Re: [Elecraft] 50 vs 75 ohm N-connectors
On Ken Kopp, K0PP's advice (nice call by the way), I checked for some markings. With bright light and a magnifier I find it's an Andrew 42W connector, of which there is little info on the internet. Except that it's for use with hardline, 1/2" I believe. But with some more poking around on the net I found the following: http://www.amphenolrf.com/products/CatalogPages/typen_catalog.pdf Page 2 of the pdf shows the length and diameter of the center pin! So tomorrow I'll go mike mine up and from that i'll know what impedance connector I have! Thanks for the background info. I think maybe I can adapt it for use with RG-213 / LMR400 / 9913F if it is a 50 ohm job. 73, Lenny W2BVH ___ 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] 50 vs 75 ohm N-connectors
Not sure you have anything to do the measurement, but the center pin of a 50 ohm type n male connector should be 0.0640 inches in diameter (this is the last part of the pin before it tapers to a blunted point). A 75 ohm pin will be 0.0353 inches. It's easy to tell if you have one of each, but unless you've seen them before it may not be obvious. If you can remove the center pin and have a known 50 ohm female jack, insert the pin into the center conductor of the jack. If it goes in easily and seems loose, the pin is a 75 ohm. The pin should require a small amount of force to spread the fingers of the jack. As was mentioned before, don't try this with a 75 ohm jack since you will ruin the jack if you push a 50 ohm pin into it. No problem with a 50 ohm jack since it is too big for the smaller 75 ohm pin. Ken K6MR -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of w2bvh Sent: Saturday, October 14, 2006 8:28 PM To: Elecraft@mailman.qth.net Subject: [Elecraft] 50 vs 75 ohm N-connectors I just picked up some fine looking heavily built male N connectors at a hamfest. Before I mount one onto the antenna end of a cable and send it up 18 feet over my roof I'd like to make sure it's a 50 ohm "N". Does someone know how to tell a 50 ohm from a 75 ohm "N"? Thanks in advance for your help. 73, Lenny W2BVH ___ 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: Indoor antenna for KX1...
Thom R LaCosta wrote: I used #26 enamel wire to form a complete loop around the ceiling molding Am I guessing correctly that a similar arrangement would work with the K2? Yes. Actually better, since the KAT2 has a wider matching range than the KXAT1. What were the room dimensions, or are they not that critical? Around 12 x 12, but not critical. 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] Elecraft CW Net Announcement
Good Evening, This week has been a busy one. It did not help matters when my back decided to started to spasm. That made putting on my socks quite a chore! But things are getting better. Today I carried a couple loads of wood into the house and sealed a few holes against the predatory squirrel population. They are dead set on living in my roof. I've sealed one hole and another but they seem to find any weakness and keep me hopping to fill it. I feel like Bill Murray in Caddy Shack if my memory serves me correctly. If only Sam were a few years younger they'd be shaking to their little furry paws! Currently I am tuned to 40 meters as I have been for the last few hours. DX appears from around the globe. Now if only tomorrow's propagation reports are as good. It may be that the RF won't land before it gets into DX territory but one can never tell. Sunspot number? Zero! That has never stymied my calling CQ though. As ever I'll send out my call and at least one other operator will come back. I have not been skunked in all my years of calling. I don't think it will start tomorrow. Now for those squirrels. If they would kindly leave the domicile I could make stew. I would rather not shoot a hole in my roof. Makes finding the game more difficult. However, there is a Sawzall at the ready ;) If you feel you have the time, your rig is itching for a QSO, and you have your antenna waxed come join the fun. Tell me your methods for squirrel eradication or simply give me a recipe for squirrel stew. I am all ears! Please join us: Sunday 2300z (Sunday 4pm PDT) 14050 kHz Monday 0200z (Sunday 7pm PDT) 7045 kHz Until tomorrow, Kevin. KD5ONS P.S. I forgot. On Thursday I got to belay a 24 foot helium balloon up into the blue. We took photos of the Columbia River near Deer Island. Mergansers, gulls, eagles, herons, kingfishers, and many, many geese stopped by to watch. A few container ships with tugs attached made me quick step up the bank while attached to the balloon! KJR ___ 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: [Elecraft] 50 vs 75 ohm N-connectors
