[AMRadio] Manual
Would anyone on the list happen to have a manual for the HP-410B voltmeter? Mine went south on me recently and I'd like to get it up and running. Thanks, Rick/K5IAR __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Manual
Thanks Todd, I'll check again. I likely over looked it. rick Rick I think there are copies available online for download, Rick. If you don't locate one, let me know and I'll check with Mike W1RC to see if he has any copies left. ~ Todd, KA1KAQ __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Manual
Thanks for all the replies. I got the manual from both BAMA and the "manoman" site. I must admit, the second site has a beautiful copy with all illustrations perfectly viewable as well as all pages neat and straight. Thanks again, guys.. Rick/K5IAR I try to avoid BAMA if possible. Try this. http://manoman.sqhill.com/hp/index.htm 410B is 30.8 meg and I haven't downloaded it to know the quality. K7DFW __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Hamfest creeps
Don't worry, Brett, keep working on it and you'll catch up. ;>) I have the small house, old truck and I'm fatter than a brown tick on a big dog. The only thing I'm lacking is that doggone $20,000 tower/antenna setup. Rick/K5IAR My idea of the average 'ham' is an overweight old guy, who lives in a house that looks abandoned, with a $20,000 tower/antenna setup, he drives a 15 year old car, dirty inside and out, that has many strange looking antenna's on it. The trunk is FILLED with the strangest assortment of things! His garage is filled with WW2 or older totaly rusted out radio gems, as is the basement. I dont fit the description at all, at least, not yet Brett N2DTS __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Hamfest creeps
That's sad. Are these guys really hams or want to be hams and CBers? I can remember not so long ago when a ham radio operator was a very well respected member of society who had the ability to perform magic with radios and considered to be very bright. Do you suppose the CB revolution and all of the riff-raff (not to say there weren't and are a lot of good CB operators) it exposed society to has forever tainted the image of a good, CLEAN and HONEST ham radio operator? What a shame if it has. Rick/K5IAR For several years I carried a VHS camera to Dayton and other hamfests and made it a point to tape those types of losers. Then replayed at various club meetings, etc. A friend once stated that if a bomb landed on the Dayton Convention Center the nations gene pool would be dramatically improved! One time at Dayton I had several tables set up and another ham helping. One fat creep came by in a motorized wheel chair and he was noticed helping himself to my items. We both went and confronted him and he started making a scene. It ended when we flipped him out of his chair and all sorts of goodies rolled out. Security called a cop over and they hauled him off. Carl KM1H __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] KN5 callsigns
I had KN5IAR in 1962 if that helps. Rick/K5IAR Those prefixes were all around in 1956-1957 when I was a KN2. The only mainland non KN was WN7 if I remember correctly. Carl KM1H __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Testing
Hehehehe.. now that was funny, Mikey! Rick/K5IAR Maybe its because you chase DX and contest ;>) Mod-U-Lator, Mike(y) W3SLK - Original Message - From: <[EMAIL PROTECTED]> To: Sent: Wednesday, January 30, 2008 10:07 PM Subject: [AMRadio] Testing Hello, My replys to the list are getting rejected as SPAM. Any idea? Anyone else having a problem with aol mail delivery to the list? Bill, KB3DKS __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] KN5 callsigns
Joe.. if you would, look at 1962 or there about for my Novice call, KN5IAR. I could be a year off either way. I'd like to verify the year. Thanks, Rick/K5IAR BTW, I have several older Callbooks that I bought to do a local ham history study on, and can look up those calls.It was amazing how few hams were in the 4 call area until the 1960's.I think my oldest Callbook is 1930. Joe W4AAB __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] My latest toy has arrived, an ART-13A
What's the nomenclature on the ART-13 dynamotor? I have a monster in my shed, but can't remember the details. Rick/K5IAR Id like to find a dynamotor Todd, Ive a big 28VDC supply and it will be a lot faster to get it up and running. It has the 5 position LF switch. Carl KM1H __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] My latest toy has arrived, an ART-13A
That sounds very similar to the one in my shed. I'll get out there today and see if it matches. Rick/K5IAR Rick, The Dynos are DY-11, DY-12 and DY-17 all /ART-13. The base is about 1ft x 8" x 3" with the dyno 7" dia. on top, the fronts seem to vary by manufacture but typically there are two plugs on the front one large, one small 3 pin and a fuse holder, there is a reset button each side of the dyno on the front. 28v in and 28v, 400v and 750v out. Similar to the ATD but the dynomonster is smaller. 73 Max M0GHQ __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Re: Amateur Radio Exam Question
Hi Bob, Ham radio has changed considerably since I was first licensed in 1961, but it is still exciting to me. I have found to be among the AM community is like the "good old days" when we built our own equipment or converted military surplus for ham use. Granted, there is a lot of digital stuff going on and many, if not most, of the newer hams prefer SSB and/or digital modes, which is great. I don't do a lot of talking on the radio, but I do a lot of listening and the AM groups are pretty much into the same topics now as they were back when... You certainly don't need to upgrade from General Class to have a blast on ham radio, especially AM. With the new frequency allocation it is nice to be able to slide down the band where it's nice and quiet when 75 meters is hopping, but, that's just a matter of choice. I say, enjoy that General ticket, it's just as valid and carries just as much fun as does the Extra. 73, Rick/K5IAR But we sure don't need an Extra ticket to operate a 2M or 70cm HT thought a repeater. I just don't have much interest in trying to memorize questions about MOON BOUNCE or METOR SCATTER to pass the Extra exam. It's not that important to me. The PNW AM group only operates on 3870. My General ticket is good enough for that. I would like to see some 40M or 20M AM activity. I don't understand why people don't use 10M AM for local operation during this period of the solar cycle. I guess no one is interested in local activity other than that done on the 2M repeaters. I guess the nature of ham radio has just changed too much from what I remember from the 50's and 60's. It's not as interesting as it was back then. Bob Macklin K5MYJ Seattle, Wa, "Real Radios Glow in the Dark" __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Ant system
Beautiful! Rick/K5IAR While not strictly an AM only topic, a friend sent me this link about the largest SteppIr antenna system to date. It is a compilation of 57 pictures, this fellow has a lot of money tied up in his antenna, too bad he doesn't have a good ol' tube AM rig exciting it. Charlie in NC http://www.kkn.net/dayton2006/K9LTN.pdf __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Elmac AF-68 - Wednesdays Toy
Sweet! She looks good. Rick/K5IAR USPS just delivered me another toy, a Multi-Elmac AF-68 - JT Croteau, N1ESE - Manchester, NH (FN42gx) Contest Manager, TARA Skirmish __ __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Trico colortop fuses.
Hi Max, If you're referring to the glass screw in fuses on the front of the 610E I get mine at Home Depot or Lowes. They usually have a generous supply of all the needed ratings. Rick/K5IAR Does anyone have a supplier of Trico colortop fuses, need a set for my BC-610-E, 2x 25amp and 1x 20 amp. or any fuses they could sell me. I am also looking for someone who can do silkscreening, the lettering is bad and could do with re doing, it is a BC-610-E if anyone has done this or knows of someone who has the ability. please contact me off list. 73 Max M0GHQ __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Trico colortop fuses.
Oops! I didn't notice the call. Sorry, Max. Thanks Todd for the reminder. I wonder if mine are rated 220 vac? If so, and they will work I will gladly send you your needs, Max. Rick/K5IAR Guys, I'm not sure if they have Home Depot or Lowes in the UK. Then there's that whole 115/230V/weird plugs thing. (o: Max, I got a bunch of these off ebay a couple years back (100 or so, 15A) since several old transmitters in the radio room use them. I'd suggest watching there, as buying them through an online business could end up costing a lot if you don't buy a large quantity. Then there's the shipping. Some of the wholesale folks on ebay are only too happy to sell you as many as they can 'cheap', to get rid of them. 73, Todd KA1KAQ __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] 40M AM?
