Re: [AMRadio] Hallicrafters SR-1000
Chuck Dachis'es book shows an SR-500 'console' which looks like what your describing, but has the HT-30, HT-31, and sx-100 built in. 1955 at 1495$. Then there's an SR-500 Tornado tranciever from 1965, same name way different product. Larry Bill Pancake wrote: I was taking a look back-in-time thru the catalog section in the 1957 ARRL Handbook and saw the ad for a Hallicrafters SR-1000 HF station. It included a SX-101 receiver, HT-32 xmtr and a HT-33 amplifier all housed in a beautifully styled, slanted-front, metal (free-standing) desk/cabinet. Has anyone out there ever owned one of these plug-n-play stations? Am curious as to what it sold for, how many were manufactured (how many are left) and did it operate as sweet as it looks in the photo? It's probably a good thing I was only 8 years old in 1957. I don't think selling glass pop bottles and my 25 cent/month allowance would have been enough to buy one. My cat-wisker galena crystal radio would have to do. Thanks, Bill, wd0x __ 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] NPR, one solution for lousy radio
I'd bet it's one of this guys transmitters: http://stores.ebay.com/FM-TV-Transmitters-and-RF-parts_W0QQsspagenameZl2QQtZkm And here's a used one going in about 2 hours: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemrd=1item=5730774971ssPageName=STRK:MEWA:IT Larry kz0e Brett gazdzinski wrote: No, its different from the one DC sells. Its got no name on it, and I suspect it came out of some very nice equipment. The heat sink is very large, 4x3x3 inches, and from memory, its a watt or 5 watts out, or maybe more. I got it off Ebay, do a search for fm transmitter. Best thing about it is its very clean in output, and high power. It seems to be a good commercial piece of equipment, not a kit or hobby type thing. I use a small digital FM receiver to listen around the property, and my transmitter does better than strong FM band stations in that receiver. I made an antenna out of a pl259 female chassis mount and coat hangers, in the ground plane configuration. its mounted to a vent pipe on my roof, well below the peak of the roof. The ramsy kit on the same antenna had dead spots, and did not go more than a few houses away on the car radio. I have not tried the range of the new transmitter past about 500 feet, but it was fine that far out. Brett N2DTS -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Brian Carling Sent: Sunday, November 14, 2004 11:57 AM To: Discussion of AM Radio Subject: RE: [AMRadio] NPR, one solution for lousy radio On 13 Nov 2004 at 21:52, Brett gazdzinski wrote: I got a real nice 1 watt synthesized transmitter with a digital frequency readout, nice stereo separation and good fidelity. With an outside antenna, it goes blocks, never tried to figure out just how far. 1 watt with a good antenna should go miles. I tried cordless headphones, the ramsey stuff, and other FM transmitter kits, and the range was lousy. I like to wander around while listening, go out back of the house and smoke, make some tea, etc (plenty of old buzzards on the air!). The transmitter was about $100.00 but its very well made, and very clean. Its not a kit, and has a very large heat sink. It has no case, just the display mounted on a circuit board, you push buttons to change frequency and other options, the back of the board holds the heat sink. There used to be a lot of the same things on ebay, I have not looked lately. A cordless mike with some sort of remote keying of the transmitter would be cool, you could be out mowing the lawn and on the air... Brett N2DTS Brett - is this the same thing as the DC Electronics one? Or who makes it? Where do we get one? __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net __ 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] NPR, one solution for lousy radio
Alan Cohen wrote: In any case, it is certainly a lot more interesting than the usual radio fare. It sure beats the likes of morning drive blatherers like Howard Stern and Don Imus, the right wing echo chamber of Limbaugh and Hanity, the semi-automatic no-personality bad music juke boxes that populate the FM band, and 99% of the other garbage on commercial radio these days. Alan Cohen WA2DZL Amen. Hard to find anything worth listening to these days, npr is a broadcasting breath of fresh air wether you agree with the slant or not, IMO. I've gone so far as to build a part 15 transmitter so I can listen to streaming internet stations on my old radios. www.live365.com has the Jack Benny show streaming, what a hoot. Also radio.grassyhill.com is a folk music non-profit in Connecticut that plays a lot of local recordings along with more familiar acoustic fare. I also run solo cello music from a cd, sounds great on the old sets. In case anyone is interested this transmitter is excellent and easy to throw together: http://www.techlib.com/electronics/amxmit.htm It actually sounds good and gets around the house quite well. I built the 'lil 7 transmitter earlier and was not happy with it, may have been my fault but I didnt take the time to dig into it. Larry KZ0E