Jim's correct - There ARE differences between 75 and 50 ohm coax connectors ... especially Type N. 73! Ken Kopp - K0PP [EMAIL PROTECTED] or [EMAIL PROTECTED] - Original Message - From: Jim Price To: 'Larry' ; 'w2bvh' Cc: Elecraft@mailman.qth.net Sent: Sunday, October 15, 2006 4:19 AM Subject: RE: [Elecraft] 50 vs 75 ohm N-connectors Not so. There is a very real physical difference between 50-ohm and 75-ohm type N connectors. The 50-ohm male pins are bigger than the 75-ohm pins and will damage a 75-ohm female connector. Likewise if a 75-ohm male is mated with a 50-ohm female there will not be good electrical contact. 73, Jim - N4ST -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Larry Sent: Saturday, October 14, 2006 23:56 To: w2bvh Cc: Elecraft@mailman.qth.net Subject: Re: [Elecraft] 50 vs 75 ohm N-connectors w2bvh wrote: Does someone know how to tell a 50 ohm from a 75 ohm "N"? The impedance is a characteristic of the coax cable, not the connector. What does matter is what coax cable(s) the N connectors are designed for, such as RG8, RG58, RG214, etc. Take a look at http://www.smelectronics.us/typencableconnectors.htm. This might help you match your connectors to their appropriate cables. 73 Larry KB5DXY ___ 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: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] 50 vs 75 ohm N-connectors
Not so. There is a very real physical difference between 50-ohm and 75-ohm type N connectors. The 50-ohm male pins are bigger than the 75-ohm pins and will damage a 75-ohm female connector. Likewise if a 75-ohm male is mated with a 50-ohm female there will not be good electrical contact. 73, Jim - N4ST -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Larry Sent: Saturday, October 14, 2006 23:56 To: w2bvh Cc: Elecraft@mailman.qth.net Subject: Re: [Elecraft] 50 vs 75 ohm N-connectors w2bvh wrote: > > Does someone know how to tell a 50 ohm from a 75 ohm "N"? > > The impedance is a characteristic of the coax cable, not the connector. What does matter is what coax cable(s) the N connectors are designed for, such as RG8, RG58, RG214, etc. Take a look at http://www.smelectronics.us/typencableconnectors.htm. This might help you match your connectors to their appropriate cables. 73 Larry KB5DXY ___ 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] 50 vs 75 ohm N-connectors
w2bvh wrote: Does someone know how to tell a 50 ohm from a 75 ohm "N"? The impedance is a characteristic of the coax cable, not the connector. What does matter is what coax cable(s) the N connectors are designed for, such as RG8, RG58, RG214, etc. Take a look at http://www.smelectronics.us/typencableconnectors.htm. This might help you match your connectors to their appropriate cables. 73 Larry KB5DXY ___ 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] Carrying The KX1 With Batteries Installed
I carry my KX1 with me whenever I am kayak camping and always have a set of Lithium AA cells in it with a small thin piece of plastic between two of the cells to prevent accidental discharge. My operating while camping is from an external battery stashed seperately in the kayak. My rig, a wire antenna and everything I need to operate as well as food for a couple of days are packed into a wide mouth Gallon cooler tied to me just in case I have an accident and I loose the kayak and gear. It floats and I always wear my PFD. ___ 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] 50 vs 75 ohm N-connectors
I just picked up some fine looking heavily built male N connectors at a hamfest. Before I mount one onto the antenna end of a cable and send it up 18 feet over my roof I'd like to make sure it's a 50 ohm "N". Does someone know how to tell a 50 ohm from a 75 ohm "N"? Thanks in advance for your help. 73, Lenny W2BVH ___ 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] When do you use fast AGC?