Those who memorize the answers to get a higher level ticket are only cheating themselves. One of the most outstanding qualities old time operators have/had is their knowledge of radio. Today it is easier to get an Extra ticket to allow you to have full access to all frequencies available to Amateur Operators, but if you take the time and expend the effort to learn the theory you will have a much richer experience and enjoy the fruit of your efforts even more. Just my nickel's worth.. Rick/K5IAR I did but there are other people that can't memorize 700 questions! Bob Macklin K5MYJ Seattle, Wa, "Real Radios Glow in the Dark" __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] 40M AM?
That's mighty good advice, Jim. Your reasoning on the content of the present exam is also right on, as usual. I have a friend who is a member of the question pool team and he says since the rigs and modes change so quickly in today's digital world it is very difficult to compose a pool of questions to cover present technology and yet extend the pool into the next few years. It's not task I would want. Rick/K5IAR > Just moaning! Moaning is ok, but lets be respectful to all those who are licensed no matter when they took the tests. While I agree there is a difference in the way current tests are adminstrated, there really isn't much difference in the subject matter. Since we are authorized to use satellite and Spread Spectrum modes, or for that matter any mode, we should have at least a basic knowledge. The same is true of the questions about VE and VECs. As an Extra you are qualified to administer all tests for amateur licenses. That is why the questions are there. However, we want to mentor all newcomers and make them feel welcome. If they operate improperly others may not talk to them which, hopefully, will lead to correcting any improper operation. If we make them feel bad now, when they change they won't talk to us or join our group here. Jim/W5JO Moderator __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
[AMRadio] AMfone
Is it just my connection or is Amfone running very slow to others tonight? Rick/K5IAR __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] AMfone
Thanks Gary. Sorry you're having all the problems. Rick Site is down Rick . I ahve been trying to connect to the provider. Update to follow __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Testing a modulator
If you can come close with an audio output transformer just put that and a speaker on it. You'll be able to hear your audio and see it on the scope as well. Rick/K5IAR How does one test a modulator. I will soon have a modulator capable of around 100 watts of audio K6KWQ Dick Amps by "MORE POWER" __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] {ADMIN NOTICE TO SELLERS AND BUYERS ON THIS LIST}
Brian, Personally, I think you're doing a hell of a good job. To have organization and any degree of sanity you must have rules and they must be followed. You can't please everyone and I think you have found a happy median that is not too difficult to follow. Of course, there will always be the occasional slip, I've sure made my share. I say, keep up the good work and we should all try a little harder to accommodate the rules of the reflector. Rick/K5IAR __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Expansion Possibilities
Actually, Amfone is the sister web site of this list and it has all the sections you guys mentioned and much more. If you haven't been there take a look, it's fantastic! http://amfone.net/Amforum/index.php Rick/K5IAR Speaking from web-development experience, building a website with some disk space for the things Bruce suggested... __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] New AM Swap list
Cool! Thanks, Brian. I also appreciate the fact that I am automatically signed up and don't have to go through that process. Great idea! Rick/K5IAR In an attempt to solve some problems with the For Sale and Trading on the main AM Discussion list, we now have a new "sister" list called AMSwap. It is set up where if you press the reply button, it will reply ONLY to the sender of the posting, not back to the list. The members of the current AMRadio list will not have to do anything to join, as I will automatically apply your membership to this new list... 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
[AMRadio] (no subject)
Where would I go to find a 100K to 500K megohm resistor that didn't cost a king's ransom? Thanks, Rick __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] (no subject)
1/2 watt would be fine or even smaller I would imagine. I don't see any load on it. Rick What size? joe __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] (no subject)
I think you're right, Gary. Rick 500 thousand megs? Dont think they make such an animal. Regards, Gary __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Resistors
Nope. I meant 100K to 500K megohm resistor. I know it sounds crazy to me too, but that what it calls for. Some HV probes use resistors in that neck of the woods. I think I have located what I need. Thanks to all for the assistance. Rick/K5IAR I bet he meant 500k or in other words a 1/2 meg resistor. Lee,w0vt __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Resistors
It is no doubt a high dollar item. It is used to calibrate a meter, but it is on the high end (needless to say!) of the scale. I can use one that is considerably lower in resistance, but it would have been great to have one at the high end for checking the calibration. If I can locate a 500 meg or better I can likely get in the ball park. I sure appreciate all the input from everyone. 73, Rick/K5IAR So curiosity has me. Maybe I missed it, but what is its intended use. If for a high voltage meter for measuring static charge, I bet a 0-1 micro amp movement will cost more than your gasoline bill. John, WA5BXO __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
[AMRadio] Bondo
I haven't used auto Bondo in many years, so maybe someone on here can assist me. I have a few small holes where non standard controls have been added to a cabinet and would like to fill and finish them. They are no more than 3/8" in diameter. Can I just fill them with Bondo or do I need to place some kind of backing inside the cabinet first? Is Bondo the best material to use? I'll be painting it later. Thanks for any and all assistance. Rick/K5IAR __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Bondo
Thanks Mike, but that's way more work than I want to do. I haven't done any welding or brazing in a long time. I'm sure that would look great, but too much for an old coot like me. HI 73, Rick/K5IAR What material is the panel made of? If steel, I would braze up the holes and grind them smooth and use a tiny skin layer of the body filler to make them glass smooth for finishing. You could solder them up also. If aluminum, I would use those low temp aluminum brazing rods and braze the holes shut. You could also use the higher temp aluminum brazing rods with brazing flux or gas weld them with aluminum rods/flux. Finish with your favorite body filler. Duraglass is a polyester based filler that does NOT absorb moisture. That's an option too. Have fun, Mike WE0H __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Bondo
That's just about right, Mike! I was born in '45. Rick Although QRZ.com says you were born in which would make you one hell of an old fart by now...hi hi... Mike __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Bondo
Hi Todd... I enjoy hearing about people older than me, but there aren't many around! HI The cabinet is that of a Bauer 707, so laying it horizontal is not an option for this old man. :~) I think the tape backing is a great idea. I may have to go in layers to prevent sagging of the material. I honestly don't expect a high gloss finish, but I would like it to not be too noticeable. I'll let ya'll know it works. Thanks to all.. Rick/K5IAR I always enjoying hearing about someone older than me. :D Rick, my memory of bondo and similar fillers is that they shrink up, crack, get brittle, and otherwise fall out of larger areas. Not so much of a problem covering a small area of damage, but filling a hole with nothing to hold it but the thickness of the panel edges around the hole doesn't sound promising... The JB Weld idea is one I've thought of too. There's a Hammarlund SP-100 panel waiting for just such a repair in my 'to do' pile. My thought was to put tape or such across the back... ~ Todd, KA1KAQ __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] 60 Minutes
