Re: [AMRadio] How to reply to someone else's post
Hi Brian... Just saying hello... -73- John WB5CW -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of WA5AM Sent: Thursday, April 23, 2009 1:55 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] How to reply to someone else's post On Thu, Apr 23, 2009 at 3:48 PM, D. Chester wrote: > Users of this reflector need to review the proper etiquette for > responding to other people's messages. > > Amen Don. This has been gone over time and time again, and the point > just never seems to hit home with some. Thanks, Brian / wa5am __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Lots of AM on 7160 Right Now!
Mike... That's good to hear and I wish my radio had been on... I'm in Eastern Oregon and my son is at Millsaps graduating on May 9... I've got to get him into our wonderful hobby... To join his 3 uncles. -73- John WB5CW -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Mike Duke, K5XU Sent: Monday, March 30, 2009 5:57 PM To: Discussion of AM Radio Subject: [AMRadio] Lots of AM on 7160 Right Now! There is a large group of AM stations on 7160 right now. The calls I have heard thus far from my Jackson, Mississippi qth are: K0EOO, WA3HUZ, WF2U, K4DEE, and WA3VJB. There are at least 2 other stations that I can't hear. It's almost like listening on 10 meters, as there is no SSB qrm at the moment, just some static. Mike Duke, K5XU American Council of Blind Radio Amateurs __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Getting started
Man... Beautiful "shack"... I love this website! -73- John WB5CW -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Nick England Sent: Monday, February 23, 2009 4:55 PM To: amradio@mailman.qth.net Subject: Re: [AMRadio] Getting started How about a National NC-300 or 303? - great vintage looks, excellent tuning feel, very good performance on AM, CW, and SSB. Or a Hallicrafters SX-101? also very handsome and a good performer Or if you want something that isn't 19" wide and 75 lbs, but is about the same width as the Ranger, a Drake 2B. OK, that didn't make your choices easier, did it? But I think these three are much better rcvrs than your list below. I like the HQ-170 for SSB but never enjoyed it for AM. I couldn't make up my mind either - here's what I ended up with for my main vintage operating position - http://www.virhistory.com/ham/photos/shack3.jpg cheers, Nick K4NYW - Original Message - From: To: "Discussion of AM Radio in the Amateur Service" Sent: Monday, February 23, 2009 6:01 PM Subject: Re: [AMRadio] Getting started > > Okay maybe I should have been a little more specific up to 300/350 > dollars for a receiver that would be my range I guess. I have looked at a > few Hammurlunds and Hallicrafters that look interesting like the HQ > 110,150,170 and I bought a SX-99 real cheap from a local Ham I hope to > check it out soon. > > 73,Bob __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] 75A2
Excellent, Jim... Thanks so much! John WB5CW -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Jim Wilhite Sent: Friday, February 20, 2009 9:28 AM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] 75A2 In experience I have had with tubes checking good but not working in a radio had a lot to do with the design of the circuit they are in. If the circuit doesn't take into account things like plate to grid capacitance and such properly, they can be a problem for high gain tubes. There is a lot of discussion about this if you want to read it. I had an FM tuner that used a 6BE6 mixer that would not work with tubes that were in the normal range on my tester. If I put one with low transconductance in the circuit, it worked fine. Some tubes would even cause an oscillation if they had high enough gain. I did a little circuit redesign and solved the problem of high gain tubes. I don't think you will experience anything like that with a 75A2 so if you find a bad tube with a tester, chances are it will be bad in the radio. One of the things about using a tube tester is you can find shorted tubes before you put them in your radio. If they are shorted screen to G1 you can cause damage to some radios. A tester will find this type of problem before you put the tube in the socket. I use a Western Electric KS-15650 L2 tester. It is a Hickok and is a transconductance tester. Don't get one that measures emission, look for one that tests transconductance. There are several that will, made by Hickok, B&K and the venerable I-177 made for the military by Hickok and others. One of the things about tube testers is if you get a late model it may not have the test setting for the old tubes. If you get an early model it may not have the sockets and test setting for some of the newer tubes. So I suggest you find an emission tester of later manufacture that has the obsolete tube data available. Are tube testers the end all of repairs? No but used correctly and knowing their limitations, they are a useful tool. Jim/W5JO - Original Message - >I can see a tube tester in my future... Any recommendations? > Thanks Bob, John WB5CW > > -Original Message- > > > > John, Todd is quite right. The only thing for sure with a new tube is > that it is new. I've had several radios that worked quite well with > tubes that tested poor to bad. Some receivers will perform well with a > fair tube and others won't with the same tube, If it works, leave it > alone. > Good luck, __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] 75A2