Re: [AMRadio] NPR, one solution for lousy radio
Oops, the grassyhill people are a '.org', not a '.com'. [EMAIL PROTECTED] wrote: Hi, Neither one of the radio sites you quoted in your email will come up but the transmitter looks neat. Thanks and 73, John, W4AWM __ 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] Home Brew
Hi Brett, Would your friend with the full garage be interested in selling a mod transformer? I've been slowly gathering parts for an 2-813 by 2-813 transmitter and would be interested if he is. Thanks, Larry Brett gazdzinski wrote: A very good choice! Build it right, and it works like a Swiss watch, and is quiet, no fans or blowers needed. 250 to 300 watts out easy, with plenty of audio to go with the carrier. The tubes are easy to find and cheap, there were many surplus transformers that would power the setup nicely, mod transformer size is reasonable. Fair radio used to sell a Collins solder sealed power transformer that would give about 1000 volts at 600 ma full wave center tapped choke input, small size, 110 or 220 volt primary, used to go for $30.00! Variac it and it does 0 to 1500 volts, and will do the rf and mod decks if you want to keep things really simple. I have tried 812a's, 811a's, 572b's in the rf deck, and they all work fine and act the same as far as modulation, drive, and power output go. I have 3 old RCA mod transformers that work with this combo very well, and also work well with the pair of 813's and 4x150a's. 10,500 to 4350 ohms I think they are, and large! They are around, a friend has a garage full of them. I retired the cvm5, as the freq response was quite poor. Building a homebrew rig is incredibly fun, and quite a source of pride if you take the time to build it RIGHT so it works trouble free for years and years, and looks nice. To get parts, you have to network hams, look on ebay, go to fests, buy old homebrew pieces of crap for the parts, and use some of the vendors that sell rf stuff. Even building receivers has not been a problem for me, parts are around, you just have to dig for them instead of going to one place like in the old days. Often, the prices are very reasonable, I picked up a bunch of nice oil filled caps for $10.00 each at Gaithersburg fest last year. I got about 6 of them. They still make new ones, but they wanted $120.00 each! The two big fun points are the chassis chess part, where you Figure out just where things are going, and how you are going to keep things symmetrical, rf and front panel, and the initial testing. Building something, and firing it up and finding it works great is quite fun, and the fun continues every time you use the rig. It also gives plenty to talk about, there is not a lot to say about a rice box into an amp. Old vintage ham gear like Johnson 500, Collins 30k-1, globe king 400/500, and military surplus like the T368, art13, and others can be fun to play with, and sometimes turn up at reasonable prices (but not on ebay). 80 meter night time is hard to break into, and needs good power levels, but 40 in the daytime is very friendly and you can do nicely with 100 watts and up. Valliant's, the Collins 32v series, dx100's, and others in that power class do very well on 40 meters, are fun to play with, and can be got at reasonable prices. People think they are expensive because they used to get them at fests for $10 or $20, but if you pay $500.00 for a 32v3, I think you got a lot of rig (and fun) for the money. The same money gets you an old crappy plastic rice box. Pay $3000.00 for a 30k-1 or some other bigger rig, and you have a lot of fun for the money, people spend that on little plastic boxes that put out 25 or 50 watts! For a lot of guys, playing with the equipment is as much fun as yakking into it. Brett N2DTS -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John Coleman Sent: Tuesday, September 28, 2004 7:08 PM To: 'Discussion of AM Radio' Subject: 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. Run about 1500 volts @ 200 ma for 300 watts plate input on the 812s. Find a Modulation XFMR to match the output of 811A class B (about 12500 ohms as I remember) to the 7500 ohm class C final. 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
