Re: [AMRadio] WTB - MURCH UT-2000A
The Murch UT-2000A is a commercial version of the classic Ultimate Transmatch designed by Lew McCoy and featured in the July 1970 issue of QST and numerous ARRL handbooks.It's called ultimate because it is able to match coaxial-fed antennas, end-fed wires, and with the addition of a 4:1 balun, balanced feeders. The manual is on BAMA and I can send you a copy of the QST article if you need it. Add a good SWR/power meter and once you learn how to tune it, the Murch will match most anything you can hook to it, 160-10 meters, up to a KW. 73, Bob W9RAN __ 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] retro 75
I posted this on AM Fone but I'll toss it out here too, since we've been talking about the Retro 75 a lot. One idea for packaging would be to find a basic old mobile CB (working or not) at a garage sale or thrift store. Gut it, and mount the Retro 75 board where the CB board used to be. You'd have a mic (probably connectorized), speaker, coax and power connections, and two spots for the tuning and volume pots. I'd want to change the appearance so it didn't look like a CB anymore but it would be an easy way to get most of the parts needed, probably for only a few bucks. Just a thought. 73, Bob W9RAN __ 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] Retro 75
On 4/8/2010 7:14 AM, CL in NC wrote: This is a neat little rig, but I agree with the fellow who said he thought a 10 meter version would be great. Another option for 10 is to convert an old CB rig. I still have the one Bob Heil put out that started with a surplus HyGain CB board and added FM and other stuff. Of course a crystal controlled rig would be easier although less versatile, but there were lots of 1 to 5 watt handheld CBs made. 73 magazine ran a number of articles back in the 70s under the general heading of CB to 10. 73, Bob W9RAN __ 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] Retro 75
Those who lust after a portable 40 meter AM radio might be interested in this 40 meter AM Handie Talkie from DZ Kit: http://www.dzkit.com/new_products.htm#ht7 I have no knowledge about them at all, it is more expensive but is also a complete kit with case, mic, etc. You can download the manual if you wish from his website - Heathkit fans will notice a distinct resemblance. It's quite a piece of work. As is the transceiver, based on a quick look at the schematic, a lot of engineering went into the innovative design. Maybe someone owns one and can provide some firsthand information on the HT-7. A note on the DZ Kit webpage says an 80 meter version is coming soon. 73, Bob W9RAN __ 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] Ham Radio Growing in the Age of Twitter
On 4/7/2010 1:52 PM, Dave Rothermel wrote: Is this some kind of joke? You ask this on AM Radio. You need to ask this on appliance radio form. AMEN!!! __ 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] retro 75
On 4/7/2010 5:53 PM, Brett Gazdzinski wrote: I built it, it works well. Great to hear Brett! That was going to be my plan today, but I had a date with Turbo Tax instead ;-(I'm really impressed with the design and am anxious to get mine going. I mentioned having a Yahoo group or such to Dave so we'd have a spot to share pictures and best practices, but he's pretty busy just getting the kits out. So maybe someone will start one up (I'm busy soldering!) 73, Bob W9RAN __ 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] Ham Radio Growing in the Age of Twitter
On 4/6/2010 9:07 PM, Donald Chester wrote: Interestingly, the photo on the ATC web page shows a real homebrew amateur radio station from 1939, not a ricebox station full of plastic radios or a shack-on-a-belt. Now that's pretty darn cool! How many of todays yout' even get that opportunity to develop respect for lethal high voltages ;-) I know they are just using Twitter as an example of modern media, but I just read an interesting statistic - 60% of Twitter users quit using it after one month: http://www.digidaydaily.com/stories/the-twitter-quitters-nielsen-rexamines-twitter-attrition/ Kinda puts those who bemoan the fate of ham radio into perspective. 73, Bob W9RAN __ 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] mods.dk and Heath info
On 3/20/2010 8:55 AM, CL in NC wrote: Let's hope he is not after Collins No worries there, Charlie. Rockwell Collins took a different approach to supporting it's vintage equipment - the following is from www.collinsradio.org: The Collins Collectors Association is licensed by Rockwell Collins to reproduce and disseminate in electronic and written format, any such Collins copyrighted documents related to Collins amateur radio products. Such documents include, but are not limited to, product manuals, schematics, test methods, service bulletins, advertising materials, product catalogs, maintenance information and other technical and product information related to Collins amateur radio products. Rockwell extended the license agreement in 2001 to include all Collins Commercial and Military equipment that can be used for amateur radio purposes. The quality of the scanned manuals is excellent, and if you need a Collins document that's not already posted, my buddy and Archives Manager Larry, WA9VRH, will do everything possible to make it available. That seems to me how it should be, but obviously each company has control of it's own intellectual property rights. The challenge for those who purchase such rights is the cost of legal action needed to enforce them. 73, Bob W9RAN __ 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] Heath info
On 3/19/2010 11:23 PM, Brian Zwiener wrote: Try this site. It is full of FREE Heathkit manuals. http://www.vintage-radio.info/heathkit/ It's a useful site, but schematics only, not full manuals. 73, Bob W9RAN __ 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] Broadcast stuff
On 3/20/2010 11:08 AM, sbjohns...@aol.com wrote: But I'm worried that in the future the hams will be greatly inhibited by the rising noise levels. True, but it's not just hams who are affected - elevation of the noise level affects all services, including digital ones. Already the QRM in the ISM bands, including 2.4 ghz is often the reason for users to move elsewhere, which usually means even more frequencies ultimately become unusable. Rational and proactive steps to address these issues will be far more effective in the end. I applaud all efforts to that end, including those like the recent approval for adding technical expertise to the FCC staff to help them do a better job of regulation and policy-making. Spectrum pollution isn't much different than any other form of pollution, and I'm reminded of the popular bumper sticker when I lived in a Mississippi River town: We can't all live upstream! 73, Bob W9RAN __ 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] FCC Non-cooperation (was ILLEGAL STUFF ON E BAY)