Isn't this the same guy that was spoken of in QST (I think it was QST) several months back? Great stuff! Rick/K5IAR His call is K3TUP...His name shows up on QRZ and must be him he has had over 5000 QRZ hits probably a popular guy right now LOL Bob W1PE __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Power Resistors
Hi Jim, Have you tried Tanner and/or Altex here in Dallas? I have bought several wirewound at both places, I'm not sure if they'll have what you need. Rick/K5IAR Does anyone know of a supplier who stocks a larger selection of wirewound power resistors? I need eight 50 K 7 or 10 watt versions... 73 Jim/W5JO __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Broadcast transmitter rescue Update
Great pictures! The old gal looks to be in pretty good shape. Congratulations! Rick/K5IAR I left the house at 6AM this morning and drove 200 miles to Winchester, Virginia to retrieve the Collins 20V-2 that was given to me. The station went QRT Monday and yesterday all 4 320' towers were dropped by cutting a guy anchor. I was sad to see the destruction of a 60 year old AM site just so a housing project can be started. The 20V-2 is in fine shape, a few obvious thing need to be addressedand it has 48 years of dirt to be dealt with. Here are some pictures of today's exploits and I will post some more tomorrow after I unload the truck and trailer. . 73, Al K3TKJ __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Collins 20V-2 restoration and conversion
Great pictures, Al. Looks like a fun project! Rick/k5iar More pictures of my project http://www.dxham.com/2008-11-23/ 73, Al K3TKJ __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Meter Nuts for Hallicrafters BC 610 E or "very old"Hallicragters XMTR
Have you tried McMaster Carr? http://www.mcmaster.com/ 73, Rick/k5iar I am still looking for meter terminal nuts for my BC 610E. I have checked with fastener suppliers locally and they don't have them and don't know where I can find them. I believe they are 1/4 X 32. Seems that the best chance of finding these nuts is to find some dead meters for the BC 610E lying around with available nuts for transplant. If you have a quantity of OLD meters, I would appreciate you checking them to see if any have the 1/4 X 32 threads. The best bet is to find old BC 610E meters or old Hallicrafters meters. I need several nuts to attach the wires to the terminals of my BC 610E. Your assistance will be greatly appreciated. I stand ready to purchase the old meters or the nuts from them. Thanks and 73, John, K5PGW __ __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] BTW, some of the biggest LIDS are Extras
Nope.. it's sure not confined to the Extra Class license holder. When I was a Novice and even a General if my cw wasn't up to par or if my operating practices were not sharp I was called a LID, more than once! It makes us all better operators to be critiqued honestly. Back in those days you heard mostly hand keys and bugs, very few keyers or keyboards and it was a real challenge to get it right. I appreciate the chastising I received, it made me a much better operator, both cw and fone. Rick/k5iar I'm not sure that being a LID is confined to any one license class. However, there is a tendency for a person to think that when he has been doing the same thing the same way for a long time, he must be "in the right", and others not so much. BTW, "Loud Ignorant Dummy" (LID) works for me 73 de John, K5SEE __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] 1939 Radio Shack Catalog
Thanks Brian! What a fantastic trip down memory lane! Rick/k5iar This is pretty neat! Actual scans and pages turn just like the real thing... http://www.radioshackcatalogs.com/catalogs/1939/ Brian/wa5am [EMAIL PROTECTED] __ 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 Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] Question about Seller of Viking II's on the Auction site
Bob.. you'll hear many horror stories about Martyn, but personallly, I have bought several items from him through the years and have no complaints at all. I always got exactly what he described. I am likely in the minority, but that's my experience. Rick/K5IAR Hi all, First off, If this should be posted on AMSWAP, My apologies. I was unsure. Ok... I see two Viking II's for sale on that famous auction site. The seller is Radio-Mart. Am I remembering correctly that there have been problems with him? I really would love to have Viking II. It was my first radio when I got licensed. Besides, it would be nice to put on AM. But... I don't want to shell out all my disability money on a pig in a poke either... The auctions end in just over 5 hours... What say you all? Should I go for it? Again, if this is not being posted to the proper place, I offer my deepest apologies. 73, cul... Bob de k2ki __ 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] Ed Grothus and The Black Hole
I talked to Ed several times over the years looking for rare and weird parts. Some he had, some he didn't, but he was always Ed. I will miss him. Rick/K5IAR John, K5PRO, thanks for passing word that Ed Grothus has passed away. One of the best vignettes is this YouTube video. http://www.youtube.com/watch?v=rPYqyRsheCg __ 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] Viking Ranger issues
I have experienced problems with the that switch many times, I would look it over closely. Rick/K5IAR Robert Perdue wrote: > I purchased a second ranger and have started to go thru it and am trying to figure out when the meter selection switch is turned to Osc buffer or mod posistion the meter pegs. Any suggestions appreciated. > > 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
Re: [AMRadio] SX-28A restoration project
Beautiful, Brian! http://w5ami.net/cpg1419/thumbnails.php?album=16 (Put the http thing in front) __ 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
[AMRadio] Manual Wanted...
Hi, I am new to this list, so hello to all. I am looking for an operator and/or service manual for a GenRad 2512-A Spectrum Analyzer. Any and all help locating one will be greatly appreciated. I have checked most of the normal online places, but no luck. I'm hoping someone knows of an obscure location they can tell me about. Thanks and 73, Rick K5IZ
Re: [AMRadio] Why I have not been on the radio the last few days
I'm sorry to hear about that Don. How is she doing today? Rick K5IZ Donald Chester wrote: http://www.theleafchronicle.com/apps/pbcs.dll/article?AID=/20060119/NEWS01/601190314/1002/NEWS17 http://www.dnj.com/apps/pbcs.dll/article?AID=/20060118/NEWS01/601180335/1002 __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] (no subject)
You're a lucky man, Larry. I wish I could get WABC 770 Kc here in Dallas. Enjoy! Rick K5IZ ne1s wrote: Last Saturday nite I was down in the cellar shack, working on building a PP 805 modulator deck for a 1930s open relay-rack transmitter I'm restoring that, to the best of my knowledge, never had a modulator. I tuned around 75M and 160M looking for some AM QSOs to monitor, but I couldn't find any with signals good enough for comfortable listening (which is a rare occurrence up here in the Northeast). So I switched the old Meissner RCVR to the AM broadcast band, and tuned across 770 Kc/s WABC - a talk radio station for the past 24 years, but before that the quintessential AM "contemporary" music station. And what I heard was not talk radio, but a live show with a real DJ/commentator spinning the old tunes! From what I gathered this is a new show, and there were all kinds of folks calling in giving their praise. And in one segment was a live Neil Sedaka (sp?) interview! It was like being caught in a time warp. Some of my fondest childhood memories are of hanging out in my grandfather's cellar in Chatham, NJ building, fixing or otherwise diddling with some radio with WABC cranking the tunes. I now know how I'll be spending my Saturday nites for the foreseeable future. 73, -Larry/NE1S __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
[AMRadio] JB-70-A
Hi all I'm getting old, so forgive me if I have recently posted this request. I am searching for a JB-70-A Junction Box for the BC-610. If anyone has one they'd be willing to part with or if you happen to know of someone who might have one, please, let me know. Thanks and 73 to all... Rick/K5IZ
Re: [AMRadio] JB-70-A
Hi Todd... Thanks again and again I'll be glad to at least pay shipping. My address is: Rick Brashear 1227 Flanders St. Dallas, TX 75208 tnx es 73... Rick/K5IZ Todd, KA1KAQ wrote: Hey Rick - Shoot me your address when you get a minute, I want to get that coil out to you later this week. ~ Todd __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] Great resource for anal homebrewers!