Re: [AMRadio] Home Brew
Ooops, sorry, didnt mean to send this to the list, but since I did, havnt heard from Brett yet of course but I'm in the market for a good mod xformer for a 4x 813 transmitter if anyone has one available they'ed like to sell. thanks, Larry Larry Roohr wrote: Hi Brett, Would your friend with the full garage be interested in selling a mod transformer? I've been slowly gathering parts for an 2-813 by 2-813 transmitter and would be interested if he is. Thanks, Larry Brett gazdzinski wrote: A very good choice! Build it right, and it works like a Swiss watch, and is quiet, no fans or blowers needed. 250 to 300 watts out easy, with plenty of audio to go with the carrier. The tubes are easy to find and cheap, there were many surplus transformers that would power the setup nicely, mod transformer size is reasonable. Fair radio used to sell a Collins solder sealed power transformer that would give about 1000 volts at 600 ma full wave center tapped choke input, small size, 110 or 220 volt primary, used to go for $30.00! Variac it and it does 0 to 1500 volts, and will do the rf and mod decks if you want to keep things really simple. I have tried 812a's, 811a's, 572b's in the rf deck, and they all work fine and act the same as far as modulation, drive, and power output go. I have 3 old RCA mod transformers that work with this combo very well, and also work well with the pair of 813's and 4x150a's. 10,500 to 4350 ohms I think they are, and large! They are around, a friend has a garage full of them. I retired the cvm5, as the freq response was quite poor. Building a homebrew rig is incredibly fun, and quite a source of pride if you take the time to build it RIGHT so it works trouble free for years and years, and looks nice. To get parts, you have to network hams, look on ebay, go to fests, buy old homebrew pieces of crap for the parts, and use some of the vendors that sell rf stuff. Even building receivers has not been a problem for me, parts are around, you just have to dig for them instead of going to one place like in the old days. Often, the prices are very reasonable, I picked up a bunch of nice oil filled caps for $10.00 each at Gaithersburg fest last year. I got about 6 of them. They still make new ones, but they wanted $120.00 each! The two big fun points are the chassis chess part, where you Figure out just where things are going, and how you are going to keep things symmetrical, rf and front panel, and the initial testing. Building something, and firing it up and finding it works great is quite fun, and the fun continues every time you use the rig. It also gives plenty to talk about, there is not a lot to say about a rice box into an amp. Old vintage ham gear like Johnson 500, Collins 30k-1, globe king 400/500, and military surplus like the T368, art13, and others can be fun to play with, and sometimes turn up at reasonable prices (but not on ebay). 80 meter night time is hard to break into, and needs good power levels, but 40 in the daytime is very friendly and you can do nicely with 100 watts and up. Valliant's, the Collins 32v series, dx100's, and others in that power class do very well on 40 meters, are fun to play with, and can be got at reasonable prices. People think they are expensive because they used to get them at fests for $10 or $20, but if you pay $500.00 for a 32v3, I think you got a lot of rig (and fun) for the money. The same money gets you an old crappy plastic rice box. Pay $3000.00 for a 30k-1 or some other bigger rig, and you have a lot of fun for the money, people spend that on little plastic boxes that put out 25 or 50 watts! For a lot of guys, playing with the equipment is as much fun as yakking into it. Brett N2DTS -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John Coleman Sent: Tuesday, September 28, 2004 7:08 PM To: 'Discussion of AM Radio' Subject: 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. Run about 1500 volts @ 200 ma for 300 watts plate input on the 812s. Find a Modulation XFMR to match the output of 811A class B (about 12500 ohms as I remember) to the 7500 ohm class C final. 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 __ 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] WTB SB-220
Cory, There's an sb-200 listed for sale here, in Colorado: http://www.qsl.net/n0ara/swaplist.html Larry