Not to detract from Steve's point, because I agree that RFI from unintentional radiators is a major problem for hams, especially those who enjoy full-range AM audio on HF. But it's important to understand how the FCC approaches the wide range of Part 15 issues - here are a couple of good resources: FCC: http://www.fcc.gov/oet/ea/procedures.html#sec1 ARRL: http://www.arrl.org/tis/info/part15.html#Myths An A2LA-certified RF test lab: www.radiomet.com/documents/FCC_Guide.pdf Once you're familiar with the terminology used to characterize unlicensed devices, I think most will agree that our problems stem primarily from both Class A (intended for commercial, industrial, and business use) and B (residential) Unintentional Radiators. This can involve both Conducted (interference that is carried along power lines and other conductors to other devices, i.e. our receivers) and Radiated emissions (what Steve measured with his spectrum analyzer). The vast majority of such devices are subject to Verification, which is the lowest level of compliance. Manufacturers are on the honor system to do the appropriate testing and label the product accordingly. Even when manufacturers make a good faith effort to comply with Part 15 Verification requirements, the real world implementation may not reflect what was seen in the laboratory. Take for example the noisy LED traffic light that Steve posted about some time ago. Suppose the manufacturer recommended that shielded cable be used between the switchmode controller and the lights to mitigate radiated RFI, but the installers just re-used the unshielded wires that were used for the old incandescent systems. Instant antenna! As hams, we know the length of the wires and whether they're run inside a metal pole or along the side of a wooden one will make a big difference also. Just a made-up example to show that the problem may often not be as simple as going back on the manufacturer of one of the devices in question. Still, the intent of Part 15 is to protect licensed users from interference from unlicensed devices, and the best option we have to enforce current regulations (or potentially get better ones) is to continue to elevate our concerns to the FCC and those who oversee the agency. 73, Bob W9RAN __ 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] ILL LEGAL STUFF ON E BAY
On 3/15/2010 9:34 PM, Bob Peters wrote: I came across this auction on E Bay.. #180354456363, I filed a report with eBay (there's a link on every auction page) just for the heck of it. Wouldn't expect much to come of it, but as Arlo Guthrie sang, what if fifty people a day... Maybe if a bunch of us file a report the guy's chain will get pulled this time, at least. 73, Bob W9RAN __ 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] Comment from N0JEF
On 2/10/2010 6:02 PM, kj4...@aol.com wrote: I have a 200 watt AM transciever What type of transceiver do you have? I'm assuming from the above that you probably have a modern all-mode HF transceiver that includes AM capability. The good news is, many of them can be made to sound terrific. The bad news is, some are pretty fussy to get set up right, and if the ratio of carrier to audio isn't correct, can really sound awful - to the point that they are unintelligible to someone listening on an AM receiver. So, just as a suggestion, I'd make sure that your radio is set to produce good quality AM first. A local ham with AM receive capability could help you out.The amount of RF power shown on the meter is not as high as you might expect, but even a good sounding 25 to 50 watt AM signal will get you plenty of contacts. 73, Bob W9RAN __ 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] AM promo in QST
On 1/20/2010 8:14 AM, CL in NC wrote: But I guess I shouldn't look a $39 a year gift horse in the mouth. Hi Charlie, I agree, it was a good article overall, and the fact that it was written by Joel Hallas W1ZR is significant. He's their Technical Editor and seems to be a good guy who appreciates vintage radio and it's place in the hobby. I appreciate all the increasing coverage of boatanchors, building projects, AM operation, etc - we could do a lot worse. 73, Bob W9RAN __ 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] You must see this.
On 1/11/2010 6:31 PM, Jim Wilhite wrote: I am aghast at this. Wonder what this thing cost the user. He says 160 EU plus 250 shipping ;-) I thought it was homebrew but if you look at the website he's linked, it's a commercial unit made by Phillips in 1955. Better pics there. Impressive! 73, Bob W9RAN __ 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] You must see this.
On 1/11/2010 6:53 PM, Todd, KA1KAQ wrote: Wonder what those rectifiers in the back are? They look to have nickle-plated tops, or maybe it's just a reflection. The front tubes look like 80s. He says they are DCG1/250 rectifiers. Aren't they just about the coolest tube...uh, I mean valve - with that directly heated coiled wire filament and actual plates? Look like they came straight out of Edison's lab! The main rectifiers (flashing blue MVs) are identified as DCG 4/1000s, but they look like 866s to me. The amp runs on 220 V three phase power, that's why there are six of 'em. He says the preamp and driver are EL34 and in a comment on one of his videos says the outputs are QB3, 5/750, together they make 1500 watt of dc power and 1 kilowatt for the speakers. Quiescent current is set to 50ma per tube, full power is 250ma at 3000 volts. And no fan! Maybe some one who is familiar with European valve numbering can clarify what these valves are in US nomenclature. 73, Bob W9RAN __ 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] deliberate encroachmentencroachment , overstuffed in-box
w4...@aol.com wrote: I,ve tried digests, but there is still all that stuff to weed through. While I agree with Todd's comments, I sure will chime on regarding the uselessness of Digests, John. The problem would be solved if everyone would simply trim their replies but as we all know, very few take the time to do this, and as a result the digests are virtually unreadable. You'd think with all the smart guys out there someone would write some code that could do this automatically, and I suppose if it earned a few million a year for Google, someone would have done so already ;-) 73, Bob W9RAN __ 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] I need som advice
Jim Wilhite wrote: Boy my ears are pinned back on this one. I need a 10 inch speaker for my old HQ 129 speaker. Jim - take a look around Parts Express: http://www.parts-express.com/home.cfm Problem is, nowadays anything in the 10 range is likely to be a woofer or sub-woofer that's meant to be used as part of a 2 or 3-way system and what you want is a good old-fashioned full range speaker, which is proving to be harder to find than I thought it would be. But here's a low-cost 10: that I think I'd be willing to try: http://www.parts-express.com/pe/showdetl.cfm?Partnumber=290-262 While the frequency response of this $17 woofer is given as 74-5000 hz, it might sound pretty good. If you wanted more highs, you could try the approach used by Jensen and others who used to make full-range speakers by suspending a smaller PM speaker across the cone with a simple series capacitor crossover to handle the midrange frequencies. 73, Bob W9RAN __ 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] Microphone recomendation
Bob Peters wrote: Also the EV-664 is a great HI Z mic And, in a pinch, it makes a pretty decent hammer! 73, Bob W9RAN __ 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] Microphone recomendation
Todd, KA1KAQ wrote: You can probably make a soup can sound decent with enough processing, These fellers sounded pretty good (and got paid ten dollars) for singing into a can ;-) http://www.youtube.com/watch?v=krwywj_gIjk 73, Bob W9RAN __ 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] 10 meter mp3 player
Todd Carpenter wrote: What a great idea! Now you can get one, mod it for 11 meters and play endless hours of music for all the good buddies! Just add a good beam and a 5 KW pair of boots and you can master all the TV channels in your neighborhood and own the frequency! Speaking of that, I was sitting in a parking lot yesterday and just for grins tuned my FT-100D down to the 27 mhz range. Only a few signals were heard around 27.030 but rather than the redneck-ratchetjawing and obnoxiously overdriven audio and sound effects I associate with this band, there were several very good sounding AM signals, and the ops were complimenting each other on their wideband audio quality! Go figure 73, Bob W9RAN __ 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] You gotta LOVE IT
