[AMRadio] GONSET METER NEEDED
Hi All...Am in need of a meter for a Gonset G-76. From what I understand it is the same meter that Was in the Comunicator. So Help please guys... Very Best 73's Bob W1PE The Voice of Mesquite www.w1pe.com Money is only temporary, but radios are forever - Jim Little aka the old dog/K5BAI __ 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] EFJ Ranger I accessory plug needed
GM to the list.. Still looking for the 9-pin (male) plug for the RANGER I accessory socket. Anyone have one they don't need? The restored Ranger is eagerly awaiting. 73 de W4MIL Chuck Palm Coast, FL More new features than ever. Check out the new AOL Mail ! - http://o.aolcdn.com/cdn.webmail.aol.com/mailtour/aol/en-us/text.htm?ncid=aolcmp000503 __ 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] Class action?
Re: Part 15 Well, is there a lawyer among us that could field a class action lawsuit against every Part 15 device manufacturer from nursery monitors to traffic lights? 700,000 hams, being interfered with constantly, being made out to be the bad guys, having to put up with it because of a spineless FCC, ought to have their day in court. Charlie, W4MEC in NC Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs __ 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
I'm finding the LCD widescreen TVs to be reasonably RF-quiet. The big CRT TVs are a bit more noisy, but the plasmas are terrible. Steve WD8DAS ** Check out AOL's list of 2007's hottest products. (http://money.aol.com/special/hot-products-2007?NCID=aoltop000301) __ 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] Class action?
Charlie, W4MEC in NC said: is there a lawyer among us that could field a class action lawsuit against every Part 15 device manufacturer I'm with you in principal, but what you are asking is similar to going after speeders because the police aren't pulling people over and issuing tickets. Secondly, when a class action goes after a manufacturers pocket book, it would not be unreasonable for that manufacturer to go public and the media and play some of the audio that is on the amateur radio bands and say: this is the group that is trying to stop us from making baby monitors. Some of the conversations on amateur radio are nasty, immature, rude and embarrasing. These are the ones that will be culled out of the great majority of respectable ones. If the police / FCC are not doing their job, that is where the pressure should be placed. 73, Ken W2DTC __ 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] Class action?
I would carbon copy my FCC complaints to local House and Senate members. klc - Original Message - From: kenw2dtc [EMAIL PROTECTED] Date: Tuesday, December 4, 2007 10:56 am Subject: Re: [AMRadio] Class action? To: Discussion of AM Radio in the Amateur Service amradio@mailman.qth.net Charlie, W4MEC in NC said: is there a lawyer among us that could field a class action lawsuit against every Part 15 device manufacturer I'm with you in principal, but what you are asking is similar to going after speeders because the police aren't pulling people over and issuing tickets. Secondly, when a class action goes after a manufacturers pocket book, it would not be unreasonable for that manufacturer to go public and the media and play some of the audio that is on the amateur radio bands and say: this is the group that is trying to stop us from making baby monitors. Some of the conversations on amateur radio are nasty, immature, rude and embarrasing. These are the ones that will be culled out of the great majority of respectable ones. If the police / FCC are not doing their job, that is where the pressure should be placed. 73, Ken W2DTC __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] Building
I'm currently working on the glow of a 4-1000A through a window, driven by a DX-60 w/HG-10 vfo. It ought to do well on the bands! Bob - N0DGN jeremy-ca wrote: Only to be outdone by a pair of 304TH/TL's ! Ive a pair of VT-127A's also. I wonder how they would do as a PP oscillator down at around 1000V? Modulated by ?? Carl KM1H - Original Message - From: Barrie Smith [EMAIL PROTECTED] To: Discussion of AM Radio in the Amateur Service amradio@mailman.qth.net Sent: Monday, December 03, 2007 9:44 PM Subject: Re: [AMRadio] Building Hello, All: I'm sure that nobody, except my self, will find this interesting or exciting, but . . . the shack, just at this moment, is being lit only by two VT-127A filaments. That bright yellow glow is quite a sight! 73, Barrie, W7ALW _ __ 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] Building
I'm currently working on the glow of a 4-1000A through a window, driven by a DX-60 w/HG-10 vfo. It ought to do well on the bands! Bob - N0DGN __ 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] Building