I remember as a child how happy I was when the tv repairman fixed our tv. I have an old Westinghouse tv from the 40's that was given to me... People tell me that it probably just needs a couple of tubes replaced... But I don't think I can call a repairman like the old days...hihi -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of RICHARD GEORGE Sent: Friday, February 20, 2009 8:17 AM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] 75A2 I can remember in my days as a black and white TV repairman, going on a service call and having to replace a tube or 2. The customer would scream that he had just tested all the tubes at the Thrifty Drug store and they were all good! - Original Message - From: "bob mccully" To: "Discussion of AM Radio in the Amateur Service" Sent: Friday, February 20, 2009 7:56 AM Subject: Re: [AMRadio] 75A2 > > > > John, Todd is quite right. The only thing for sure with a new tube is > that it is new. I've had several radios that worked quite well with tubes > that tested poor to bad. Some receivers will perform well with a fair tube > and others won't with the same tube, If it works, leave it alone. Good > luck, Bob AB8OP > > > > __ > Our Main Website: http://www.amfone.net > AMRadio mailing list > Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Post: AMRadio@mailman.qth.net > To unsubscribe, send an email to amradio-requ...@mailman.qth.net with > the word unsubscribe in the message body. > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] 75A2
I can see a tube tester in my future... Any recommendations? Thanks Bob, John WB5CW -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of bob mccully Sent: Friday, February 20, 2009 7:56 AM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] 75A2 John, Todd is quite right. The only thing for sure with a new tube is that it is new. I've had several radios that worked quite well with tubes that tested poor to bad. Some receivers will perform well with a fair tube and others won't with the same tube, If it works, leave it alone. Good luck, Bob AB8OP __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] 75A2
Good point... Man, I surely appreciate all the help on this site... You guys are great! I'm just a beginner with the older stuff and have always been so envious of my older brother, WA5ZTE and my Dad W5SNY (silent)... They started in the old days and built and repaired their radios... I wasn't a ham until the 90's... And so I'm wanting to go back and learn from the good stuff... John WB5CW -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Todd, KA1KAQ Sent: Friday, February 20, 2009 6:18 AM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] 75A2 It's certainly not a bad idea to have replacements if you do end up needing them (you will, someday), just not advisable to swap them wholesale as others have said. The radio itself is still the best tube tester IMO, once you get it running it's easier to compare results through performance. Tube testers are fine for a quick look and for showing some obvious faults, but I've had two instances in the last 2 years where tubes tested great and showed no problems, but didn't work properly in the set. I've also had receivers that worked great despite having some tubes that tested low on the scale. ~ Todd, KA1KAQ/4 On Thu, Feb 19, 2009 at 11:24 PM, John Carrington, M.D. wrote: > I don't, Bob, but I'm not going to rush into buying the replacements > until I can get them tested.. > Good advice and thanks! __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] 75A2
I don't, Bob, but I'm not going to rush into buying the replacements until I can get them tested.. Good advice and thanks! -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of bob mccully Sent: Thursday, February 19, 2009 6:23 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] 75A2 John, Do you have a tube tester? I'd try testing them before replacing them all.Bob AB8OP __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] 75A2
Thanks for that, John... I'll quench the impulsive urges and think about it awhile...hihi John WB5CW -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of John Sent: Thursday, February 19, 2009 5:32 PM To: AMRadio@mailman.qth.net Subject: Re: [AMRadio] 75A2 "I'm going to be tempted to bite on the Ebay ads that just replace all tubes" Kind of overkill before any additional problem solving is done. Might be interesting to at least see if there's AC on the secondary of the power tranny. Then skip to see if there's DC on the output of the filter caps. 10min with a VOM will give you a lot of data. John K5MO __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] 75A-2 power consumption