Cool page... THANKS! Rick/K5IZ Craig Roberts wrote: I like my homebrew projects to look as professional as possible. One difficulty in achieving the "commercial" look has been fabricating the front panel. An electric drill, a can of spray paint and a Dymo label maker just doesn't do it when you're as, umm, "particular" as I am. Well, I've found a terrific resource for folks like me. It's a company that offers front panel machining and finishing services plus free CAD software to design your own. They may also be useful for restorers who wish to replicate a front panel from the days of yore. The U.S. website is at: http://www.frontpanelexpress.com/ This outfit, based in Seattle, is a subsidiary of a German company. Their website is more amply illustrated than the U.S. counterpart and is worth visiting: http://www.schaeffer-apparatebau.de/index.php?&option=com_frontpage&Itemid=205&lang=en Have fun. Now you can stop borrowing your buddy's expensive Greenlee punches. 73, Craig W3CRR __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] watt meter
Try W7RF, Radiodan, at the link below. I personally like Bird meters and he has a good assortment of new and used meters. Some are PEP ready or you can buy a kit (either original Bird or a knockoff) to convert a regular Model 43 to PEP. They are designed for continuous duty and you can get any wattage slug you want from 5 watts up WAY UP! http://www.radiodan.com/bird/index.htm Hope this helps. Rick/K5IZ Brett gazdzinski wrote: What is everyone doing for a watt meter? My swan wm-3000 blew up last weekend, it reads no pep and about 1/4 of the correct average power. I could fix it if I could find out what diodes they used (3 gone), and one of the little inducters broke, but it would not be calibrated. It was a good meter, 4 scales going up to 2kw, real pep reading, large meter, but its toast. Looking around, not much out there that does high continuous power, real pep readings, looks good, etc. I went to ham radio outlet in Delaware today (working close by) and despite waiting for almost an hour, could not get much help. They would not let me open a box of a daiwa meter, and I hate the cross needle meters anyway, they had a diamond, not true pep, but I could not look at that, they wont unseal a box unless you buy it. That and the poor service had me walk out of the store vowing never to buy anything from them, ever. Some web searching turns up CB type meters, not good at lower frequencies, or discontinued units. Nye viking used to make a good one, but not anymore. The 813 rig can do well over the 1500 watt pep level, well over 2000 watts pep with the neg cycle loading deck hooked up, so I need something good for the power. MFJ makes one, but the manual shows its only good for 500 watts 100% duty cycle, 600 or 700 watts of carrier means 90 second transmissions (how cheap that mfj stuff is). Not much on ebay but old heathket meters... Brett N2DTS __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] watt meter
This is just a guess, but a lot of older watt meters used 1N60 diodes. The inductor is most likely in the 250 - 275 uh range. 73, Rick/K5IZ What is everyone doing for a watt meter? My swan wm-3000 blew up last weekend, it reads no pep and about 1/4 of the correct average power. I could fix it if I could find out what diodes they used (3 gone), and one of the little inducters broke, but it would not be calibrated. It was a good meter, 4 scales going up to 2kw, real pep reading, large meter, but its toast. Looking around, not much out there that does high continuous power, real pep readings, looks good, etc. I went to ham radio outlet in Delaware today (working close by) and despite waiting for almost an hour, could not get much help. They would not let me open a box of a daiwa meter, and I hate the cross needle meters anyway, they had a diamond, not true pep, but I could not look at that, they wont unseal a box unless you buy it. That and the poor service had me walk out of the store vowing never to buy anything from them, ever. Some web searching turns up CB type meters, not good at lower frequencies, or discontinued units. Nye viking used to make a good one, but not anymore. The 813 rig can do well over the 1500 watt pep level, well over 2000 watts pep with the neg cycle loading deck hooked up, so I need something good for the power. MFJ makes one, but the manual shows its only good for 500 watts 100% duty cycle, 600 or 700 watts of carrier means 90 second transmissions (how cheap that mfj stuff is). Not much on ebay but old heathket meters... Brett N2DTS __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] watt meter
There may be a manual on BAMA. If not, quite likely you can locate a schematic indicating the part numbers you need. I feel sure you'd be safe with just about any diode in the 1N60/1N34 category. 73, Rick/K5IZ Brett gazdzinski wrote: The diodes looked like 1n34a's, but who knows. I think I replaced them before, but now the little inductor is broke. Its likely been off for a while, reading high, that or I build REAL efficient RF decks! I should order a manual so I can fix it. Brett
Re: [AMRadio] Wicox 96D TX
John, If it were me, I'd put that old girl back in shape when time allowed. Just to think of those two magnificent 450 TL's glowing in the night is enough to bring a tear to ones eyes. Great find! 73, Rick/K5IZ John Lyles wrote: I picked up this thing yesterday at a SK's wood shed for $50. It had been sitting next to the ugly-painted BC610E, which recently went on EPAY. The Wilcox 96D is < a foot wide, 6 feet tall, 300+ lb box. It "works in a drawer", in that it can be slid out on rails, for inspection inside. It was built in November of 1952. It has an RF exciter, crystal socket inside, and an 807 driving an 813 driving a PAIR of 450TLs. Only the 807 remained in the socket. Plate voltage on the final was 4100 and current was 0.6 - 0.9 Amps. It was a powerful transmitter in its day! The power supply was separate, and it isn't certain it made AM or not. Frequency range is ~ 2 - 12 MHz according to the dials. It has little doors which open to expose the turns counters for tuning, and one opens to get to the fuses and power relays. On top are a pair of balanced output studs. This funky looking transmitter (slim) needs the final plate tuning cap, but has most else. It is loaded with some good parts, including the turns counter dials, two big slip stator caps, a can within a can neaturalizing cap. The PA inductor is tapped at numerous points, an d has a second coil which can be slid into and out of the fixed inductor. Now the dilema. Its certainly a different rig, but it needs to be tubed with pair of paralleled 450TLs and needs the cap along with a few small parts. Should I part it out, for something homebrew, like a balanced antenna Tuner? Or try and restore 'er? I'd be curious about others experience and opinions. BTW, I have three other transmitter projects needing my attention right now. I got the Wilcox out of the truck bed and plopped it out under a roof next to my shed this afternoon. Inside one of the front doors there is a complete parts list and schematic! 73 John K5PRO New Mexico __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
[AMRadio] Modulator feedback
I've posed a couple of questions on some other lists and received some good advice, but I am still in need of more. My BC-610-E has a bad feedback or "talk back" problem. I've placed a capacitor across the overload relay (RY-5) and that did eliminate a little of the talk back. However, with much audio gain at all, not nearly enough to attain 100% modulation, I get feedback. Not just talk back, but feedback. I have to assume it's coming from the modulation transformer. The modulator bias is set for 40 ma as specifications state. The bolts on the modulation transformer are all tight. What am I over looking here? I'm using a BC-614-E speech amplifier with a D-104 non amplified mic. I did a few modifications to the dynamic input circuitry of the BC-614 to better match the D-104, but that is the only modification in either the speech amp or the BC-610-E. Rick/K5IZ
Re: [AMRadio] Modulator feedback
Wow! Not exactly the news I wanted, Mike, but thanks for the honesty. It looks like I may have to move the speech amp and mic considerably further away from the "E" model. I have an "H" and "I" model, but they are still in the refurb process. Potted modulation transformers or any modulation transformer for the 610 series is scarce. I have a UTC that will work, but it's not potted and I have an oil filled military transformer that would work if I had room on the chassis. I wonder what the guys in the SCR-399 did to contend with this issue since they were in such close quarters? Anyway, back to the drawing board and thanks again for the info. 73, Rick/K5IZ Mike Sawyer wrote: Rick, Unfortunately, you are plagued with the same problem dozens of -610 owners have. The only way to resolve it is to get an I or H model modulation transformer. They are potted and hermetically sealed and don't talk back near as much. Other than that you are SOL. Mod-U-Lator, Mike(y) W3SLK - Original Message - From: "Rick Brashear" <[EMAIL PROTECTED]> To: "Discussion of AM Radio" Sent: Thursday, March 16, 2006 10:42 PM Subject: [AMRadio] Modulator feedback I've posed a couple of questions on some other lists and received some good advice, but I am still in need of more. My BC-610-E has a bad feedback or "talk back" problem. I've placed a capacitor across the overload relay (RY-5) and that did eliminate a little of the talk back. However, with much audio gain at all, not nearly enough to attain 100% modulation, I get feedback. Not just talk back, but feedback. I have to assume it's coming from the modulation transformer. The modulator bias is set for 40 ma as specifications state. The bolts on the modulation transformer are all tight. What am I over looking here? I'm using a BC-614-E speech amplifier with a D-104 non amplified mic. I did a few modifications to the dynamic input circuitry of the BC-614 to better match the D-104, but that is the only modification in either the speech amp or the BC-610-E. Rick/K5IZ __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] Valiant modulation eedback