My last 4X1 amp, back in the 80's, ran a pair in AB2. I used swamped grid input with a toroid 4:1 step up from the T4XC to get the necessary grid voltage. Screen and bias were all SS rectifiers but tube regulators. With 5200V it put out some serious power. Since it was a build to order it got only minimal air exposure here but the customer was happy. It is now at its 3rd home. Ive been wondering, besides the drive requirement, why swamped grid cant be used in Class C? It would eliminate the neutralization requirement with some tubes as well as the hassle of a bandswitching input. Carl KM1H - Original Message - From: rbethman [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Tuesday, December 04, 2007 1:19 PM Subject: Re: [AMRadio] Building Chuck, No pictures as of yet. I've got a Harris 4KV power supply for plate power. I'm looking at developing bias supply(s) for the 4-1000a, and driving it OTHER than GG. I figure I can get a better rig by doing so. Bob - N0DGN [EMAIL PROTECTED] wrote: Say Bob Got any pictures of that 4-1000A lashup? I've been collecting parts for a 4-400 amp and hope to start on it in January when the temps get a bit cooler in the shop. Have a DX-60/HG-10 just waiting to drive something. 73 W4MIL Chuck Palm Coast, FL __ 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] FS: 330+ Ham Band Crystals
For Sale: 330-360 crystals, all of them in the ham bands or on useful frequencies (references). Almost all of the crystals in this lot are FT-243 size. There's some HC-6U and a very few odd DC-34 and CR-1A types. As a lot, I'd like to get $500 plus insured mailing cost for them. This works out to about $1.50 each. First preference will be given to someone that wants the lot. Again, these are all in the ham bands. In groups by band I'd like to get $2.50 each for them. Here is a count of the number of crystals in each band group: 160M - 14 80M - 60 Colorburst - 20 40M - 83 30M - 9 20M 10M - 20 11M - 6 6M - 40 2M - 55 10.7MC - 5 Reference - 22 Misc HF Ham Bands - about 25 I have a partial list of the frequencies in each band in PDF format. It's got errors in it but is vaguely, kind-of, maybe close to accurate. Please e-mail me if you'd like the PDF file. Also included is a small box of maybe 75 unsorted crystals. I don't want to sell any crystals one by one. Please don't e-mail me asking if I have a crystal for XXX frequency. Those e-mails will be deleted--sorry. Thanks for looking. 73, Don M. __ 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] FS: 330+ Ham Band Crystals
Hi Don, I'll take the 14 - 160M xtals if you don't sell them all. Gene Rippen - Original Message - From: Don Merz [EMAIL PROTECTED] To: AM Radio List amradio@mailman.qth.net; BASWAPLIST [EMAIL PROTECTED]; [EMAIL PROTECTED]; Glowbugs [EMAIL PROTECTED] Sent: Tuesday, December 04, 2007 11:50 AM Subject: [AMRadio] FS: 330+ Ham Band Crystals For Sale: 330-360 crystals, all of them in the ham bands or on useful frequencies (references). Almost all of the crystals in this lot are FT-243 size. There's some HC-6U and a very few odd DC-34 and CR-1A types. As a lot, I'd like to get $500 plus insured mailing cost for them. This works out to about $1.50 each. First preference will be given to someone that wants the lot. Again, these are all in the ham bands. In groups by band I'd like to get $2.50 each for them. Here is a count of the number of crystals in each band group: 160M - 14 80M - 60 Colorburst - 20 40M - 83 30M - 9 20M 10M - 20 11M - 6 6M - 40 2M - 55 10.7MC - 5 Reference - 22 Misc HF Ham Bands - about 25 I have a partial list of the frequencies in each band in PDF format. It's got errors in it but is vaguely, kind-of, maybe close to accurate. Please e-mail me if you'd like the PDF file. Also included is a small box of maybe 75 unsorted crystals. I don't want to sell any crystals one by one. Please don't e-mail me asking if I have a crystal for XXX frequency. Those e-mails will be deleted--sorry. Thanks for looking. 73, Don M. __ 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. __ This email was pre-scanned by Spam Guardian A Service Provided by http://www.foothill.net __ 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] Building
- Original Message - Subject: [AMRadio] Building Date: Tue, December 4, 2007 13:53 From: jeremy-ca [EMAIL PROTECTED] Ive been wondering, besides the drive requirement, why swamped grid cant be used in Class C? It would eliminate the neutralization requirement with some tubes as well as the hassle of a bandswitching input. I was attracted to this design in the original incarnation of the RF deck for my PDM transmitter - at the time it was a class C final using a single 4-400. To get enough grid drive I was trying to use (IIRC) a 16:1 Guanella transformer design out of Jerry Sevick's book, for a 4X voltage step-up from a 50 ohm source. Worked acceptably except at the edges of the intended frequency coverage (160M 10M), where the VSWR was out-to-lunch, even into a purely resistive load. Also, as I recall, 15M was sort of marginal. Once the parasitic reactance of the grid circuit was added, of coarse, things got even worse. I'm not saying it can't be done, but I couldn't get it to do what I wanted with a reasonable amount of effort expended. So I went to a variable T-network input and swamped the grid with about 3000 ohms non-X (in fact I bought the resistors from Radiokit!). More knobs to twiddle, but worked much better for me. Same input circuitry is in place now with a pair of 7527A's. 73, -Larry/NE1S __ 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] UTC CG-302
