Is something wrong with my T1, or do I just need to put up a 20meter antenna? 72, Kurt - ae6uj __ Yahoo! Mail - PC Magazine Editors' Choice 2005 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] T1 tuner issue
Kurt: Feed the same antenna with either 300 twin lead or 450 Ohm ladder line. Connect a 4 to 1 balun at the shack end of the feed line, then connect the other end of the balun to the output terminal of the tuner. It will then tune and radiate RF quite well! 73, Don WA9TGT / Donnie Garrett / Muncie, IN ARCI #6447, ARS #1717, AmQRP, ECI-QRP #001 (Indiana) Drake 2B, R4A, R4B, K2 #3186, K1 #1806 LDG Z-11 Auto Tuner, 102' CF Zepp using glass doobies! www.wa9tgt.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] T1 tuner issue
Kurt, It all depends on the feedline length (in electrical wavelengths). If your feedline is anywhere near a multiple of a half wavelength at 20 meters, that behavior is not unusual. The T1 tuner (and most similar tuners) do not work well if the impedance presented at the shack end of the feedline is quite high. If you add or subtract a bit of feedline length (1/8 wavelength at a time is my suggestion), you will likely see better results. I will go into all the reasons why should you ask, but try changing the feedline length and see if it improves things. 73, Don W3FPR -Original Message- Hello All, I just got my SW-20+ working, and I ran into an antenna question. Currently, I don't have a 20 meter antenna, so I thought I would try to use my 40 meter dipole with it and just use my Elecraft T1 to tune it to 20m. It it didn't work too well...I got an SWR around 2.5. Is this to be expected, or could there be an issue with the T1? The T1 sure sounds like it is working hard to get to the 2.5 (relays are busy). My antenna ignorance is probably showing, but since 20 is a direct multiple of 40, I thought the T1 wouldn't have a problem matching. So I guess my question is: Is something wrong with my T1, or do I just need to put up a 20meter antenna? 72, Kurt - ae6uj ___ 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] T1 tuner issue: try shorting the feedline, working against ground
Kurt, The impedance of your 40 m dipole on 20 m is probably sky-high; 2.5:1 may be the best you can hope for. This probably won't hurt the rig, and the power loss due to the high SWR is probably less than a dB assuming the rig doesn't roll back power (or clip the voltage at the collector of its PA). Another thing you can try is to short the coax center connector to its shield. This is an old trick for extending the matching range of an antenna. Connect this to the T1's hot lead, then connect the T1's ground to a ground counterpoise. The impedance will likely be very different, giving the ATU a chance to match it. It will be slightly noisier than a dipole, and the directivity will change, but you may not mind. 73, Wayne N6KR --- 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] T1 tuner issue: try shorting the feedline, working against ground
A variation on the idea proposed by Wayne is to add an inductor or capacitor in series with the center wire in the feeder. That will change the impedance presented to the tuner. You may need to experiment a bit to find a value that the ATU can match - as indicated by a low SWR - but you won't have to fiddle with a separate ground system. You whatever you have handy - a 20 to 50 pf cap or a dozen turns of hook-up wire around a 35 mm plastic film container. You aren't looking for any exact value, just enough reactance to move the impedance into a range the T1 can match. Ron AC7AC -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of wayne burdick Sent: Tuesday, October 25, 2005 4:32 PM Cc: Elecraft Reflector; QRP-L; Kurt Loken Subject: [Elecraft] T1 tuner issue: try shorting the feedline,working against ground Kurt, The impedance of your 40 m dipole on 20 m is probably sky-high; 2.5:1 may be the best you can hope for. This probably won't hurt the rig, and the power loss due to the high SWR is probably less than a dB assuming the rig doesn't roll back power (or clip the voltage at the collector of its PA). Another thing you can try is to short the coax center connector to its shield. This is an old trick for extending the matching range of an antenna. Connect this to the T1's hot lead, then connect the T1's ground to a ground counterpoise. The impedance will likely be very different, giving the ATU a chance to match it. It will be slightly noisier than a dipole, and the directivity will change, but you may not mind. 73, Wayne N6KR --- 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: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Oh No!! Not another K2 Control Program!
What can I say. I wrote this one for me and BandScope fit real nicely into the options panel. If you want to see it take a look at http://webpages.charter.net/w4atkweb. Hey it ain't a fancy site, but it was free from my isp. Happy Hammin', Jim W4ATK ___ 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] Hand Held PC Ham Programs
Hi everybody! Does any one know of a rig control program that will run on my iPAQ hand held PC? If not, is there a logging program available for my little handsome handful? Best regards, Bob K7HBG ___ 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] Hand Held PC Ham Programs
Look at the CTR-Remote link in the software section of the Elecraft website. If your iPAQ runs Pocket PC software, it looks like what you need. And it looks pretty spiffy too. Larry N8LP [EMAIL PROTECTED] wrote: Hi everybody! Does any one know of a rig control program that will run on my iPAQ hand held PC? If not, is there a logging program available for my little handsome handful? Best regards, Bob K7HBG ___ 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] Oh No!! Not another K2 Control Program!
I like it. : ) Tony W7GO James T. Jim Rogers, W4ATK wrote: What can I say. I wrote this one for me and BandScope fit real nicely into the options panel. If you want to see it take a look at http://webpages.charter.net/w4atkweb. Hey it ain't a fancy site, but it was free from my isp. Happy Hammin', Jim W4ATK ___ 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] Re: T1 tuner issue
Hello All, Thanks to everyone who responded. I received a lot of interesting suggestions that should be fun to experiment on. My final solution will probably be to add some additional elements on my current dipole for 20m...but it might be fun to fool around with the feed lines a bit before then. Thanks for the education. I think it is time for me to crack and antenna book and read it though. Regards, Kurt - ae6uj __ Yahoo! FareChase: Search multiple travel sites in one click. http://farechase.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