Hi gang, The K2 is the first rig I've had that has adjustable AGC. Under what conditions would one benefit from using fast AGC? It seems that slow AGC is easier on the ears on CW. Thanks & 73, Jeff WB5GWB Long Island, NY ___ 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: Alternator line filter
-Original Message- From: Ken Kopp [mailto:[EMAIL PROTECTED] Caution ... are you SURE you're hearing alternator noise and NOT the fule pump noise that Ford PU's are infamous for? I have one, BTW. If it's indeed alternator noise, take a look (Google) 'NEWMAR'. They have an extensive line of quality products. 73! Ken Kopp - K0PP [EMAIL PROTECTED] or [EMAIL PROTECTED] Hi Ken, Noise rises in frequency as I press on the gas pedal. I have also have read about the electric fuel pump noise but haven't detected it yet. Yes, I have seen the Newmar filters. They are very nice. I have seen one for at little as $125. http://www.tessco.com/products/displayProductInfo.do?sku=99967&eventPage=1 That's why I want to built one myself. If I can figure out what would be a good toroid core say in the T240 size, I think I can build one as nice for about $30. I might need to stack three, or put several wound toroids in series. That’s why I was looking for some advice since I am not good at picking out the correct toroid mix from the spec sheets. There are some toroids recommended by WA1MVX at http://www.sanantoniohams.org/Tips/whine.htm They are made by SIFERRIT and are ferrite, 64mm O.D., and type 87 material. http://www.surplusmaster.com/prods/comp/misc1.htm However, I don't know if a better material is available and I don’t know if I want to buy 20 of them. Regards, Steve, W2MY -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.408 / Virus Database: 268.13.4/475 - Release Date: 10/13/2006 ___ 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] OT: Alternator line filter
Caution ... are you SURE you're hearing alternator noise and NOT the fule pump noise that Ford PU's are infamous for? I have one, BTW. If it's indeed alternator noise, take a look (Google) 'NEWMAR'. They have an extensive line of quality products. 73! Ken Kopp - K0PP [EMAIL PROTECTED] or [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] K2 build: receiver problem....it does not work.
Chuck, Yes, the problem you are having is most likely related to the operation of Control Board Q1 (or Q2). These are not a switching power supply, but they do serve as switches to direct the 8 volts depending on whether the K2 is trying to transmit of receive. Q1 and Q2 are not likely your problem - the problem is most likely with an unsoldered connection or a zapped 2N7000 JFET (Q4). Read on for more info: The control for Q1 and Q2 comes from Q3 and Q4, and right now, I would expect that the drain of both of them has almost 8 volts DC on it. So check the gate of Q3 and Q4 - if the K2 is in receive, the gate of Q4 should be near 5 volts - which should turn Q4 on and make it conduct (producing a low voltage at its drain). Now that you have a bit of understanding about the circuit, you should be able to discover the problem quickly - if the gate of Q4 is not at a high state (3.5 to 5 volts), then the problem is in the RX signal from the microprocessor, but if Q4 gate is indeed at a high level, the microprocessor is doing its job and Q4 is not conducting as it should - likely because it was damaged with static when it was installed, 2N7000 JFETs are prone to static damage and must be handled with good anti-static practice. If you are only at the part 2 alignment and test, you should have an uninstalled 2N7000 that you can borrow should you need a replacement. An email to [EMAIL PROTECTED] should bring one in your mail within a week. 73, Don W3FPR > -Original Message- > > I am at the end of the part 2 alignment and test (everything up to this > point is checked out and working to the level spec'd in the manual) . I > should be hearing something with my XG2 set for 7040, but don't. > > I am following the trouble shooting section and have found that I do not > have 8 volts at [the right side of D6] on the control board. I followed > this back to pin 22 (8R) on J7, which also does not have 8 volts on it, > but pin 6 of J7 (8A) does have 8 vols. > > On the control board the 8 volt and 5 volt regulators are working and I > have 8 volts on the middle pin of Q1 and Q2 (the base), but don't on the > collector. I am just a want to be EE (at best) but believe that I may > have a bad components. > > However, this is a switching power circuit, so I not sure if there is > supposed to be, but it seems like their should in order for 8R to have > the 8 volts for the receiver to be powered. > > Any help or advice would be appreciated. > > Thanks... > ___ 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] Re: Indoor antenna for KX1...