Thanks John. I hadn't thought of isolating the xfmr from the chassis. I do that with near fields in the studio all the time to get a flatter response. You may be on to something big here, thanks! Regards, Rick/K5IZ John Lawson wrote: Re: the discussion of acoustic/mechanical modulator feedback - my Valiant 'talks' - and loudly - when I'm hitting it good. I have a broadcast mike, preamp, EQ and compressor in my audio chain - all fed into the (as yet unmodified) Valiant input. (BTW, my buddy's Johnson 500 'talks' loud enough to heard in the next room - he also has to watch his mike placement.) Of course, when On The Air - the Valiant rings and howls - I have to move the mike, change the locations of various things - and quite likely put the Valiant on an acoustic absorbing pad of some kind. Lead-filled 1/2" neoprene comes to mind - I've used that building theatres and recording studios - it's amazing what it sucks up. Another thought re: 'potted' vs. 'open frame' Mod Iron occurs to me (still with acoustic-designer hat on)... isolating the offending transformer from the chassis might mitigate some of these feedback effects - maybe as easy as removing the mounting bolts and resting the device on hi-temp dense foam or even thick felt padding - something to break the close mechanical coupling between the transformer core and the chassis of tghe rig. Maybe easier than re-doing the modulator, or even exiling tghe poor thing... I've done exactly this with building distro transformers of up to 100KVA - and in fact there are several commercially-available solutions for just this kind of thing... hit the Big Breaker and half that end of the building goes hu... ;} Cheers John KB6SCO __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] Modulator feedback
Thanks John, that's a good idea. Rick John E. Coleman (ARS WA5BXO) wrote: Get a high inductance choke (modulation reactor) to shunt the DC out of the secondary of the modulation XFMR. It will kill about 75 % of the talk back. What's left is all second harmonic talk back and it won't feed back. Did you ever use an old speaker that required DC to get the magnetism (no permanent magnet)? Not much sound comes out until the DC goes in to make the magnetism for the voice coil to work against. John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rick Brashear Sent: Thursday, March 16, 2006 9:43 PM To: Discussion of AM Radio Subject: [AMRadio] Modulator feedback I've posed a couple of questions on some other lists and received some good advice, but I am still in need of more. My BC-610-E has a bad feedback or "talk back" problem. I've placed a capacitor across the overload relay (RY-5) and that did eliminate a little of the talk back. However, with much audio gain at all, not nearly enough to attain 100% modulation, I get feedback. Not just talk back, but feedback. I have to assume it's coming from the modulation transformer. The modulator bias is set for 40 ma as specifications state. The bolts on the modulation transformer are all tight. What am I over looking here? I'm using a BC-614-E speech amplifier with a D-104 non amplified mic. I did a few modifications to the dynamic input circuitry of the BC-614 to better match the D-104, but that is the only modification in either the speech amp or the BC-610-E. Rick/K5IZ __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] Modulator feedback
Thanks Mike. I just made a discovery about the 2A3 A-F drivers. I had a set of matched NOS RCA tubes in there. The feedback seemed to be coming from the area of those tubes more so than anywhere else. So, I exchanged them for another pair I have and it seemed to help quiet the feedback. Obviously, microphonics in the 2A3's is a factor. Next I looked for shields for the tubes, but have none, so I used a "poor man's shield", a couple of pieces of aluminum foil. It helped considerably! As a matter of fact, I could then advance the audio of the speech amp enough to achieve good modulation. So, I am now on a quest to find some way of shielding the 2A3's. I'm afraid my temporary foil shields would cause the tubes to over heat, plus it's not the best way of doing it. Have you had any experience with this? I wonder if the 100th's are also part of the problem. I really think the "talk back" is coming from the modulation transformer, which I can live with. I just have to get the feedback out of it. Thanks for your assistance and advice, Rick/K5IZ Mike Sawyer wrote: Rick, The UTC may work so don't discount it. Those I and H model transformers were only about half the size as the D and E models. I can't think of the company that made them but they were substantially different then the earlier models. As always, your mileage may vary. Mod-U-Lator, Mike(y) W3SLK
Re: [AMRadio] Modulator feedback
Thanks Don. I used a 100 uf capacitor at 160 vdc, so it should be sufficient. I hooked it up exactly as you stated, positive to ground and the negative lead toward the center tap of the HV transformer. I wish I could say it stopped it, but I still have problems. It did stop a lot of the talk back, but the feed back is still there albeit not nearly as prevalent since I switched the 2A3 driver tubes. I made a couple of modifications to the dynamic microphone input to better accommodate the non amplified D-104, but I can't see how that would have anything to do with it. I can move the mic several feet away (it has a long cord - possibly too long) and turn the audio up enough to get 100% modulation on the scope. The 614 has a pretty high output and it takes little to overdrive the modulator. Rick/K5IZ Donald Chester wrote: How much capacitance did you use? It should be at least 20 mfd. A cheap electrolytic should do ok, since there is only a few volts across it. Put it between the midtap of the plate transformer and ground. The positive side should go to ground, and the negative side to the transformer. In all the BC-610E's I have ever seen, that capacitor eliminates 95% of the chatter. Don k4kyv ___ This message was typed using the DVORAK keyboard layout. Try it - you'll like it. http://www.mwbrooks.com/dvorak/ http://gigliwood.com/abcd/ __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] Modulator feedback
Jim, you have a dandy idea there. The plate supply for the drivers is kind of weird. When I was going through the transmitter I replaced most of the components in the modulator section as most were out of tolerance. Maybe I made a mistake, I'll sure check. Thankfully, the modulator deck can be accessed (by standing on your head!) without breaking down the entire transmitter. If that bias is off it could sure cause some strange happenings. Thanks a million, I'll follow your advise. Rick/K5IZ James M. Walker wrote: I'll bet you a nickel the bias supply has a problem, the plate supply for the 2A3s is not normal the plate supply is achieved by putting a negative voltage on the 2A3s cathode to raise hte plate to 360 volts. Sounds like the bias supply voltage is off. Check the manual and then the components that provide voltage to the 2A3s Jim WB2FCN YMMV
Re: [AMRadio] Modulator feedback
I agree, they are very small for a 250 watt transformer. I made a few more adjustments such as line voltage and tightening up the old "E" model tranny. Hopefully, when I get the back on it will be usable now. I sure appreciate all of the suggestions, advice and experience I have received here. Rick/K5IZ Donald Chester wrote: , The UTC may work so don't discount it. Those I and H model transformers were only about half the size as the D and E models. I can't think of the company that made them but they were substantially different then the earlier models. The potted versions are made by Chicago Transformer Co. They are indeed much smaller than the older end-bell model like what is used in the E model. I suppose they work OK, because I have not heard a lot of complaints about blowing them, but I am still amazed at how TINY those things are. Don K4KYV __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] Relay 101 Reed Relays
Mark, I don't know about everyone else, but I truly appreciate the information. I've used reed relays in the past, but certainly didn't and don't know much about them. Your info helped clear up some questions. Thanks, Rick/K5IZ W1EOF wrote: Well like machanical relays it's very much about the contact materials. In the relay business we spend a lot of time working on contact materials, plating, etc. So it's hard to illuminate too much without knowing the particular device in question. What's a reed-relay? A relay made from a reed-switch inside a coil. A reed switch has two ferrous blades which have had a contact material deposited on the ends making up the contact. When the coil is energized the steel blades of the reed switch deflect a very small amount and close the contacts. That's it. A few thoughts: 1. Reed relays tend to be fast. Regular reeds close in less than a millisecond, mercury reeds about 2ms. 2. If you don't know what the coil spec is, hookup the coil across a variable power supply. Adjust the meter upward slowly until the contacts close (determined by a DMM across them). Bring the coil voltage to 0.00 and repeat a few times. This is call the Operate voltage. Normal operate voltage for a reed relay is 50% overdive. So your typical 5.0vdc relay will operate about 3.6 volts or so. Most relays are find at 100% overdrive, it doesn't hurt the relay. 