Re: [AMRadio] one more
Jim Candela wrote: Mark, These are too cool! Maybe that big arc is from the keying relay at Geoff's place, W5OMR, on the mighty Titanic! hey, yo - wait! I don't make that kinda arc with just a couple of hunnert watts! It was just yesterday I experienced a deafening arc while running up the energy on an old Eaton 8200P ion implanter. A metal door was open filling the high voltage gap, and she let loose with a series of gun shots at 185,000 volts DC! That temporarily killed the HVAC system control, and the turbo pumps all spun down in protest, as did the cryo pumps take a big gulp of air. Contactors were a chattering, computers resetting, etc. I had to kill it with the big red EPO button. Nothing died! Today was better, and she's stable at 250 kv, and was running a 370 Kev double charge state phosphorous ion beam when I was leaving. They -pay- you to do that? you back home? Gonna make the Orange Hamfest, this weekend? -Geoff/W5OMR
Re: [AMRadio] one more
The Question is, will the articulate W5OMR be there. 444.700 107.2 Beaumont - Original Message - From: W5OMR/Geoff [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Thursday, February 23, 2006 12:36 AM Subject: Re: [AMRadio] one more Jim Candela wrote: Mark, These are too cool! Maybe that big arc is from the keying relay at Geoff's place, W5OMR, on the mighty Titanic! hey, yo - wait! I don't make that kinda arc with just a couple of hunnert watts! It was just yesterday I experienced a deafening arc while running up the energy on an old Eaton 8200P ion implanter. A metal door was open filling the high voltage gap, and she let loose with a series of gun shots at 185,000 volts DC! That temporarily killed the HVAC system control, and the turbo pumps all spun down in protest, as did the cryo pumps take a big gulp of air. Contactors were a chattering, computers resetting, etc. I had to kill it with the big red EPO button. Nothing died! Today was better, and she's stable at 250 kv, and was running a 370 Kev double charge state phosphorous ion beam when I was leaving. They -pay- you to do that? you back home? Gonna make the Orange Hamfest, this weekend? -Geoff/W5OMR __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
[AMRadio] League Bandwidth petition - final tally
As I've done on a variety of reflectors, I want to drop a note on here to thank those on the AM Reflector who took the time to send Comments for inclusion in the FCC database. As a result, the response to the League scheme to abandon mode-based HF coordination can clearly be called overwhelmingly negative. Several people making a tally found those opposed anywhere between 6:1 to 8:1, depending on how one interprets postings that saw a shred of hope. The League's Reply Comment to these concerns is at this link: (700K file size, Adobe PDF file type) http://www.wa3vjb.com/pics/LeagueReplyComments.pdf What's next? The FCC will take and consider the Comments and eventually issue either a Report and Order rejecting the petition, or a Notice of Proposed Rulemaking that may take suggestions from Commenters and try to salvage accomplishing the stated goals. Don't look for action anytime before the end of the year, according an FCC official who is in a position to know. Paul/VJB __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
RE: [AMRadio] League Bandwidth petition - final tally
Paul, we need to work through this there is some dangerous language in the ARRL's comments Brad KB7FQR -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of VJB Sent: Thursday, February 23, 2006 5:09 AM To: amradio@mailman.qth.net Subject: [AMRadio] League Bandwidth petition - final tally As I've done on a variety of reflectors, I want to drop a note on here to thank those on the AM Reflector who took the time to send Comments for inclusion in the FCC database. As a result, the response to the League scheme to abandon mode-based HF coordination can clearly be called overwhelmingly negative. Several people making a tally found those opposed anywhere between 6:1 to 8:1, depending on how one interprets postings that saw a shred of hope. The League's Reply Comment to these concerns is at this link: (700K file size, Adobe PDF file type) http://www.wa3vjb.com/pics/LeagueReplyComments.pdf What's next? The FCC will take and consider the Comments and eventually issue either a Report and Order rejecting the petition, or a Notice of Proposed Rulemaking that may take suggestions from Commenters and try to salvage accomplishing the stated goals. Don't look for action anytime before the end of the year, according an FCC official who is in a position to know. Paul/VJB __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: RE: [AMRadio] League Bandwidth petition - final tally
I agree with Brad. As an officer of a public company I have many dealings with the SEC and have learned to spot and understand Gov-Speak in documents. What I read in that document was essentially an ominous set of pre suppositions and condesending characturizations along with some nice doggie head stroking. I do not like the tone or content of the document nor do I see anything positive about it. The length of time it takes to make major policy decisions is based in a historical psychological Government mentality that the policy will be changed but it takes two years for the public to accept it and go through the process of implementation. I think Brad and others who view this document with suspiction are well informed and highly sensitive as to how the Government really works in regulatory issues. Thanks for the bandwidth Ron Weaver - W6OM Web Site: www.qsl.net/w6om
RE: RE: [AMRadio] League Bandwidth petition - final tally