Yup, that was me. I used #26 enamel wire to form a complete loop around the ceiling molding. The best configuration was with the loop shorted and a single wire running down the corner of the room to the radio. You'll also need a ground counterpoise wire -- I used about 16' of wire laid around the edge of the walls, at the baseboard. Everything is held in place with push-pins, which I color-matched to the paint in the room. Am I guessing correctly that a similar arrangement would work with the K2? What were the room dimensions, or are they not that critical? thanks 73,Thom-k3hrn www.zerobeat.net Home of QRP Web Ring, Drakelist home page,Drake Web Ring, QRP IRC channel, Drake IRC Channel, Elecraft Owners Database www.tlchost.net/hosting/ *** Web Hosting as low as 3.49/month ___ 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: [QRP-L] Items FS
The filter has been sold pending payment. Brent - Original Message - From: "Brent Sutphin" <[EMAIL PROTECTED]> To: "QRP-L" <[EMAIL PROTECTED]>; Sent: Saturday, October 14, 2006 3:39 PM Subject: [QRP-L] Items FS I have the following items for sale. Elecraft XG-1 Receiver Test Oscillator. Oscillator works FB and is in like new condition. $39 shipped. Rock Mite Audio Filter from KD1JV. The filter is built but never used. Comes with instruction sheet. $15 shipped. If anyone is interested in these items please contact me off list. Thanks Brent WB4X __ QRP-L mailing list Home: http://mailman.qth.net/mailman/listinfo/qrp-l Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[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] K2 build: receiver problem....it does not work.
I am at the end of the part 2 alignment and test (everything up to this point is checked out and working to the level spec'd in the manual) . I should be hearing something with my XG2 set for 7040, but don't. I am following the trouble shooting section and have found that I do not have 8 volts at [the right side of D6] on the control board. I followed this back to pin 22 (8R) on J7, which also does not have 8 volts on it, but pin 6 of J7 (8A) does have 8 vols. On the control board the 8 volt and 5 volt regulators are working and I have 8 volts on the middle pin of Q1 and Q2 (the base), but don't on the collector. I am just a want to be EE (at best) but believe that I may have a bad components. However, this is a switching power circuit, so I not sure if there is supposed to be, but it seems like their should in order for 8R to have the 8 volts for the receiver to be powered. Any help or advice would be appreciated. Thanks... ___ 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] K2 and SoftRock40
"Has anyone done this?" Hi David, It's in German but, it's what you asked for: http://dj9cs.raisdorf.net/K2-Panorama.html Tom, AK2B ___ 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] OT: Alternator line filter
Hi all, I need to make or purchase an alternator line filter for my Ford F-150 pickup truck. I have searched on the net for a design that would specify the toroid mix and other details but have not found anything very good so far. What mix and size toroid would you use in the DC line to filter out the alternator whine? Regards, Steve Pituch, W2MY -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.408 / Virus Database: 268.13.4/475 - Release Date: 10/13/2006 ___ 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] Accuracy of W1 wattmeter
Vic, K2VCO wrote: "The new W1 wattmeter is spec'd to provide 0.5 db accuracy. Is this 0.5 db of full scale or of the actual reading? If the former, then I figure that the reading at 5 watts would be plus or minus about 1.8 watts. If the latter, about 0.6 watts (I am not good at doing this stuff in my head -- is this right)?" == I don't know what the FS reading of the W1 wattmeter is, but 5 watts +/- 0.5 db would be 4.456 to 5.61 watts, or -0.544 and +0.61 watts. 73, de Earl ___ 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] Re: Indoor antenna for KX1...
Or make sure she thinks it was an accident...:) Tom wb2qdg k2 1103 -- Daddy, why do they call it the "World Series" if its always played in the Bronx? - Original Message - From: "Leigh L Klotz, Jr." <[EMAIL PROTECTED]> To: "wayne burdick" <[EMAIL PROTECTED]>; "Steve Banks" <[EMAIL PROTECTED]> Cc: Sent: Saturday, October 14, 2006 12:06 AM Subject: Re: [Elecraft] Re: Indoor antenna for KX1... I tried this, holding the wire up with clear pushpins.. The wire fell down and my wife walked into it. She accused me of trying to strangle her. Don't make my mistakemake sure it doesn't come down accidently. Leigh/WA5ZNU On Fri, 13 Oct 2006 3:07 pm, wayne burdick wrote: Yup, that was me. I used #26 enamel wire to form a complete loop around the ceiling molding. ___ 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] Accuracy of W1 wattmeter
The new W1 wattmeter is spec'd to provide 0.5 db accuracy. Is this 0.5 db of full scale or of the actual reading? If the former, then I figure that the reading at 5 watts would be plus or minus about 1.8 watts. If the latter, about 0.6 watts (I am not good at doing this stuff in my head -- is this right)? -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___ 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] 80 m CW and Digital Operation: It's a new ballgame!