Great info Jim... thanks so much. I'll give it a try. John WB5CW _ From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Jim Wilhite Sent: Thursday, February 19, 2009 3:25 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] 75A-2 power consumption It takes right at 90 volts for that rectifier to conduct. When it starts conducting the caps will start forming. If you are going to form the caps in this fashion, I would pull all other tubes and put the variac at 90 volts. wait about 5 mins and raise it to 100 volts. Put your finger on the cap to see if it is heating. If so, back it down about 5 volts and wait for the cap to cool. When it cools then start up with voltage again monitoring the temp of the cap. If it gets hot, wait for it to cool. That cap should, if it is good, form in about 20 minutes like this. If it doesn't, get a new one. If it does, check it in about a year because it probably will go bad by then. I wouldn't replace the tubes wholesale, you probably will throw away some of good tubes. If you have a signal generator you can tell pretty well how good they are by the sensitivity of the radio. If I remember right the fuse in that thing is 2 amp. With the volume turned up loud it probably will pull near 1.5 amps through the fuse, so you variac meter should show about that amount. Jim/W5JO - Original Message - On Thu, Feb 19, 2009 at 3:11 PM, John Carrington, M.D. wrote: I'm wondering if I don't see any filament glow with that tube... I'm going to be tempted to bite on the Ebay ads that just replace all tubes... the set for this receiver is 69 bucks. It's real hard to see the filaments in that tube John. Wait until the room is dark and take a look... they are pretty faint. __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] 75A-2 power consumption
I've got it on again... at about 75v... How long would you leave it before you romp it up to 90-95? J _ From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of WA5AM Sent: Thursday, February 19, 2009 1:18 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] 75A-2 power consumption On Thu, Feb 19, 2009 at 3:11 PM, John Carrington, M.D. wrote: I'm wondering if I don't see any filament glow with that tube... I'm going to be tempted to bite on the Ebay ads that just replace all tubes... the set for this receiver is 69 bucks. It's real hard to see the filaments in that tube John. Wait until the room is dark and take a look... they are pretty faint. 73 Brian __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] 75A-2 power consumption
I'm wondering if I don't see any filament glow with that tube... I'm going to be tempted to bite on the Ebay ads that just replace all tubes... the set for this receiver is 69 bucks. _ From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of WA5AM Sent: Thursday, February 19, 2009 1:02 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] 75A-2 power consumption On Thu, Feb 19, 2009 at 2:51 PM, Todd, KA1KAQ wrote: I thought it was closer to 90v to fire that tube, Brian - maybe I'm mistaken. I'd run it up at least to there, if the tube is dead, it won't conduct so it matter. ~ Todd, KA1KAQ/4 Could be Todd. The one graph I found appeared to show it conducting at about 62 volts, but I may have misinterpreted it. Thanks man! Brian __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] 75A-2 power consumption
Yep... that tube socket says 5y3gt... I plugged in a small variac, 7.5amp... and the ammeter just barely budged on the 2amp scale maybe it's not working... _ From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of WA5AM Sent: Thursday, February 19, 2009 12:08 PM To: Discussion of AM Radio in the Amateur Service Subject: [AMRadio] 75A-2 power consumption Hi All, I have a friend in Oregon that I'm trying to help via email, who is bringing his A2 up slowly with a variac, after being stored for about 12+ years. Anyone know what he should expect to see in regard to current draw on the AC ammeter built on the Variac? He is at 75 volts now with very little draw, filaments on, and dial lights glowing. I suspect the B+ rectifier (5Y3, I think) should be conducting at this point too. When he gets to a full 115 volts, what should he expect to see on the ammeter if all is well. 73 Brian / wa5am __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] 75A-2 power consumption
Thanks, Brian... _ From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of WA5AM Sent: Thursday, February 19, 2009 12:08 PM To: Discussion of AM Radio in the Amateur Service Subject: [AMRadio] 75A-2 power consumption Hi All, I have a friend in Oregon that I'm trying to help via email, who is bringing his A2 up slowly with a variac, after being stored for about 12+ years. Anyone know what he should expect to see in regard to current draw on the AC ammeter built on the Variac? He is at 75 volts now with very little draw, filaments on, and dial lights glowing. I suspect the B+ rectifier (5Y3, I think) should be conducting at this point too. When he gets to a full 115 volts, what should he expect to see on the ammeter if all is well. 73 Brian / wa5am __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