Bob Peters wrote: took one look at the shack and said NO CAN INSTALL you are a Ham Radio Operator and will kick the you know what out of our system. I have to say I'm a bit impressed that he could recognize a ham radio station when he saw one. Definitely wasn't trained in the we have blank stares store. What a crock otherwise. I'd keep rattlin' cages, ask to see where in their TOS or contract it's stipulated that their equipment can't tolerate RF environments, what field strength level, etc, - send a cc: to the FCC ;-) 73, Bob W9RAN __ 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] 7160Kc - The Video
VJB wrote: http://www.youtube.com/watch?v=PNtIzVm6lZY Very nice Paul! I heard you signing the valuable junk box phonetics, but haven't yet jumped in. AM signals on 40 here in IL have been very good, but the SB QRM tends to take over if no AM blowtorch is on freq. Now I've got to hook up one of my reel-to-reel recorders, it doesn't get any cooler than that ;-) Question: Is the Youtube audio straight off your camera? Or did you dub in audio from the tape? It's amazingly good, next best thing to being there, hi. 73, Bob W9RAN __ 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] 7160 tonight
Todd, KA1KAQ wrote: Was everyone 'listening' or did someone actually call CQ? Sounds like the Collins guys had some fun on 7165, but I bet at least one of them must've at least thrown out their call to get things rolling. Bob WØYVA started it off after his east coast section of the CCA AM net wrapped up at 8 pm Eastern. My buddy Larry WA9VRH who coordinates the AM night jumped in with some 5-landers and did a good job with just his G-76. By the time I figured out how to re-tune the newly restored Globe King 500B here the AM activity seems to have disappeared or moved elsewhere, but it was fun while it lasted. I've advocated to Larry that we continue the 40 meter session after the CCA AM nights, maybe just as a roundtable or callling frequency, to your point, rather than as a formal net. Regardless it's great to hear so many ham signals on 40! Sounds like a whole new band. 73, Bob W9RAN __ 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] Here's a kit you don't see every day
Mike Duke, K5XU wrote: This just came to me from the qrp-l list. Check out the 40 meter AM HT on the web site below. Well it's interesting, that's for sure, thanks Mike. I'm curious as to how they detect AM with a direct conversion or zero-IF receiver. 73, Bob W9RAN __ 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] 833 AM rig
Better yet, get ahold of Dan Krupp, W8NWF in Whitehall MI. He's built a beautiful 833 rig that is cathode modulated by three 6146s and it sounds sweet. There was picture in the last issue of ER, or you can see it about halfway down the page here: http://amfone.net/Amforum/index.php?topic=18339.0 The transmitter sounds every bit as good as it looks! 73, Bob W9RAN __ 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] BroadcastHistory - Home Page
I came across this (new to me) archive of broadcast equpment documentation and thought it would be worth sharing: http://louise.hallikainen.org/BroadcastHistory/index.php/HomePage Interesting historical links and others, too. 73, Bob W9RAN __ 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] shocks, interlocks and misc
Lee Richardson wrote: Everyone who has */not/* performed that manuever, raise your hand! Roger that Lee! While you guys are telling all these shocking stories, just today I noticed my Heathkit bench DC supply was holding a charge quite a while after turning the DC output off. So as to avoid zapping myself, I took the precaution of putting a 47K 2watt on a couple of banana plugs and pluged it across my clip leads to act as an extra bleeder.It wasn't 1/2 hour later when I went to flip the metal toggle switch off with one finger that I let my wrist contact the short exposed resistor lead. Got my attention! I think I need to come up with something a little better, you've heard about how the cure is sometimes worse than the disease? 73 Bob W9RAN __ 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 amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.
Re: [AMRadio] 160 meter antenna
Brett Gazdzinski wrote: If you run any power at all, forget the balun unless you gat some sort of monster one, the usual suspects wont work for even moderate power AM. Got that right! I arced-over the little LDG balun on my ladder line fed dipole the first time I keyed up my T-368. I should have remembered, but it had been OK with the 100 watt class AM rigs I ran before. The balun that's built-into the Heath 2060A tuner I'm using now seems to work fine at high power, but it's about 4 times the size. 73, Bob W9RAN __ 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 amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.
[AMRadio] Beautiful Homebrew AM transmitter
Some needs to go get this in Ohio before those machine-turned panels overcome my better judgment. I can't even guess how many hours were put into them alone: http://cgi.ebay.com/Huge-Homebrew-Am-Radio-Station-Transmitter-80-Meter-All_W0QQitemZ250352977327 Finals are missing - with that style base whaddya think, maybe a pair of 211s? The placard shows dial settings for 80 thru 10 meters, including 15, so that would date it after 1952. Panels, matched meters, quality components - it's obvious whoever built this transmitter was a master craftsman; it' certainly deserves to be put back on the air.Vade retro me, Satana! 73, Bob W9RAN __ 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 amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.
Re: [AMRadio] Beautiful Homebrew AM transmitter
Mike Sawyer wrote: Unfortunately Bob, it lacks a modulator. Its pretty much a CW rig. Well I was debating myself about that, Mike, but I'm not convinced. What I first thought might be a pair of 811s on the second chassis up could be MV rectifiers instead. One would certainly expect to see at least modulator plate meters on a rig like this, and there are two unmarked meters on the top panel, one with a 500ma scale. And if you look at the power supply on the bottom of the rack, there seems to be a lot of iron there, plus four tubes with plate caps visible behind the perforated metal screen. Yet the seller, who obviously knows nothing about it, but makes reference to a very heavy transformer that goes with it. Seems to me there's more stuff here than would be needed for a CW rig. 73, Bob W9RAN __ 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 amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.
Re: [AMRadio] FW: Heath Apache symptoms
kenw2dtc wrote: John K5PGW wrote: I have five Apaches and 4 or 5 Mohawks Send a letter to Washington, it sounds like valid justification for a stimulus package. Or the US Cavalry! 73 Bob W9RAN __ 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 amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.
Re: [AMRadio] GB Latest Completed Project, or How I Spent My Christmas Vacation
Outstanding, Larry! Both the workmanship, and the sentiment behind it. Well done. 73, Bob W9RAN __ 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 amradio-requ...@mailman.qth.net with the word unsubscribe in the message body.
Re: [AMRadio] FW: Terrific old 1937 news-reel clip!