The FCC Report and Order 06-149 has thrown us a curve by extending the Amateur Extra Class phone band down to 3600 kHz (far more than the ARRL had requested), meaning that practical CW and digital operations, which have had lots of spectrum to play with on 80 m, will soon have to squeeze into the bottom 100 kHz of the 80 m band. We have to live with this new reality. We need to negotiate amongst ourselves so that our turf battles take place off the air before Report and Order 06-149 takes effect. We need to develop a band plan which will serve all USA 80 m operators, and we need to start immediately. The band plan must not actually exclude CW stations from operating anywhere from 3500 kHz to 4000 kHz. For example, cross-mode communications between CW stations and stations operating in other modes must be recognized as legitimate. Here are the major issues as I see them: 1) On CW and digital contesting weekends, everywhere from 3500 kHz to 3600 kHz will be dominated by USA contesters unless contest sponsors decide to limit 80 m operations by USA stations to a substantial, but limited, portion of that 100 kHz AND to enforce those limits by disqualifying USA contesters who stray outside of them. Major contest sponsors like ARRL, CQ Amateur Radio, JARL, RSGB and RAC need to consult with one another immediately and come up with a common proposal. 2) A CW DX window needs to be designated and respected by USA operators seven days a week, and most especially during contest weekends. 3) CW nets whose schedules include weekend operation need to be protected from both CW and digital contesting. 4) Digital net managers need to decide whether or not they want protection during digital contest weekends. For example, PSK-31 operations typically center on 3580.15 kHz in the 80 m band. Do the operators who manage PSK-31 nets want to accommodate fixed-frequency stations? If so, then they either will have to accept crowding during digital contest periods, or in effect exclude fixed-frequency PSK-31 stations from participating in those contests. This proposal assumes that they will tolerate disruption of their nets during digital contest weekends. 5) Specialized groups like QRPers and FISTS need calling frequencies. They now occupy the vicinity of: a. QRP: 3560 kHz b. FISTS: 3528 kHz Even though those frequencies are below 3600 kHz, I think it is important that those groups not insist on retaining those frequencies, but agree to be part of the negotiations which will produce a comprehensive 80 m CW band plan which will accommodate their interests. 6) Many 80 m CW nets which now operate above 3600 kHz will have to relocate below the phone band. Because of reduced total spectrum, some nets which currently operate below 3600 kHz will need to relocate as part of a new band plan. Some Canadian and Latin American CW nets will also best be served by changing frequency. I think that it will work much better if all CW nets in ITU/IARU Region 2 operate outside of the contesting and digital sub-bands. 7) Digital operators are important users of the 3500 kHz to 3600 kHz segment of the 80 m band. Since some digital operators will have little or no CW skills, and since few CW operators are able to decode digital transmissions while operating CW, digital and CW operations must be accommodated and be confined to specific portions of the band. This is an especially important consideration when priority or emergency traffic is being passed on CW and digital traffic-net frequencies. I think our first step is to think through how much spectrum is needed by the various groups. Almost all 80 m operators currently using the 3500 kHz to 3600 kHz spectrum will need to prepare for a shift in operating frequencies. Yes, that includes QRPers like me who will have to buy new crystals for rock-bound 80 m CW rigs! Very likely my Rock-Mite 80, which now operates in the vicinity of 3560 kHz, will have to be modified to operate near a new QRP calling frequency. Similarly, fixed-frequency digital transceivers may have to be modified. We all need to ask for a piece of the pie without demanding that our piece will be the exact frequencies which we now habitually occupy. In order to get the discussion going, let me offer a spectrum allocation proposal: CW DX window: 5 kHz [protected from all contesting] CW contesting: 60 kHz Digital contesting: 40 kHz Digital nets: 5 kHz [whether protected from digital contesting or not needs to be decided by digital net managers] Digital ragchewing: 15 kHz High-speed CW (say, 30 WPM and faster) ragchewing: 20 kHz High-speed CW nets: 5 kHz [protected from all contesting] Slow-to-medium-speed CW ragchewing: 60 kHz Slow-to-medium-speed CW nets: 15 kHz [partially shared with specialized groups] Specialized group operations like FISTS, QRP and perhaps County Hunters: 5 kHz [shared with slow-to-medium-speed CW nets] Obviously, that
[Elecraft] Items FS