Ron, thanks for the input, this is what i mean, T -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Thursday, February 23, 2006 7:04 AM To: Discussion of AM Radio Subject: Re: RE: [AMRadio] League Bandwidth petition - final tally I agree with Brad. As an officer of a public company I have many dealings with the SEC and have learned to spot and understand Gov-Speak in documents. What I read in that document was essentially an ominous set of pre suppositions and condesending characturizations along with some nice doggie head stroking. I do not like the tone or content of the document nor do I see anything positive about it. The length of time it takes to make major policy decisions is based in a historical psychological Government mentality that the policy will be changed but it takes two years for the public to accept it and go through the process of implementation. I think Brad and others who view this document with suspiction are well informed and highly sensitive as to how the Government really works in regulatory issues. Thanks for the bandwidth Ron Weaver - W6OM Web Site: www.qsl.net/w6om __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
RE: RE: [AMRadio] League Bandwidth petition - final tally
Ron, Thanks for the comments, the language is almost condescending, and they are tiring to shift what we are tiring to say, It seems the ARRL is turning more political everyday, My comment to the FCC about automatic control, seemed to have caught the ARRL by surprise, and they tried to explain around it. poorly. Automatic control if allowed in the phone bands, WILL CAUSE HARMFUL INTERFERENCE. The automatic modes and digital modes need to have a place, BUT ONE CANNOT EXPECT THEM TO SHARE HARMLESSLY IN THE PHONE BANDS. This will be the case when Winlink and other for profit equipment makers are in the picture. I am disappointed with the ARRL not looking at the big picture and not being more creative, they are a claiming to be the VOICE OF THE AMATEUR RADIO COMMUNITY, LOOKING OUT FOR ALL OF US. ARRL PLEASE BE MORE CREATIVE IN GUARDING OUR RIGHTS AS RADIO OPERATORS. Thanks Brad KB7FQR -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Thursday, February 23, 2006 7:04 AM To: Discussion of AM Radio Subject: Re: RE: [AMRadio] League Bandwidth petition - final tally I agree with Brad. As an officer of a public company I have many dealings with the SEC and have learned to spot and understand Gov-Speak in documents. What I read in that document was essentially an ominous set of pre suppositions and condesending characturizations along with some nice doggie head stroking. I do not like the tone or content of the document nor do I see anything positive about it. The length of time it takes to make major policy decisions is based in a historical psychological Government mentality that the policy will be changed but it takes two years for the public to accept it and go through the process of implementation. I think Brad and others who view this document with suspiction are well informed and highly sensitive as to how the Government really works in regulatory issues. Thanks for the bandwidth Ron Weaver - W6OM Web Site: www.qsl.net/w6om __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: RE: [AMRadio] League Bandwidth petition - final tally
I especially like the part that says: The response illustrates that ARRL's extensive publicity surrounding its proposal since the concept was first developed in 2002 was successful. ARRL has repeatedly both ARRL members and non-members of the concept emission mode. It has repeatedly asked members *and non-members* (italics in their document) for input about it, and has received extensive feedback, which was utilized in development of the final plan. Hmmm.really? I don't personally know of anyone, member or not, who received or was asked anything about this. Furthermore, if one follows the comments on their 'concept', it's pretty clear that the vast majority of those responding did not agree, including members. Where, exactly, is this utilized in development of the final plan? And that's in just the first paragraph of their reply. They waste no time in getting back to piling it deep, all the while ignoring reality, at the very least. Unfortunately, they do make good use of those who seemingly support the status quo. This plays right into their hands by making their case for progress and advancement, instead of remaining stagnant. I'm not saying ham radio is stagnant, just that I can see them lining up their little League ducks in a row. Paul, will the group involved with RM-11305 be filing a reply as well? It would be nice if some of the issues raised by those who objected could be addressed, bringing the proposal in line with any appropriate treaties, laws, promises, or whatever else. To be honest, I was more surprised at those against this concept than the opposition to the League's idea. It's amazing how many people seem to want the false security of having their special niche protected at the expense of all. Besides, if the ARRL really believes what it says at the end of paragraph 6 about voluntary cooperation, there should be no problem. (o: In a time when so many claim to object to special treatment of the minorities over the majority, you'd think it would be different. As Phil clearly pointed out, many still seem to prefer a back-of-the-bus mentality for American hams while the vast majority of the world enjoys true freedom and liberty in their spectrum usage (IARU and applicable rulings excepted). BTW, I think it's time to stop referring to AM or any mode we hope to keep as a 'legacy' mode. It sounds too much like 'special exception', like the 9 khz deal. AM is a standard voice mode and shouldn't be made into something that can be represented being a special interest mode only. By their own remarks, the ARRL is only too accepting of this idea. Wonder why? de Todd/'Boomer' KA1KAQ
RE: RE: [AMRadio] League Bandwidth petition - final tally