Peter Wittenberg wrote: Bob, I tried it and the link is not working. Thanks anyway... The URL wrapped around, just click on this link it should make things easier: *http://tinyurl.com/5rrrng Neat old clip, especially the early car radio! Myst have been a short picnic or someone had to push-start the old Chevy afterward. 73, Bob W9RAN * __ 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] Re: [Collins20VTransmitters] Collins 20V-2 restoration and conversion
Al Waller wrote: More pictures of my project Looks great Al. Mine's still in the queue...like a lot of other projects! If you're looking for a way to move that 1300 pounds around, take a look at my low-profile mobile base: http://smg.photobucket.com/albums/v652/ranickel/Mobile%20Base%20for%2020V-2/ 73, Bob W9RAN . __,_._,___ __ 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] 40 meters
Brett Gazdzinski wrote: Some interesting stuff in the card file, like KF9KU, Gill, in Millwalkee Wisconson running a ranger, or Jeff,W4OMX in Virginia who used to run Gonset G76, K4HOL, Ralph, North Carolina, with a globe king, why dont i ever hear Globe kings anymore? Brett, can't speak for the others but Gil KF9KU is active on 75 AM at least, heard him this morning on the Midwest Classic Radio Net as usual. Out of a total of typically 50 check-ins on a Saturday there'll be at least 3 or 4 Globe Kings, also today there was one Globe Champ along with the other heavy iron like T-368s and converted broadcast rigs. I'm thinking when we start to get 10 meter openings again we'll hear some of those Globe Kings up there, where some of the other big rigs won't go. 73, Bob W9RAN __ 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] Re: GB 160m AM receiver project
[EMAIL PROTECTED] wrote: My 160m AM receiver project is done. It was based on parts from a Zenith 5-tube broadcast radio Steve, I'll chime in with my congrats on a very cool project. This is what my buddy Fred calls a great hooble. We don't really know the origin of the term, but it's used to denote a something made out of nothing, using parts on hand or as the home decorating babes like to say, re-purposed. The fellow who really got me started in ham radio was very proud of his homebrew six meter AM transceiver which was built on aluminum panels from his kid's old Erector Set and parts scrounged from old TVs. He did purchase one of the Japanese vernier dials for it, which at $1.98 was the only cash outlay. You're reliving the same true ham spirit! Maybe this winter we'll see if my 160 meter dipole can make the path up to Madison. 73, Bob W9RAN __ 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] Automated Ole Buzzards?
Here's everything you'd ever need to achieve AM Immortality - just program it to turn on the receiver once in a while, otherwise there should be enough capacity here to keep your AM station ole buzzarding long after your key has become silent ;-) *http://tinyurl.com/5vccbf Revox, Carousels, random programmer - looks like it's all there (even I think the Fidelpac cart machine that does the time) Probably not many of these complete setups left, it'd be nice to see it restored just for fun. Although it might be hard to find anyone who would admit to having worked on 'em! Especially one old chief engineer who always pronounced it aumanation and got really scarce when it acted up. An honest description at least not for the weak of heart...or back. 73, Bob W9RAN * __ 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] Automated Ole Buzzards?
Jim Wilhite wrote: KOMA in Oklahoma City, a 50 KW R R station used a Schaffer automation system in the 60s. All the music was on 10 tapes run on Ampex playback machines. The commercials were on carts like these and they used the Gates carousels. Hi Jim, Sounds like the standard setup back then, they must have bought head cleaner and Q-tips by the case! Schaeffer was the leader in automation I think. But didn't KOMA run all their music off carts? That would seem to make more sense for a Top 40 station. Missing from this setup but pretty common also was the big vertical cart playback units - my Gates book references Criterion 80 and later models. They held 55 NAB type carts and played 'em in sequence from top to bottom. The programmer could be any human who was able to read a program log ;-) All in all it was pretty neat stuff back in the day. As long as you didn't have to fix it with the boss breathing down your neck! 73, Bob W9RAN __ 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
Phil LaMarche wrote: I didn't catch his name or call sign. John Kanzius, K3TUP. Full story in Feb. 2008 QST. 73, Bob W9RAN __ 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] Which Bands for Summer AM?
Mike Duke, K5XU wrote: Will anyone else here admit to listening to Beaker Street, hosted by Clyde Clifford on KAAY? Hi Mike, Ironically, it was only about a day ago that I shot an email off to Duane, W8DBF who is also a blind ham, on the topic of Beaker Street on KAAY. He'd had an inquiry about an unusual talking blues tune about the boxer Jack Johnson that someone thought was done by Ray Stevens. I can only guess, but whoever would confuse Jaime Brockett with Ray Stevens must have been partaking of the same rope that the first mate did. For those who think this is nuts and off-topic, you're at least half right - but The Ballad of the USS Titanic was one of many obscure yet great tunes that worked their way into my impressionable young consciousness by way of the 50,000 watt voice of KAAY, Little Rock in the late '60s, and the late-night album-oriented rock program called Beaker Street. It was the first underground music program on an AM blowtorch and, to pull things slightly back toward topic, the host, Clyde Clifford was the name a real person - but not the one playing the music. Clyde W. Clifford was the comptroller general of LIN Broadcasting, owners of KAAY, and it was an inside joke that DJs would pick their air names from the suits. The real name of the guy who did the show was Dale Seidenschwarz and his HAM callsign is WA5AVA. Clyde held a First Class Radiotelephone license, required to run a 50,000 watt AM station in those days, and got his start as a transmitter engineer! Those head bangers don't have anything on the Beaker Street gang! Indeed not! And if you're not aware, Beaker Street can still be heard on Sunday nights on KKPT 94.1 in Little Rock, or via streaming audio on the web. http://www.beakerstreet.com/ Now instead of covering half a continent, the program can be heard anywhere in the world, but it's just not the same without the selective fading and QRN. (You can also find playlists and downloadable programs in MP3 format on the site) As Clyde himself says, what a long strange trip it's been! 73, Bob W9RAN __ 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: [Johnson] Re: [AMRadio] EF Johnson museum
Todd, KA1KAQ wrote: Gone. Has been for years. I'm sure you're right Todd, I've looked for something to corroborate this but most of the references that turn up in a Google search date from '98 or so, before the collection was actually sold off. The pictures I took of the Meyerson collection aren't very good due to a camera problem that I was unaware of, but I'll dig 'em out and post 'em sometime. 73, Bob W9RAN __ 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] EF Johnson museum
Peter Markavage wrote: The Thunderbolts (all 3 models), the Adventurer, the Avenger, the Navigator, and the Pacemaker weren't captured in any picture. Hi Pete, Not to pick nits, but according to my Johnson literature, there was the Thunderbolt amplifier and the 6N2 Thunderbolt amplifier, as well as the pictured Courier and the Kilowatt amplifier (which many hams call the Desk Kilowatt but Johnson didn't). Of course they were all Vikings as EFJ used that brand name across the entire transmitter and station accessory lines. As for the Avenger, what's that sitting to the left of the walkie-talkies in photo 10? Looks like the rare and beautiful Avenger to me! According to what I've read, only about 50 were built and most kept by EFJ employees, which is probably why this one survives. I'm happy to see a reasonably complete display like this, in contrast for example to the Leo Meyerson collection which was dumped by the Western Heritage Museum when someone decided it wasn't worth keeping on display. 73, Bob W9RAN __ 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] EF Johnson museum