Still digging through the junk and came upon an unidentified transformer, excepting that it has a tag that says: CG-302 Anyone know what it is? 73, Barrie, W7ALW __ 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] UTC CG-302
came upon an unidentified transformer, excepting that it has a tag that says: CG-302 It's a UTC commercial grade plate transformer: 950-750-0-750-950 at 360 mills. Primary at 105, 115, 220, 230 VAC 73, Ken W2DTC __ 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] UTC CG-302
Transformer, plate, UTC CG-302, 1900 or 1500 VAC CT, en venta en ...- It's on Google Philip LaMarche LaMarche Enterprises, Inc. www.instantgourmetspices.com www.w9dvm.com 800-395-7795 pin 02 727-944-3226 FAX 727-937-8834 NASFT 30210 W9DVM -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Barrie Smith Sent: Tuesday, December 04, 2007 5:31 PM To: Discussion of AM Radio Subject: [AMRadio] UTC CG-302 Still digging through the junk and came upon an unidentified transformer, excepting that it has a tag that says: CG-302 Anyone know what it is? 73, Barrie, W7ALW __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] UTC CG-302
This auction is for an unused UTC plate transformer, Model CG-302. Primary voltage is 105, 115, 210, 220, or 230 volts AC. Secondary AC voltage is 950-750-0-750-950 volts; or you could also say either 1900 or 1500 volts AC, center-tapped. DC voltages and currents with suitable rectifiers are 760 or 610 volts in a full wave center-tapped configuration at 360 mA. In a full wave bridge configuration there will be 1520 or 1220 volts at 250 mA. These are continuous ratings and with a choke-input filter, I believe. A capacitor-input filter will give you slightly higher voltages. ICAS current ratings will be higher. The transformer is 5-5/8 inches in diameter by 7 inches high. The bottom flange is 5-3/4 inches square. The terminals stand another 1/2 inch high. The terminals require a 4 inch diameter cutout. Condition is unused as shown in the pictures. The top is a little scuffed because that's how it sat on the shelf. The terminal connections are written on the side with a marker. They will wipe off with a little alcohol. Philip LaMarche LaMarche Enterprises, Inc. www.instantgourmetspices.com www.w9dvm.com 800-395-7795 pin 02 727-944-3226 FAX 727-937-8834 NASFT 30210 W9DVM -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of kenw2dtc Sent: Tuesday, December 04, 2007 5:30 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] UTC CG-302 came upon an unidentified transformer, excepting that it has a tag that says: CG-302 It's a UTC commercial grade plate transformer: 950-750-0-750-950 at 360 mills. Primary at 105, 115, 220, 230 VAC 73, Ken W2DTC __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] UTC CG-302
The is 950-750-0-750-950 @ 360 ma. Jim/W5JO Still digging through the junk and came upon an unidentified transformer, excepting that it has a tag that says: CG-302 Anyone know what it is? 73, Barrie, W7ALW __ __ 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] UTC CG-302
Gee Whiz, that was fast! Thanks, guys. Another question is: What are the characteristics of the Gates 250 watt BC transmitter's modulation transformer? Turns ratio, etc. Also, since it's a BC modulation transformer, and designed for continuous duty, might it modulate more than 250 watts? 73, Barrie, W7ALW __ 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] FS: 330+ Ham Band Crystals
Sorry Gene, they sold as a lot. Thanks. 73, Don M. - Original Message From: Soundval [EMAIL PROTECTED] To: Discussion of AM Radio in the Amateur Service amradio@mailman.qth.net Sent: Tuesday, December 4, 2007 3:46:19 PM Subject: Re: [AMRadio] FS: 330+ Ham Band Crystals Hi Don, I'll take the 14 - 160M xtals if you don't sell them all. Gene Rippen - Original Message - From: Don Merz [EMAIL PROTECTED] To: AM Radio List amradio@mailman.qth.net; BASWAPLIST [EMAIL PROTECTED]; [EMAIL PROTECTED]; Glowbugs [EMAIL PROTECTED] Sent: Tuesday, December 04, 2007 11:50 AM Subject: [AMRadio] FS: 330+ Ham Band Crystals For Sale: 330-360 crystals, all of them in the ham bands or on useful frequencies (references). Almost all of the crystals in this lot are FT-243 size. There's some HC-6U and a very few odd DC-34 and CR-1A types. As a lot, I'd like to get $500 plus insured mailing cost for them. This works out to about $1.50 each. First preference will be given to someone that wants the lot. Again, these are all in the ham bands. In groups by band I'd like to get $2.50 each for them. Here is a count of the number of crystals in each band group: 160M - 14 80M - 60 Colorburst - 20 40M - 83 30M - 9 20M 10M - 20 11M - 6 6M - 40 2M - 55 10.7MC - 5 Reference - 22 Misc HF Ham Bands - about 25 I have a partial list of the frequencies in each band in PDF format. It's got errors in it but is vaguely, kind-of, maybe close to accurate. Please e-mail me if you'd like the PDF file. Also included is a small box of maybe 75 unsorted crystals. I don't want to sell any crystals one by one. Please don't e-mail me asking if I have a crystal for XXX frequency. Those e-mails will be deleted--sorry. Thanks for looking. 73, Don M. __ 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. __ This email was pre-scanned by Spam Guardian A Service Provided by http://www.foothill.net __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] UTC CG-302