I have the following items for sale. Elecraft XG-1 Receiver Test Oscillator. Oscillator works FB and is in like new condition. $39 shipped. Rock Mite Audio Filter from KD1JV. The filter is built but never used. Comes with instruction sheet. $15 shipped. If anyone is interested in these items please contact me off list. Thanks Brent WB4X ___ 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 Relay problem
This is also just about a common interval since assembly for a missed solder connection to show up producing an intermittent or open connection as oxidation builds up on the unsoldered metal surfaces. Ron AC7AC -Original Message- Graham, The fact that the relays did not cycle to reset with the control board removed is not likely an indication of the problem. If I recall, this 'feature' does not work since the KIO chip firmware was reworked to add 60 meters. That is only a guess, but I too tried this step to reset the relays in the near past and found it did not work. You may want to try doing continuity checks through the relay coils from the top of the U1 socket. If all looks well there, the relay may be 'sluggish'. Of course, it may be that there has been a bit of oxidation on the socket or pins of U1 and simply removing and reseating U1 will correct that condition, or it could be that there is a marginal solder connection on some path (that is actually the most likely possibility). All in all, try using the schematic and attempt continuity checks that include the greatest possible number of soldered connections will go a long way toward detecting marginal components and solder joints. Many bad solder connections seem to work fine until 6 month to a year after assembly and then 'mysteriously' fail, do not overlook that possibility. Component failure does happen but it is rare. 73, Don W3FPR > -Original Message- > > Gents, > I have a K2 Serial 5375 which has performed perfectly since > completion 5 months ago, unfortunately it has recently developed a > fault I need some advice on. The fault which causes the rig to > function on 160m 30m &15m only is intermittent.I have found when the > fault is active that K13 remains in the reset state, I can usually > clear the fault by making several band changes or cycling the power a > few times which puts K13 in the proper state for the selected band. I > have checked all soldering around RF U1 & the relays to no avail. When > I removed the control board to reset the relays I found powering on > did not cycle the relays as per fault finding guide.I feel the problem > is probably U1 or k13 but would appreciate advice on isolating the > fault further. > > Regards Graham G4cpd > ___ 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] k2, freq readout calibration
Bob, While directly attaching a counter without a 10X probe can pull the frequency of the measured circuit (and that can also happen with a 10X probe), the beauty of comparing the resulting external counter frequency count with the K2 internal frequency count is that it does not depend on the exact frequency of the frequency source (in this case TP1). Even if the external counter (or the internal counter for that matter) does pull the frequency at TP1, that frequency is not the parameter being adjusted - one is adjusting the clocking frequency for the K2 internal counter, and if that clock is set so both counters read the same, the internal counter will be almost as accurate as the external counter (within the uncertainty range of the last display digit). I have also cautioned about attempting to measure the 4 MHz oscillator directly - the indirect methods recommended are more accurate and less prone to errors similar to those you mentioned. It may also turn out that the 'real' frequency for the 4 MHz oscillator is a few Hz different from the nominal frequency, but even if that is true, it is circumvented by measuring the displayed frequency rather than the master clocking reference itself, and any other hidden variables are also compensated out of the 'equation'. 73, Don W3FPR > -Original Message- > > Hi Carel, > > Have a care connecting an extra frequency counter in parallel > with the K2 > counter as the loading capacitance of some counters may pull the > readings off > what they really are. The K2 frequency counter via the supplied > probe gives > relatively light loading on the circuits you are measuring. The > extra frequency > counter may not cause a problem in the case of TP1, but better > to play safe > and isolate the parallel frequency counter with a high impedance probe. > > I fell into this trap when setting my K2 4MHz control board clock > oscillator > with a Racal Dane counter. This has a ovened xtal clock, hence retains a > fair degree of accuracy from calibration. However the extra load > capacitance of > the frequency counter input undid all that and gave an erroneous > reading. A > high impedance scope probe gave enough level to operate the > frequency counter, > yet still provided sufficient isolation not to affect the K2. > > May not be causing problems in your case, but something to be aware of. > > 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 > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.408 / Virus Database: 268.13.3/474 - Release Date: 10/13/2006 > > ___ 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] CCW