rbethman wrote: However, WE do NOT know whose hands WHAT passed through and WHEN. Stay tuned, in a few weeks we should have some pics of what the museum looked like when it was in the EFJ factory. 73, Bob W9RAN __ 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] RCA TX on the west coast
Don't know anything about it, but there's a decent-looking RCA BTA-250M on eBay - *http://tinyurl.com/6fjxws Reserve of $380 not met, located in midway between LA and SF. 73 Bob W9RAN * __ 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] [AM Radio] BTA1-R Schematic Diagram Wanted
Rick Brashear wrote: Hi Chuck, You might check with the David Sarnoff Library as they has a extensive collection of RCA manuals. I got one there for my BTA1-R2 and it is an excellent repo that could easily have the schematic enlarged. The link to the home page is: http://www.museum.tv/archives/etv/S/htmlS/sarnoffdavi/sarnoffdavi.htm Rick, I must be missing the link. I found the Sarnoff library here: http://www.davidsarnoff.org/libindex.html but can't turn up any manuals. Could you point me in the right direction? Thanks. 73, Bob W9RAN __ 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] Re: Artificial Aerial Licence
Roger Basford wrote: Well, what you have to remember is that after the introduction of radio in the early part of the 20th Century Britain and the US went completely separate ways with control and legislation. Roger, thanks for that not-boring history - I suspect like many I knew parts of it, but it's an interesting contrast. Having never been a part of the pirate radio movement at the time, I really enjoyed listening to the reunion broadcast online last year, where many of the jocks from Radio Caroline and other pirates were back on the air - but over Pirate BBC Essex from offshore near Harwich this time. Even though they didn't have actual AM transmitters on the ships, it was great fun to listen to, wonder if they'll be doing this again? I knew the pirate broadcasters got the BBC to start playing top 40 music, but didn't realize they actually helped to change the way radio services were licensed in the UK. I would also suspect the Detector Van would have more difficulty with the modern receiver technology - is there a problem with TV bootlegging today, or is paying the license fee just part of the culture? 73, Bob W9RAN __ 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] carrier current transmissions
Carrier current radio was the topic of a neat story in the Oct. 2007 issue of Popular Communications magazine called The Carrier Current Ghost. A BC band dx-er in Rhode Island who recently returned to the hobby noticed this consistent unmodulated carrier on 580 khz. He was able to narrow down the signal to his immediate neighborhood, which included the former Barrington College, home of WBCW, a student-run carrier current radio station on - - 580 khz! Turns out that one of the two transmitters was tucked up behind a basement partion and still going strong even though the station had been off the air for years. 73, Bob W9RAN __ 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] Re: GB FW: ham radio bad
Ben Dover wrote: You found out what the victim's favorite CB channel was, and got hold of a junker walkie talkie (100 milliwatt) crystaled for it. You'd then glue down the transmit button. Aw, that's WAY too much work, Tom! Just clip the speaker leads and let that broadband rushbox detector do the work of jamming ALL channels at the same time. For best results, toss on roof and let it slide in the gutter near the antenna, attach 9ft of nearly invisible wire to make sure it was nice and strong. The nice thing is, those cheapie walkie-talkies came in pairs, and yep, the bozo fell for the same treatment twice! 73, Bob W9RAN __ 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] Using Heath SB 610 Monitor Scope to monitor modulation on AM transmitter
And when you rebuild those HO-10, SB-610s and similar o'scopes, save some money on that high voltage filter capacitor. Allied p/n 343-0231 is 0.22uF 2000VDC 5% tol. with axial leads, and only costs $1.62. 73, Bob W9RAN __ 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] Golden Gate
I've sent this to JT directly but for anyone intersted, scans of the Golden Gate circuit from the CQ Mobile Handbook can be viewed at: http://picasaweb.google.com/RANickels/GoldenGateModulator 73, Bob W9RAN __ 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.
[AMRadio] Negative Resistance Oscillators
I've been having a lot of fun experimenting with zinc negative resistance oscillators. I've used tips from K7NS, Nyle Steiner's Spark Bang Buzz website: http://home.earthlink.net/~lenyr/zincosc.htm to create working audio and RF oscillators using negative resistance devices made from galvanized sheet metal. While it takes patience to find the sensitive zinc oxide spots and the power level is very low, they do work surprisingly well. K7NS used an LC circuit to make an oscillator on the broadcast band, but I thought crystal control would be interesting to try, and to my delight, the output is clean and stable. I've had success with both an old 1196 khz crystal that I had in my junkbox, and a 3.58 mhz TV color crystal. It's definitely QRPp, but coupled to an antenna, the signal can be heard around the house. I've also had good results using a backwards audio-output transformer fed from a CD player as an AM modulator. It's pretty cool to transmit music with good fidelity using a transmitter made our of junk! Take a look at my short video: http://www.youtube.com/watch?v=cDBpBYkRw0Q I'd love to hear from others who are interested in experimenting with this kind of stuff. 73, Bob W9RAN __ 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] Part 15 Devices
Jim Wilhite wrote: I have a question. Suppose you have a Part 15 device in your home that you suspect does not meet the standards of that part although certified as such, what choice do we have in the matter? Jim, I think the key phrase is rotsa ruck! But for what it's worth, detailed equipment authorization submissions and test data can be found at the FCC Office of Engineering and Technology website -there's a search tool at https://fjallfoss.fcc.gov/oetcf/eas/reports/GenericSearch.cfm 73, Bob W9RAN __ 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] HRO-50
On the topic of the HRO-50 - Is anyone familiar with a product detector mod that plugs into the NBFM socket and uses a single 6J6? This one gets around the usual problem of having no way to turn on the BFO when in the NBFM position. The stock AM detector is disabled and BFO runs all the time, with the plug-in providing both AM and CW detection. It's pretty clever, just wonder who deserves the credit. 73, Bob W9RAN __ 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] AMers all old-timers?
Geoff/W5OMR wrote: An AM'er owning a ricebox isn't a sin, nor should it tarnish our image. AM is just but -one- mode of our multi-faceted hobby, that let's us build and operate our own equipment, with a maximum output of 1,500w PEP, regardless of mode. Without demeaning any of our fellow amateurs, I often think that the *ability* to understand and appreciate the difference between a homebrewed Hartley and a ricebox is one of the main things that differentiates us, and gives us pride in this niche of the hobby. And that is truly something to be thankful for. 73 and Happy Turkey Day! Bob W9RAN __ 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] Old-Timer AMers?