Keep in mind, thats a CG (Commercial Grade) and the specs are for 24 hours a day, 365 days a year, plus some reserve... Brett N2DTS - Original Message - From: Barrie Smith [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Tuesday, December 04, 2007 5:30 PM Subject: [AMRadio] UTC CG-302 Still digging through the junk and came upon an unidentified transformer, excepting that it has a tag that says: CG-302 Anyone know what it is? 73, Barrie, W7ALW __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] Building
I read all of Sevicks articles in CQ as well as throwing money away for his book which was filled with errors. I understand corrections have been issued in a later edition. Working in a RF lab at that time I tested many of those designs and can only surmise that they were built for photos and to fill up article word count and not actually tested in a lab enviroment. It is possible to cover 1.8-30MHz with a reasonably flat response but not in a single step with anything over a 4:1 step up. The 4X1's were driven thru 25 Ohm Globars at each grid which were figured into the load. Those and Globar based parasitic suppressors at each plate resulted in complete stability. Awhile after the amp was picked up the owner upgraded to a TS-930 if I remember and reported no input VSWR problems at any point in the grid swing. I think I will give some 813's and 814's some Class C testing with swamped grid. OK on Radiokit. That was fun while it lasted but it pretty much died with all the nocoders and CBers that were swarming in at the time. I just got tired of dealing with people that didnt know which end of a soldering iron to grab. I held on to a lot of the inventory for my own use and went back to a real engineering lab job until I recently retired. Carl KM1H - Original Message - From: [EMAIL PROTECTED] To: Discussion of AM Radio in the Amateur Service amradio@mailman.qth.net Sent: Tuesday, December 04, 2007 4:55 PM Subject: Re: [AMRadio] Building - Original Message - Subject: [AMRadio] Building Date: Tue, December 4, 2007 13:53 From: jeremy-ca [EMAIL PROTECTED] Ive been wondering, besides the drive requirement, why swamped grid cant be used in Class C? It would eliminate the neutralization requirement with some tubes as well as the hassle of a bandswitching input. I was attracted to this design in the original incarnation of the RF deck for my PDM transmitter - at the time it was a class C final using a single 4-400. To get enough grid drive I was trying to use (IIRC) a 16:1 Guanella transformer design out of Jerry Sevick's book, for a 4X voltage step-up from a 50 ohm source. Worked acceptably except at the edges of the intended frequency coverage (160M 10M), where the VSWR was out-to-lunch, even into a purely resistive load. Also, as I recall, 15M was sort of marginal. Once the parasitic reactance of the grid circuit was added, of coarse, things got even worse. I'm not saying it can't be done, but I couldn't get it to do what I wanted with a reasonable amount of effort expended. So I went to a variable T-network input and swamped the grid with about 3000 ohms non-X (in fact I bought the resistors from Radiokit!). More knobs to twiddle, but worked much better for me. Same input circuitry is in place now with a pair of 7527A's. 73, -Larry/NE1S __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
[AMRadio] CRYSTALS FOR GLOBE KING 500C
ANYONE KNOW WHAT SIZE OR KIND OF CRYSTAL IT TAKE. TX IN ADVANCE AND 73'S KARIM (K6KAI) __ 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] OT: Need minor parts for my spectrum analyzer
I realize this isn't directly Glowbug or AM related (it can do analysis of AM signals, and it has a CRT that glows! smile), but I'm looking for a pesky part for my analyzer system. I have the HP 140T mainframe, 8443 tracking generator, and 8445B automatic preselector here, and the interconnecting cables (those cables are a major pain in the butt to find!). NONE of them have the snap-on plastic feet, or rack mounting ears. I can live without the ears, but the feet are necessary to nest and make the system mechanically stable when the three units are stacked on the workbench. Does anyone have some spare HP equipment feet that they don't need? Write me off the list [EMAIL PROTECTED] Thanks in advance, Mr. T., W9LBB __ 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.