3. Contact life is all about the materials. When designing a generic multi-purpose reed relay they choose a reed switch which can handle moderate voltages and loads. In very broad general terms if you were interested in very very low contact resistance you use a soft contact surface like gold. This is terrible for higher voltages or currents though. For those you want something really hard. 4. If you have a mercury or a mercury-wetted relay make sure it's oriented properly. These relays have a blob (or at least some small balls) of mercury in them. You don't want that mercury floating around and shorting the contacts when the relay is supposed to be off. They will sometimes have an arrow on them but not always. 5. Form-B reed relays rely on a magnet to hold the switch closed. When you apply voltage to the coil the magnetic force overcomes the magnet and opens the switch. 6. Form-C reed relays are made with a form-c switch. The blade is held against the N.C. contact via mechanical force. Applying coil voltage results in magnetic force that moves the blade from the N.C. contact to the N.O. contact. It relys on mechanical force to return the switch to the resting state. 7. Reed relays can have two types of shields in them. One is a magnetic shield on the outside of the coil. This helps prevent interaction when the relays are mounted very close to one another on a PC board. The other is a RF shield inside the bore of the coil. This is to provide a constant impedance to the circuit. This is very, very important to many reed relay customers. For instance automatic test equipment (ATE) manufacturers are big consumers of reed relays. A modern semiconductor tester can use 10,000 relays. They want to test fast device quickly. So they are very very concerned with the RF performance of the device. Many years ago I started working for a reed relay company. I was naive, thinking "How complicated can these things be?' Ha! Now I'm older and wiser and understand that there is a wealth of knowledge and complexity in many things we deam "simple". Reed relays incorporate electronics, physics, magnetics into their design and use. TO design and test them you work with voltages from microvolts to thousands of volts. .001 ohm to 10^12 ohms (million-megohms). I'm still learning today after twenty years. Relay manufacturers are constantly pushing the envelope to make devices which not only perform better but are much smaller and less expensive. I have recently seen reed relays that are approximately the same size as a 1/2W resistor! I don't know what else to say in general about them. I'll be glad to answer any questions on this subject. I hope this gives you some food for thought. 73, Mark W1EOF
[AMRadio] BC-610 meters
If anyone happens to have an abundance of panel meters like those used in the BC-610(*) I am in need of all three for the "I" model or actually any model that has the same meters. I have some in place now, but they are all three different and ugly. I'd like to get three meters that at least look alike if not from the same manufacturer. They are 0-500 ma, 0-10 vac and 0-15 ma meters. If you have one or all and would like to sell them, please, contact me off list. Thanks and 73, Rick/K5IZ
Re: [AMRadio] HB Xmtr, was: Home Brew AM Transmitter Wanted
Larry, Did you mean to type "200" watts of audio? I have a couple of modulation transformers, but I'm not sure of the ratios, I'll look. Both are well capable of 300 watts. Regards, Rick/K5IZ Larry Keith wrote: I have been looking at HB AM Xmtr designs. One of the more interesting ones can be found on the amwindow.org web site. It is a pair of 813's modulated by a pair of 813's. That makes it interesting to me since I already have a stash of 813's! The designs doesn't look too complex. It requires about 5 - 10 watts of RF drive and 20 watts of audio. Those should be easy enough. From looking at the xmtr and power supplies schematics, it appears that the only "scare" parts are the modulation transformer and the Heising choke. Would anyone care to comment of availiability of such items? Specs shown are: Mod Xfmr -- 300 - 500 Watts, 2:1 step down. Heising choke: 50 H @ .5 A 73, Larry KQ4BY Larry Keith 231 Shenandoah Trail Warner Robins, GA 31088-6289 [EMAIL PROTECTED] 478-329-0030 __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] HB Xmtr, was: Home Brew AM Transmitter Wanted
Hi Larry, Sorry, I assumed it used plate modulation, but that's what I get for assuming. I'll check on that transformer when I'm over there tomorrow. Good luck with the transmitter, it sounds like a winner. 73, Rick/K5IZ Larry Keith wrote: Hi Rick, No, I got it right.. The audio (20 watts) is fed to to the screen grid & control grid (tied together)via a transformer (don't know the specs on that guy, yet) with one side of the xfmr going to one tube and the other side to the other tube.. Keep me apprised on that modulation xfmr.. Tnx &73, Larry KQ4BY --- Rick Brashear <[EMAIL PROTECTED]> wrote: Larry, Did you mean to type "200" watts of audio? I have a couple of modulation transformers, but I'm not sure of the ratios, I'll look. Both are well capable of 300 watts. Regards, Rick/K5IZ
Re: [AMRadio] HB Xmtr, was: Home Brew AM Transmitter Wanted
Thanks, John. You're probably right. I most likely didn't read closely enough before I commented. 73, Rick/K5IZ John E. Coleman (ARS WA5BXO) wrote: I think he's talking of the input to the modulator tubes in 20 watts to Class B 813s with control grid and screen grid tied together. But I may have missed something. John, WA5BXO
Re: [AMRadio] k1man fined
I agree, Phil. I don't think the Amateur bands are the place for any type of "broadcasting". Whether the ARRL is for the benefit of the Amateur Radio operator or not it is still a commercial entity. However, where K1MAN crossed WAY over the line in my estimation is when he had a "call in" radio show on 20 and 75 meters then played it back time after time after time! I don't think such a privilege is provided for in any Amateur Radio license. Rick/K5IZ The difference between the W1AW broadcasts and the K1MAN broadcasts is that W1AW does not openly promote any merchandise sold by the League. For that reason, W1AW was not the subject of any FCC enforcement action. W1AW is not doing anything illegal under the current rules. Several years ago, a Petition for Rulemaking was filed with the FCC. This petition would have eliminated ALL broadcasting activity on the congested HF phone bands. The FCC never put it up for public comment. Broadcasting, whether by K1MAN, W1AW, or anyone else, does not belong on the amateur bands. If someone wants to play "broadcaster", let him or her buy time on the numerous commercial shortwave stations that operate in this country. The rates on most of them are quite reasonable and those stations run a minimum of 50 kW transmitter power (not including antenna gain). Phil G. K2PG
Re: [AMRadio] 10 Meter AM Frequencies
Has anyone made this modification to an old Lafayette Comstat 25? I have a couple of those I've been wanting to convert to 10 meters. Rick/K5IZ Peter Markavage wrote: Personally, since the demand for the Courier Royale is high among CB collectors, I would sell that rig, Ebay or whatever. $75 to $150 is not uncommon for that rig. Take the proceeds and buy several cheap CB's that you can diddle with, steal parts, etc. or get a used Uniden HR-2510 or 2600. Pete, wa2cwa
[AMRadio] Cable
Does anyone have a good source for 8 conductor shielded cable as used to connect the BC-614 speech amplifier to the BC-610 transmitter? I'm sure the regular sources will have it, but I am curious if anyone has a more reasonably priced outlet. I am in need of about 20'. Thanks, Rick/K5IZ
Re: [AMRadio] 10 Meter AM Frequencies
Thanks Steve... I'll check out the site you quoted. I'd like to be ready to go when 10 comes around again... unfortunately, I fear I have a long wait. 73, Rick/K5IZ [EMAIL PROTECTED] wrote: I believe the Lafayette Comsat 25 is the same basic rig as my Robyn T-123B
Re: [AMRadio] Beastly 610-E
I know you hate to let go of that beauty, Geoff. I will say this and I mean it sincerely, that is a mighty good bargain for someone. If I had more room and money and time and... I'd snatch it up myself. 73, Rick/K5IZ W5OMR/Geoff wrote: It breaks my heart to have to... but I currently have no choice. I'll have the W5MEU(sk) beastly 610-E at the Belton Hamfest, in Belton, TX (between Austin and Waco, between San Antonio and Dallas, TX) on the 22nd of April, with a spare 250TH, a spare 100TH, a spare plate transformer, another modulation transformer (that needs to be re-wound), the BC-614 speech-amp, a D-104 and the back-panel with working interlocks, 3 tuning units (40, 80, 160) and all the coils First $1,000 takes it all. I don't use it, because I personally prefer my home brew stuff. Contact me off-list.
Re: [AMRadio] : BC 610 needing POWER 220VAC
I may be falling into a joke or something here, but have three BC-610's and I have yet to run any of them on 220 vac. All three are wired for 115 vac as that's what was provided with the generator from which they were originally powered. Both sides of the AC line entering the BC-610's are fused with a 25 amp fuse and I have yet to blow one, even when the overload protection circuit kicked out indicating an excessive current drain. The two I use at this time both have an output in excess of 400 watts on CW and 350 watts on phone, so they are drawing full current from the mains. Granted, it would sure be nice to have a 220 vac primary on the power transformer to provide for a more stable line voltage, but at 115 vac I still only see about a 3 volt drop at full power. It would be nice if the owner of the BC-610 spoken of here would put it on the air or if he prefers, put it on the market so it could be in circulation. They are great old war horses that will be around long after most of us are gone. Rick/K5IZ Jim Miller WB5OXQ wrote: I had an idea that it draws too much current for a common 110 circuit. My centurion amp requires 220vac also. Otherwise it would need 30 amps at 110 and that is too much for most wiring in homes. We never tired to operate that transmitter and I Hi Jim, Most big rigs run from 220VAC if for no other reason, just load balancing. Big rigs will often pull more that 20 amps of AC line current on...