Todd, KA1KAQ wrote: Most of the AMers I know are in the 40s-50s category, with older and younger bookends. Methinks they have a bit of a wait ahead. AMers tend to be more active and will likely outlive many of them. Which is also the age group that has a lot of discretionary purchasing potential, something the League is quite aware of. 20 and 30-somethings raising kids and making mortgage payments may be less likely to buy multi-K$ radios...not to mention the fact that AMers are by no means one-dimensional in their radio-related interests. Of course, the soothing mellow sound of AM audio has a lot to do with our expected longevity ;-) 73 and Happy Turkey Day, Bob W9RAN __ 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] open wire line
Jim Wilhite wrote: As for spreaders, use the lightest thing you can find, 1/8 plexiglass cut into strips 1/2 inch wide, Lexan the same or anything. To keep the spreader in place, drill holes in the strips then run the wire through the holes then cut short pieces of wire and wrap one side of the spreader then across it to the other side and wrap, then solder. Here's another idea, FWIW. W7FG makes dipoles out of 16 ga. stranded wire and PVC pipe insulators and mine seems to be holding up well after a couple of years. Gary's got some pretty good pictures here: http://www.w7fg.net/ladder/ladder.htmlHe makes a V-shaped entrance to a round hole through the pipe that secures the wire. The wire snaps-in place, and stays put under all weather conditions, yet can be moved or adjusted as needed. 73 Bob W9RAN __ 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] Open Wire - was AMRadio Digest, Vol 46, Issue 24
Ben Dover wrote: I personally love the stuff. Coax has it's place, but often it's not the best solution to the problem. I've always used coax, but wanted to give open wire a try, and so far I'm very pleased with it. But let's talk tuners for a minute, assuming that we're not directly coupling to a balanced plate tank. I've been running 1500 watts PEP into a Heathkit SA-2060 with it's 4:1 balun without incident, but I've heard all the stories about core saturation, etc.How much advantage would a real balanced line tuner (e.g. a link-coupled tuner or Johnson Matchbox) have? Then antenna by the way is 130 ft, center fed, and primarily used on 75 meters. Also, having read comments by Cebik and others - any thoughts on homebrewing high-power balanced tuners? Thanks and 73, Bob W9RAN __ 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] Station Grounding
Bob Macklin wrote: In addition to that, 90% of the new electronics seems to have a micro computer in it. Every one of these things generates RFI! Yep, and some of them aren't convenient to turn off, such as your thermostat or telephone. And, now that manufacturers are all concerned about being Green and minimizing standby power, most consumer products are going to switching power supplies that are unintentional radiators. Whenever you see a device waiting for you to hit a button on a remote control, or just a soft-touch on/off switch that you know isn't capable of controlling the AC power directly, there's probably a microcontroller inside, powered by a circuit that puts out as much RF as it can while still meeting FCC restrictions. The big switch is a pretty good idea! 73, Bob W9RAN __ 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: Future of AM
Bob Young wrote: AM BCB propagation can change from night to night as do the ham bands which is what can make BCB DX'ing interesting. Indeed, and I was just reading in the National Radio Club newsletter that quite a few BCB DXers are logging digital IDs from HD stations at night. Sounds like a good time for a shameless plug for the worlds oldest and largest MW DX club: http://www.nrcdxas.org/ Some good reports this month of trans-Atlantic DX, despite IBOC interference. Gentlemen, sharpen up your loops! 73, Bob W9RAN __ 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] Festering fleas!
John Flood wrote: I'd better stop before the Gods of AM suck the electrolyte from my caps as punishment for playing with FM stuff. Well, let's see...analog TV transmitters are AM... 73, Bob W9RAN __ 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] Receivers
[EMAIL PROTECTED] wrote: I'm at my ancestral home this week, and I just loaded my old RBB navy battleship receiver into the car to take home for possible use as the mate to my Gates BC1T transmitter on 160m AM. 82 lbs without power supply! I've got to find a manual or at least a schematic, and build a power supply for it. I'm hoping that, as a prewar receiver, it won't need a bunch of parts replaced. Steve I'll bet your assumption will be proven correct. I had an RBB show up in my driveway one day years ago, and it's a fantastic receiver. Other than wiring around the unobtainium plug to a Lambda regulated p/s I haven't touched it and the dial calibration is still right on the money. I'm sure as with any receiver of this vintage, it's just luck. I'll see what I have in the way of power supply wiring and schematic. I listen to AM on everything from S-38 to SDR, but my current favorite AM receiver is an HRO-50R1. Love that full range push-pull audio and the PW dial. 73, Bob W9RAN __ 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] Shipping Practices
You're talking about what is called blanket wrap or pad wrap freight service, Google will provide companies you can contact for quotes. Just be sure to check out the specifics as to how and where the item is to be picked up and delivered (extra charges apply for lift gate, etc). 73, Bob W9RAN __ 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: AM'ers Age Poll Online
A.R.S. - WA5AM wrote: Maybe the question about How long have you operated AM is the problem. Some like me who came onto the scene in the mid-60s' got caught in the mad rush to get away from AM and into sideband in order to fit in with the crowd. Many of us also who'd tried AM using low power novice type rigs, we never experienced the good side of AM back then, but now, as Yogi would say, it's like deja vu all over again! 73, Bob W9RAN __ 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] Boatanchor Transmitter FS in Salem, OR
I guess at 55 I'm about average age for this stuff. One thing I've noticed in other vintage hobbies is that the ones that seem to thrive have a feeder system for brining new blood into the hobby. I see this with the large local antique engine club, for example, where their annual show (this weekend) is very family-oriented. Same for the hot-rod and collector car groups, antique malls, etc. I'm no better at predicting the future than anyone else, but it seems logical that the best way to prolong this aspect of ham radio is to find ways to encourage newcomers and younger hams to get involved. Seems to me these folks are more likely to be intrigued by a massive, glowing tube radio than by a handie-talkie that's twice the size of their cellphone and doesn't even have a camera or play MP3s! 73, Bob W9RAN __ 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] Looking for Rack Hardware.