Has anybody done CCW with the k2? ___ 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 Relay problem
Graham, The fact that the relays did not cycle to reset with the control board removed is not likely an indication of the problem. If I recall, this 'feature' does not work since the KIO chip firmware was reworked to add 60 meters. That is only a guess, but I too tried this step to reset the relays in the near past and found it did not work. You may want to try doing continuity checks through the relay coils from the top of the U1 socket. If all looks well there, the relay may be 'sluggish'. Of course, it may be that there has been a bit of oxidation on the socket or pins of U1 and simply removing and reseating U1 will correct that condition, or it could be that there is a marginal solder connection on some path (that is actually the most likely possibility). All in all, try using the schematic and attempt continuity checks that include the greatest possible number of soldered connections will go a long way toward detecting marginal components and solder joints. Many bad solder connections seem to work fine until 6 month to a year after assembly and then 'mysteriously' fail, do not overlook that possibility. Component failure does happen but it is rare. 73, Don W3FPR > -Original Message- > > Gents, > I have a K2 Serial 5375 which has performed perfectly since > completion 5 months ago, unfortunately it has recently developed a fault > I need some advice on. The fault which causes the rig to function on > 160m 30m &15m only is intermittent.I have found when the fault is active > that K13 remains in the reset state, I can usually clear the fault by > making several band changes or cycling the power a few times > which puts K13 in the proper state for the selected band. > I have checked all soldering around RF U1 & the relays to no avail. When I > removed the control board to reset the relays I found powering on did > not cycle the relays as per fault finding guide.I feel the problem is > probably U1 or k13 but would appreciate advice on isolating the > fault further. > > Regards Graham G4cpd > ___ 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] K2 Relay problem
Gents, I have a K2 Serial 5375 which has performed perfectly since completion 5 months ago, unfortunately it has recently developed a fault I need some advice on. The fault which causes the rig to function on 160m 30m &15m only is intermittent.I have found when the fault is active that K13 remains in the reset state, I can usually clear the fault by making several band changes or cycling the power a few times which puts K13 in the proper state for the selected band. I have checked all soldering around RF U1 & the relays to no avail. When I removed the control board to reset the relays I found powering on did not cycle the relays as per fault finding guide.I feel the problem is probably U1 or k13 but would appreciate advice on isolating the fault further. Regards Graham G4cpd ___ 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, freq readout calibration
In a message dated 14/10/06 09:01:37 GMT Daylight Time, pc5m, Carel" <[EMAIL PROTECTED]> writes: Verified setting of C22 with both methods (parallel freq counter on TP1 and measuring the offset of TP1 and TP2 with a 10MHz signal). --- Hi Carel, Have a care connecting an extra frequency counter in parallel with the K2 counter as the loading capacitance of some counters may pull the readings off what they really are. The K2 frequency counter via the supplied probe gives relatively light loading on the circuits you are measuring. The extra frequency counter may not cause a problem in the case of TP1, but better to play safe and isolate the parallel frequency counter with a high impedance probe. I fell into this trap when setting my K2 4MHz control board clock oscillator with a Racal Dane counter. This has a ovened xtal clock, hence retains a fair degree of accuracy from calibration. However the extra load capacitance of the frequency counter input undid all that and gave an erroneous reading. A high impedance scope probe gave enough level to operate the frequency counter, yet still provided sufficient isolation not to affect the K2. May not be causing problems in your case, but something to be aware of. 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
[Elecraft] K2 and SoftRock40
The facilities available to SoftRockers are quite astonishing and will quite literally revolutionise our radio experience and you can use practically any radio. I've read that an FT1000 is being adapted using a SoftRock 40 with new xtal. VK6VZ is spear-heading this fabulous idea. I shall be attempting to do the same on my K2. Has anyone done this? There looks to be enough room inside the K2 to fit the SoftRock 40, but I think a shielded box would be good, so that will need some engineering. Initially it will be prudent to put the unit outside. David G3UNA ___ 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