Re: [AMRadio] : BC 610 needing POWER 220VAC
You're sure right about the twist plug, Geoff. I replaced my two prong with a three prong twist and it was a booger bear to find one to fit into the hole. I finally stumbled across one (literally!) over in Ft. Worth at Nortex. Someone mentioned a dedicated AC line and running it through a 25 amp variable transformer for their 610, that's the same set up I use. Has anyone experienced distorted audio when using a BC-614 when "High Voltage Protect" is on? The "E" model doesn't have this problem, but when I tried to check out my BC-614-H on the 610-H I got real distorted audio in low power. All works great in the "Normal" position. Rick W5OMR/Geoff wrote: I think ya'll are all missing the point... the BC-610 has a twist-plug recepticle on the back of it the blades are curved. If one didn't know better, one might think that the BC-610 used a special plug, that connected to 220VAC. It does not. Jim, if your friend has the rig, and has the plug that goes into the back of it (and everything else needed for it) then yeah, you could puot it on 75m AM phone. The single 250TH modulated by a pair of 100TH's was a military wonderment, in it's day. -- 73 = Best Regards, -Geoff/W5OMR __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] : BC 610 needing POWER 220VAC
John, Be careful what you tell your wife, I told mine basically the same thing and she put me out to pasture to find 'em! :-) Rick John Coleman ARS WA5BXO wrote: I really have no idea if it is wired for 110 or 220. I know that the Plate XFMR is 110VAC and if it were me I would wire a separate primary circuit for the plate XFMR. Just for the load balance. If the filaments and low voltage stuff is all run from side A of a 220 circuit and the plate XFMR from side B then it is feasible that the filaments and low voltage supplies would be more stable. And the pilot lamps would not dim as much. That is important when you're trying to write in the log while talking on the air by the light of pilot lamps only, HIHI. I told my wife I was going to get two 20 year olds to replace her and she told me I was not wired for 220. I'm gonna go disinfect some ice cubes. John, WA5BXO __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] : BC 610 needing POWER 220VAC
EXCELLENT! Thanks Jim. I obviously wasn't thinking or I would have realized the voltages throughout would be reduced and it could not operate properly. 73, Rick/K5IZ James M. Walker wrote: The BC-610, does not operate properly, when the front panel switch is in "protect" or "tune" mode, if you are on AM. Bias voltages change all around as the "tune/protect" position switches in a series dropping resistor to the 115 VAC main input. The manual, says tune in CW mode, using the tune position. Dip the plate current, "to get you in the ball park. Then go to operate, and peak the grid drive to the 250TH, and also with no modulation set the modulator current to 40 MA resting. The driver stages 6V6 through to 2X807s can be peaked by turning on the exciter plate power switch. If you are getting distortion in the "protect/tune" position, that is correct as the bias, HV and drive are all off normal. You "CAN'T" reduce power by operating in tune position without getting distortion. The manual says, to run at reduced RF output, decrease the output coupling swinging link position to reduce RF output to the level you want. As always, YMMV Jim WB2FCN
Re: [AMRadio] : BC 610 needing POWER 220VAC
Well, Brian, you are right, the 11 ohm dropping resistor is only in series with the plate transformer. I was incorrect thinking it dropped the voltage across everything. Of course, you're also right as is Jim that this would throw the modulation bias off. Thanks guys, you have enlightened me. I have no need or desire to operate in the HV Protect mode, I was just curious about the difference when I was checking out the 614. As indicated earlier, it's easy enough to operate with lower power by simply adjusting the coupling. I say "easier" sometimes that rascal can be real touchy. Thanks, Rick/K5IZ
Re: [AMRadio] : BC 610 needing POWER 220VAC
Sounds good to me Don, that's the only way I ever run it anyway, wide open. Although I do have a variac in line it is to insure the line voltage doesn't get too high. In my area it sometimes jumps as high as 125 volts and that would do the old power tranny no good at all. So, I have a line voltage monitor and variac to keep the voltage to 115 - 117 volts. Rick Donald Chester wrote: From: Rick Brashear <[EMAIL PROTECTED]> Well, Brian, you are right, the 11 ohm dropping resistor is only in series with the plate transformer... Of course, you're also right as is Jim that this would throw the modulation bias off... As indicated earlier, it's easy enough to operate with lower power by simply adjusting the coupling. I say "easier" sometimes that rascal can be real touchy. It's best to run the BC-610 in the full power mode. HV protect is for tuning up without risking damage to the final tube or other components. Running the rig in HV protect will result in very poor voltage regulation on the final, due to the series dropping resistor in the HV xfmr primary. Running it with reduced loading will throw the load impedance to the modulation transformer way off, with the possibility of blowing the xfmr or arcing something over in the final. The only proper way to reduce power would be to operate the plate transformer from a variac or some other kind of autotransformer, to provide a well-regulated source of reduced a.c. line voltage. Then the modulator bias would have to be reduced, but that would require extensive modifications, due to the combined audio driver plate/modulator bias power supply arrangement. Best to just run the BC-610 according to the stock instructions in the manual, if you are not confident about doing extensive modifications to the rig. Don k4kyv ___ This message was typed using the DVORAK keyboard layout. Try it - you'll like it. http://www.mwbrooks.com/dvorak/ http://gigliwood.com/abcd/ __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
[AMRadio] LV Supply
Hi all... I am looking for suggestions on choke/capacitor combinations for a 13.8 vdc, 10 amp maximum load supply. I'd like to have the benefit of choke input regulation. I thought I had stuff here that would work, but have not found it yet, so I'll buy more and I want to be sure I am calculating things correctly before I let go of the hard earned cash. Thanks for any suggestions and help. Rick/K5IZ
Re: [AMRadio] LV Supply
Oops! I'm either going to have to start proof reading my posts better or stop writing them so late at night. I meant to say "1 amp" maximum load... Sorry for the goof. Rick Rick Brashear wrote: Hi all... I am looking for suggestions on choke/capacitor combinations for a 13.8 vdc, 10 amp maximum load supply. I'd like to have the benefit of choke input regulation. I thought I had stuff here that would work, but have not found it yet, so I'll buy more and I want to be sure I am calculating things correctly before I let go of the hard earned cash. Thanks for any suggestions and help. Rick/K5IZ __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
[AMRadio] RCA BT1/A
Does anyone have complete documentation for an RCA BT1/A transmitter they would be willing to sell, copy... or maybe know where I can purchase it? Thanks, Rick/K5IZ
Re: [AMRadio] RCA BT1/A
Thanks Brad. Rick/K5IZ uvcm inc. wrote: Check with Mike D K06NM Brad KB7FQR
[AMRadio] DX-40
A friend and I are working on his DX-40. It works beautifully with the exception of a hum (sounds more like 60 than 120 cycles to my ear) on the carrier when in phone mode whether the mic is connected or not. We have just begun to look at it, but I thought if someone here has had experience with the same problem it could possibly save a little time. Thanks, Rick/K5IZ
Re: [AMRadio] DX-40
Thanks Ken. The filter caps had recently been replaced, I checked them anyway and they tested fine. Replacing a couple of bypass caps seemed to do the trick. There is a little noise left, but I honestly think it's just incidental noise not an actual hum. My buddy is using a D-104 (non amplified) and it seems to be over modulating no matter chow softly you speak or how far away from the mic. Have you had any experience with that? When I operate my DX-40 I use a Shure 444 and have never had that problem. Thanks for the advice and help. Rick/K5IZ
Re: [AMRadio] DX-40
Ken, Don told me of a modification to help control the over drive caused by the D-104 and I think I'll try it when I have time. The DX-40 should sound real good once the audio is adjusted properly. Hopefully, we can compare notes on the air real soon. 73, Rick/K5IZ Ken Zuercher wrote: Rick, I also have a Shure 444 and it sounds fine. I may start fooling around with a higher fidelity mike and a modulation monitor (from my part time broadcast engineering business) to see how good the audio can be with controlled carrier modulation. Hope to hear you on 40 meter phone. Ken, KC8QO
Re: [AMRadio] DX-40
Thanks Brian. I've noticed that the loading of the DX-40 can be a little cantankerous at times. I'm going to revisit the D-104 dilemma again today if I can . I am obviously doing something wrong since so many people have replied telling me they use a D-104 with great success. 73, Rick/K5IZ Brian Carling wrote: I have heard some DX40s and DX60s that sound really great on AM using a D104 with no modifications. I get good reports on my DX60 with the D104. These rigs are a bit finnicky on adjustment of the drive level, drive tune, loading, grid current etc. If things are not just right, they can act strange and probably won't sound as good.