Parts Express is another good source for racks and rack hardware (Pro Audio stuff): http://www.partsexpress.com/webpage.cfm?webpage_id=3CATID=46ObjectGroup_ID=807 73, Bob W9RAN __ 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 Gates BC-1T Project
ROLYNN PRECHTL K7DFW wrote: Regarding the antenna connection/HV timing issue. To be 100% sure that there would be no catastrophic incidents if the HV was applied before the antenna connection, I use a Johnson 250-39 TR switch. That way the antenna is always connected to the TX. Sounds like a good idea, Rolynn. As the proud new owner of a T-368E I'm impressed with its time-sequential T/R circuitry, and I recall seeing a construction article within the past year or so for a simple sequencer that could be adapted to BC rigs. 73, Bob W9RAN __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net 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] OT but of interest to some
The Big 89 Rewind aka WLS MusicRadio is back the air today - listen live at www.wlsam.com if you're not within the sound of Lyle Dean's voice. Great to hear all the old jocks and news/sports voices back on the air. And a new website of WLS history: http://www.wlshistory.com/ I guess the High Powered Radio Executives Larry Lujack always talks about realized people wanted to hear this, and that it wouldn't kill their Rush listeners if they heard a record being played on the radio... 73, Bob W9RAN __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net 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] Better AM audio for a EF Johnson Messenger2
This reminded me of what's in this box I keep tripping over...anyone want to mess with a Johnson Messenger I drop me a note, $20 plus shipping. 73, Bob W9RAN __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net 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] Gates BC-1T
This thread reminds me of the article that appeared in the local newspaper this week, explaining that the local AM radio station's absence from the airwaves was only temporary, due to a transmitter problem that couldn't be fixed because parts for the transmitter are no longer available.It's a 5 KW rig, and while no details were given, the inference was that a big item failed, which leads me to suspect power supply iron. But geez, what kind of BC engineer couldn't hooble up a pole pig replacement (borrowed from the electric company) in a couple of hours, like I remember a CE doing back in the 60's? Instead, a new transmitter will be installed, capable of all the modern digital noisemakers... bah! I'd think it would be worthwhile to salvage the 5KW rig for parts, not much use as-is. 73, Bob W9RAN __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net 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] Re: [ForSale-Swap] FS: SX-115 , Boatanchor Test Gear, Teletype TU’s, HP 8640B
rbethman wrote: Just MY $0.002 worth, BUT Don is a top drawer Class Act! A fact I was just reminded of this past weekend. A number of years ago, Don sold me a terrific Mackay 3010B receiver. I happened to come across the little package of spare tubes, including a couple of the rare Amperex jobs used in the front-end that Don threw in with the deal. In this day when some sleazy characters yank installed filters and sell manuals separately to make an few extra bucks, it's great to have guys like Don who consistently go above and beyond. 73, Bob W9RAN __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net 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] Homebrew Tx in SLC
Hopefully someone near enough to Salt Lake City can give this baby a new home: Item number: 140102118464 on the 'bay. The pictures are one big image but if you enlarge it you can see quite a bit of detail. Pair of 813s and what looks like pretty complete documentation. 73, Bob W9RAN __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net 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] AM boatanchors galore! Every Single Minute
Tom Chesek wrote: Everyone says can and should but try it yourself. Not all audio or video files playable on the internet can be saved Not even all Google videos, depending on copyright ownership - but this one can. Go to http://video.google.com/playerdownload and download their player, then re-load the video. It will be saved locally (default location is \My Documents\My Videos\Google Videos) for later playback There's also a nifty thumbnail feature that helps locate sections of interest. Note: it's a 138MB file! 73, Bob W9RAN. __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net 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] Transmitter fitting
Rick Brashear wrote: However, the RCA BTA-1R2 is not in modules. It is a 7' tall 32 wide (at the most narrow point), 1500 pound commercial broadcast transmitter. Hi Rick, Sounds like a challenging project - but worth the effort. I'm afflicted with heavy metal fever that's not limited to just radios, and there are some interesting stories on the web of how home machinists have moved things like milling machines and lathes into basement workshops, a process that generally requires at least partial disassembly and careful planning. Whether it's a 2400 pound Bridgeport or a 1500 pound RCA, both are beyond the capabilities of most amateurs, and my suggestion is to consider hiring a professional. A piano mover may be willing to help you out, otherwise look for a professional machine rigger who has the equipment and know-how to do the job safely. I always figure I can do anything myself, but when it comes to moving really heavy stuff, I've learned it's worth the cost and peace-of-mind to hire a pro. 73, Bob W9RAN __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] Sunspots are coming, too
Just in time for Christmas-vacation tinkering: Item #1 Johnson Whiteface Messenger 1. NOT a CB rig, dangit! It's a Ten Meter Rig, Awaiting Conversion, (just happens to have some CB crystals inside). No mike, but has a stub cable with Amphenol connector for one. No power cord and you'll need an RCA adapter for the antenna jack. Good shape and looks complete, but untested. I can at least provide power connector info. $25. Sunspots WILL return! Item #2 - Johnson Blackface Messenger II.(or 2, or Two, whatever) This is the hot deal with Tunable receiver. Has a Turner mic wired in but missing the p/s cable and RCA antenna adapter. Good shape and looks complete, but untested. $25. Lord it over the poor saps who have to buy receive crystals! I'd prefer Paypal but can take other forms of legal tender. Prices do not include shipping, which will of course be at actual cost, naturally. Thanks and 73, Bob W9RAN __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
[AMRadio] Kit Transmitter
Wonder what would happen if ole Fritz Bauer were still offering his kilowatt kit today? After adding a multiband tank of course ;-) http://www.rwonline.com/reference-room/milestones/2006.07.19-08_rwf_milestone_bauer_1.shtml Bauer 707 schematic available on this site as well. 73, Bob W9RAN
Re: [AMRadio] White Face Johnson
Bob Peters wrote: All I can say is WOW... Looking forward...to getting it on the air... Hi Bob, Now you can start looking for a Johnson PA/85 amplifier, which was designed to work with the later vintage Messenger AM business radios. It runs a 6883 final with solid state plate modulator and has built-in T/R relay so should work with most any 5 watt exciter, but I've not tried mine yet. 73, Bob W9RAN
Re: [AMRadio] White Face Johnson
Peter Markavage wrote: That reminds me Bob; somewhere around here I have one Polycomm's business band amplifiers still wrapped in plastic that came out of a walk-in dumpster when they were junking a bunch of stuff from a closed NJ location. I didn't know Polycom made one, Pete but it sounds liek a neat mate for your HA-410. This Johnson came from a local guy who ran an aerial spraying business, using the old AM business band located just above 10 meters. He gave me several of the solid state mobiles too, just wanted it gone. Turns out he was trying to copy some information in-flight and the skip was in and he ended up spraying the wrong field. Ripped it out and went FM. I don't know how widely this AM business band was used, but you do see amps from various CB makers like Sonar on eBay and at hamfests. What I thought was cool about the Johnson PA/85 is the high level modulator vs. a linear amp. 73, Bob W9RAN
Re: [AMRadio] FS: Radio Books List Eight
Merz Donald S wrote: For Sale: Radio Books List Eight. All prices plus $2 US media mailing. Mailing cost combined on multiple books. The General Electric Story, A Photo Histroy, Volumes I, II and III. Volume I, The Edison Era 1876-1892, Volume II, The Steinmetz Era 1892-1923. Volume III, On The Shoulders of Giants, 1924-1946. Published by Elfun Hall of History, 1976-1979. These run 60-75 pages each and are full of great history and historical photos and drawings. These are chronological, going through the history year-by-year. Nice condition except some slight damage to Volume III where something was stuck to it and pulled away the surface of the cover in a 1/8 inch line down the front. A great read. $20 Hi Don, I'll take the GE books if not spoken for, thanks. 73, Bob W9RAN
[AMRadio] Neat old homebrew rig
On eBay - Item number: 5872418151 - Dallas area. Described as TDE transmitter built into a shipboard TAJ-19 rack, with BC-610-H power supply Great vintage shack photo too. Hope someone is able to keep this one out of the landfill. 73, Bob W9RAN
[AMRadio] Globe King questions
I'm restoring a Globe King 500B that was partially disassembled for use as a SSB linear. I have the original 75K ohm 100 watt bleeder resistor but can't find a pair of holes that match up - can anyone tell me approximately where on the p/s chassis the bleeder was mounted? (An under-chassis photo would be great). I'd also like to know if the 866A sockets were on standoffs and the routing of the wire from center tap of the 2.5 volt filament tranny to the HV choke, if anyone has that kind of memory for detail (an under-chassis photo would be great!) Thanks and 73, Bob W9RAN
Re: [AMRadio] Globe King questions
W5OMR/Geoff wrote: Man, check with Mike/WA5CMI. He has -completely- restored his GK-500, and has worked on many more. Thanks Geoff and Dennis - I found it. Actually I saw this Globe King in his garage in San Antonio before Gary K5JWK sold it to him, and it was every bit the rusty mess Mike's photos indicate. Mike just did a fantastic job! It looks like WRL reversed the clips that go in the end of the bleeder resistor, I'll see if I can find some holes that line up now. Also looking for modulator mods for the GK500 or advice on same , thanks. 73, Bob W9RAN
Re: [AMRadio] Re: How can we rid the HF bands of AM ?