Re: [AMRadio] DX-40
Larry, Thanks for the tips. I'll check the mic. 73, Rick Larry Taft wrote: You have checked out the D104 also? The elements can go bad. Make sure you aren't using the amplifier in the base which would way overdrive the audio input of the DX-40 73, Larry K2LT.
[AMRadio] Preselector
Has anyone here had experience with an RME-23 preselector? I was storing some things in my shed and ran across one. I can't remember when or where I got it, but after installing a new power cord it seems to be functioning normal, with voltages all within tolerance. I haven't hooked it up to a receiver, but thought I would give it try later. Is it worth the trouble of pulling out a receiver and making the necessary connections? Thanks, Rick/K5IZ
[AMRadio] DX-40
Does someone have a good method of modifying a DX-40 for PTT? Thanks, Rick/K5IZ
Re: [AMRadio] DX-40
Thanks Jack. That sounds like a nice universal solution. Rick/K5IZ [EMAIL PROTECTED] wrote: Yes, as a matter of fact I have set up a number of these little "entry level" rigs with PTT by constructing a little relay box utilizing a 4PDT relay with a low voltage (6-24VDC) coil. You can then key the relay with your mike switch. Its OK to utilize some rectified fil voltage for the relay pwr. Then utilize one set of relay contacts to key the xmtr (most are cathode keyed) via the key jack. Utililize a second set of contacts to key your antenna relay, a third to key the VFO, if you are using one, and the last set to mute your receiver (either make or break according to what your rcvr requires). This little scheme works great and can be moved from rig to rig to quickly add PTT type operation. Good Luck! 73, Jack, W9GT
[AMRadio] Broadcast transmitter
I am in the process of getting a BTA-1R2 that has not been setup on the amateur bands. I have also ordered all the ER magazines I didn't have dealing with that series of broadcast transmitters. I would like to know if any one has had experience in putting the BTA-1R2 (or BTA-1R1 as far as that goes) on the 75 meter band? Thanks, Rick/K5IZ
Re: [AMRadio] Broadcast transmitter
Brad, Hopefully, some of the broadcast transmitter gurus here can point us in the right direction. I downloaded a schematic from BAMA for the 1R1 (I understand they are all very similar) and will study it to see what will be necessary. I feel the best information, however, comes from those with experience. I'll keep you up to date on what I receive or discover. 73, Rick/K5IZ uvcm inc. wrote: I just got a RCA BTA 5F, looking fro the same info, they are close to the same I think, need to share info, Brad KB7FQR
Re: [AMRadio] Broadcast transmitter
Yep... that is one big monster! I'm afraid not even my garage floor would hold that much weight! :-) Rick uvcm inc. wrote: I agree, mine is a 5/10 kw 10,000 pound 15 foot long plus the iron, it can easily run a less than 1 kw Brad KB7FQR -
Re: [AMRadio] RCA BTA-1R1
I'm in Dallas, Texas. Rick uvcm inc. wrote: Where are you located at
Re: [AMRadio] RCA BTA-1R1
Oops! Sorry I don't think you were asking me. Rick uvcm inc. wrote: Where are you located at
Re: [AMRadio] Broadcast transmitter
Wow! Thanks Roger. Great pictures documenting the move and restoration. I would be very interested in the modifications you made to the tuning circuitry. At this point I only plan on having mine setup for 75 meters, but it is nice to know someone who has successfully modified one to accommodate 160, 80, 40 and 20 in case I want to expand the coverage. Could you tell me exactly how wide the cabinet was after you removed the meters, switches, etc.? I'm afraid I'm going to have to back my truck through the side of the house to get mine inside! Also, how much do suppose it weighed when all of the iron, doors and everything else removable was removed? Thanks for sharing your story, pictures and expertise. I can hardly wait to get started on mine. 73, Rick/K5IZ KC8OPP Roger S. wrote: Rick, I have a BTA-1R that is set up for 160/80/40M. Here is a link to some pictures of the process. http://photos.yahoo.com/kc8opp If I can help in any way let me know. Good Luck. 73's Roger KC8OPP
Re: [AMRadio] Broadcast transmitter
Roger, Thank you so much for the information. I only hope my conversion will go as well as yours. I don't know why, but I don't seem to have Orr's book, but will get it. According to the dimensions you gave it will be a tight squeeze and likely some of the facings will have to be removed, but I think she'll go. I'm sure I'll have many questions when the actual conversion begins. I certainly agree with your idea to get it up and running the way it was originally intended before making any changes. Thanks again... 73, Rick/K5IZ KC8OPP Roger S. wrote: Rick, Here is what I did to bring the RCA to 160/80/40M. First thing is get a copy of the "Radio Handbook" by William Orr, W6SAI. This book has all the answers. I started by bringing the transmitter up on the freq the radio station used. I cleaned and repaired as required. I checked all voltages against the book, swept the audio section and made more repairs. When it works as advertised by RCA, then you can start to have fun. I removed the master osc board and built a box for the grid input circuit. I used link coupled coils that are switched in for each band and drive the grids with a Kenwood TS-520. The same band switch is used to changed the taps on the final tank coil. The winding data for the grid coils was borrowed from the 16th edition of the Radio Handbook. I did install a grid coil for 20M, but have never tried the transmitter on 20M, wishful thing I guess. The final tank that RCA installed was completely removed and I used the "L" coil for my tank. Vac variable caps were used for Tune and Load. I put the circuit together on the bench to find the right taps on the coil. Use a non inductive resistor in place of the tube that is equal to the calculated plate load and then a antenna analyzer connected to the output. This put me in the ball park and just some minor changes were needed when the tank circuit was installed in the cabinet. The cabinet measured 32 inches deep and 34.5 inches wide when I removed the meters and switches, just enough room to fit through the doors. I would guess that in the stripped down mode the cabinet still came in around 300 pounds or so. Hope this helps a bit, I will look forward to hearing your RCA on the air. Good Luck and 73's Roger KC8OPP
Re: [AMRadio] Broadcast transmitter
Thanks John. What are those people in New York thinking? 73, Rick www.abebooks.com is (somewhat) your friend - 9 are listed currently, ranging from a reasonable $12.31 (19th ED) in Texas to an unbelievable $203 (1982 ed) in Brooklyn. The hell with 401(k) plans - when I hit 65 I'm just going to list my library on eBay and then I can buy that little Pacific island I've been dreaming of... ;} Cheers John KB6SCO __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
[AMRadio] Valiant
What is the fair market value nowadays of a Viking Valiant that is in excellent operating condition? The front panel and cabinet show normal scratches and wear from use, but over all look very nice. I am thinking of putting it on the market for sale or possibly trade. Thanks, Rick/K5IZ
Re: [AMRadio] Valiant
Thanks Ken, nice looking Valiant. I can't say I like packing and shipping, but would be willing to do it if the buyer would agree to purchase sufficient insurance. You just can't trust any of the carriers to "Handle With Care". Rick/K5IZ kenw2dtc wrote: Rick, Here is my opinion and if you are willing to pack and ship, it will get even more money: http://w2dtc.com/w2dtc-for-sale-or-swap-page.htm 73, Ken W2DTC
Re: [AMRadio] Valiant
Absolutely Jim. Over the years I've received more than a couple of heavy transmitters with the transformers either pulled completely loose or badly twisted, usually breaking some, if not all, of the tubes and whatever else it contacts. I'm not real sure how to go about bracing the transformers, possibly removing all the tubes and tightly packing extra strong bubble wrap inside the cabinet where needed? Thanks and 73, Rick/K5IZ Jim Wilhite wrote: If you do pack and ship Rick, be sure to provide horizontal support for the transformers. Even a short drop can tear the mounting ears from them. 73 Jim W5JO