Jim Wilhite wrote: We have a couple of hams in congress. Why not email them, especially hams in their district. One very good argument for going to DC input is the accuracy of measurement. Or maybe just tell them that running 1KW AM will help BPL...they seem to go for logic like that... 73 Bob W9RAN
Re: [AMRadio] Home Brew
If I were going to build with tubes again and two hundred watts was the carrier output that I wanted. I would use a pair of 812s in push pull class C and modulate with a pair of 811As push pull class B. I have parts of an old homebrew 10 meter AM transmitter and it looks like this is what he did too, only using 811s in the finals as well as modulators. Probably the simplest/cheapest way to get some power back in the early 50s. 73, Bob W9RAN
Re: [AMRadio] R-274 Reciever
Hi Geoff, I've got one too, nice radio. 73, Bob W9RAN - Original Message - From: Geoff/W5OMR [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Thursday, August 19, 2004 9:00 PM Subject: Re: [AMRadio] R-274 Reciever I'm trying to get a feel for how many of these fine ol' recievers there are, out there. I've got two - an R-274, serial 461 and an R-274D, serial 1142. I know Dave/W4QCU has one, just outside of Knoxville, and I was recently contacted by a serious SWL who's got another. That's 5, that I know that are still in use. Are there any others? My R-274 is he mil version of the Hallicrafters SX-73. It's at my home in Houston Texas but doesn't get used much as I prefer the R-390a. Well, that makes 6. Someone said they knew someone else who bought one that was still in the crate and gave it to someone else (over in Northern MS) bringing the total to 7, so far. More? 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
Re: [AMRadio] Tower Construction
Yep, so I've heard. Making crankups must be like making ladders, half the cost is insurance. The one I have is about 40 ft. and is 3 sections of aluminum tower with steel shit in between for the pulleys. Most of them were rusted and it cost me a fortune to have new ones welded up. Still a cheap tower compared with new. My main tower is 55' Rohn 25 with the tilt-over in the middle. Chickenshits like me don't climb! But Rohn finally quit making these cuz too many dumbshits didn't follow instructions and den dey fall down go boom. Bob - Original Message - From: Larry Saletzki [EMAIL PROTECTED] To: [EMAIL PROTECTED]; Discussion of AM Radio amradio@mailman.qth.net Sent: Sunday, June 13, 2004 7:28 PM Subject: Re: [AMRadio] Tower Construction Hi Brian, I am happy to report that Rohn and their products are not dead. A company called Radian bought out Rohn. See: http://www.rohnnet.com/ for more information. The best news is they are restarting the old Rohn manufacturing plant in the Peoria, Il. area. If I remember correctly someone else bought out Rohn's galvanizing facility here in the Peoria area. (I believe it was someone from the Chicago area but could stand to be corrected) So Radian is having this company do their galvanizing. (again this could stand to be corrected) This link will take you to the original Rohn catalog: http://www.rohnnet.net/rohnnet2004/html2004/index.html Hope this helps. How many of you remember that Rohn made a crank up tower?? I was interested in buying one a few years ago but when I called Rohn they would not admit having built one. I finally got some documentation on the one I was interested in. It was not rated very high for windload for it's size so I passed on it. Later I acquired a number of old QST's that had a number of ads in them for Rohn crank ups. They must have had some serious issues with them. 73 Larry WA9VRH - Original Message - From: Brian Carling [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Sunday, June 13, 2004 5:11 PM Subject: Re: [AMRadio] Tower Construction I know that with the Rohn 25G they recommend no more than three sections without guys. Not sure on the 55G, but it might be on someone's web site. I heard Rohn went out of business which is a D*n shame, in my opinion. They were a great company that has supplied great products for decades. Someone is probably now selling a cheap Chinese imitation made out of recycled pot metal and retailing for 90% of the Rohn price! snip ___ AMRadio mailing list AMRadio@mailman.qth.net http://mailman.qth.net/mailman/listinfo/amradio
Re: [AMRadio] KW restoration and need a bit of help on this one
Hi Pat, I'd looked at your transmitter pics before but never had read about Mr. Tucker himself. Thanks for posting the pictures and other information, so much of the human aspect of our hobby has been lost over the years. Glad you're having success with the transmitter too, but be sure to keep one hand in your pocket around the HV, I'm sure Texas Power and Light built those trannys to last! 73, Bob W9RAN
Re: [AMRadio] FW: Homebrew receiver
Hi Pete, Your e-mail, aside from provoking my BA-envy response ;-) - reminded me that I need to order the big Signal One CX-7 operating and service manual. It's listed in your catalog for $49.20, must be a big mutha! Can you take payment via Paypal? Much faster, if so I'll do it today, just let me know what your account name is. Thanks and 73, Bob W9RAN
Re: [AMRadio] It followed me home Ma. Can I keep it?
What a beauty, Mark! On the other end of the spectrum, here's pics of several transmitters that did not survive the California fires. May they RIP! http://earthsignals.com/add_CGC/KCAL_KFRG_KSGN_fire.htm 73, Bob W9RAN