Thanks Brad I agree, the document is very condesending and clealy written to set the stage for a change without inciting another barrage of comments. The comment about how the ARRL has found a middle ground is an insult to anyone with a valid Amatuer Radio License and can think for themselves. I will ask my counsel what is necessary to file an injunction to stop the process and have it sent back to an independent organization for further study. All the Best Ron Weaver - W6OM Web Site: www.qsl.net/w6om
RE: RE: [AMRadio] League Bandwidth petition - final tally
Ron, I have experience in politics and running companies, would like to chat with you about legal action, sometimes its the only way. or maybe their are other ways if the ARRL would listen to us and modify there position. Brad KB7FQR -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Thursday, February 23, 2006 9:44 AM To: Discussion of AM Radio; Discussion of AM Radio Cc: Mike DORROUGH Subject: RE: RE: [AMRadio] League Bandwidth petition - final tally Thanks Brad I agree, the document is very condesending and clealy written to set the stage for a change without inciting another barrage of comments. The comment about how the ARRL has found a middle ground is an insult to anyone with a valid Amatuer Radio License and can think for themselves. I will ask my counsel what is necessary to file an injunction to stop the process and have it sent back to an independent organization for further study. All the Best Ron Weaver - W6OM Web Site: www.qsl.net/w6om __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
[AMRadio] Japanese Export of gear
I received this from a friend, in California today. curious if any on the reflector know or were aware of this. Collins gear may get very reasonable quickly! This may be interesting for anyone who collects old gear. could see a lot of it showing up for export in the near future, This may have an affect on the Japanese out of buying up the used Collins gear like they have been doing for the past several years Engadget is reporting that after April 1st (no this is not an April fools joke) the sale of old electronics in Japan could become much harder. From the article: It seems that Japan's government revised its Electrical Appliance and Material Safety Law back in April 2001, and added a stipulation that items authorized under the country's old law (the Electrical Appliance and Material Control Law) couldn't be sold anymore, but granted those products a five-year grace period. Well, if you check your convenient wall calendar, you'll see that the five-year period is about to end, which means that as of April 1, pretty much any electronic gear sold before April 1, 2001 can't be legally resold in Japan. The article also mentions that sellers can continue to sell old gear providing they get certification that the items conform to modern safety standards. http://www.engadget.com/2006/02/22/japan-bans-old-electronics-as-of-april-1/
[AMRadio] Re: 1930's Old Buzzard Open Rack Transmitter Finally Sees theAirwaves! (Long)
Thanks for the kudos, John! Could you or done describe the protective bias circuit you refer to? Probably could figure it out, but the group may be interested as well... 73, -Larry/NE1S John E. Coleman (ARS WA5BXO) writes: CONGRADULATIONS A JOB WELL DONE! I really like the choice of tubes. I don't know what a T55 is but probably one of the special Taylor triodes with 55 watts plate dissipation. Probably not a lot different than the 812s but I know that the 812s are very good tubes to use in a class C plate modulated rig especially if used with 100% grid leak bias or the configuration that Don, K4KYV, uses where there is a safety bias supplied thru a diode and the diode becomes reversed biased when RF drive causes grid leak bias. The 100% Grid leak bias DOES make a difference in the modulation characteristics of the rig. John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of ne1s Sent: Tuesday, February 21, 2006 2:27 PM To: AM Radio Reflector; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: [AMRadio] 1930's Old Buzzard Open Rack Transmitter Finally Sees theAirwaves! (Long) __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
[AMRadio] Millen 90902 info needed, please.
Hey y'all -- I've just acquired a nice looking Millen 90902 2 monitor scope. It needs recapping, however. One of the caps is an oil filled device that's leaked its contents. I think it's a good candidate for replacement :-) The problem is, I can't read its value (the label's destroyed) and I don't have a schematic for this scope. Does anyone know what this cap is...or what might be a decent substitute. It needs a 1 KV rating. Many thanks and 73, Craig W3CRR
Re: [AMRadio] 1930's Old Buzzard Open Rack TransmitterFinallySeestheAirwaves! (Long)
811/812 CCS phone dis is 27 watts with 82 watts output. 811/812 ICAS phone dis is 40 watts, with 120 watts output 811A/812A CCS Phone dis is 30 watts, with 85 watts output 811A/812A ICAS Phone dis is 45 watts, with 130 watts output. Per RCA Transmitting tube manuals..Sadly, page 21 is missing from my Taylor Catalog. Taylor did not use ICAS Ratings to my knowledge. RCA introduced those with the 1941 Tube Guides.. The 1939 ARRL handbook, page 80 shows the phone ratings for the T-55 as 1500 volts and 150 plate mills.Peak power output of 652 watts and a carrier power of 168 watts..With the input of 225 watts and a output of 168 watts, then the CCS Phone dissapation would have been 57 watts. Mike From: Brett gazdzinski [EMAIL PROTECTED] To: 'Discussion of AM Radio' amradio@mailman.qth.net Sent: Tuesday, February 21, 2006 10:44 PM Subject: RE: [AMRadio] 1930's Old Buzzard Open Rack TransmitterFinallySeestheAirwaves! (Long) The T55 has 55 watts of plate dis, and gives 170 watts out? The 812A has 65 watts of plate dis and gives 130 to 150 watts out?
Re: [AMRadio] 1930's Old Buzzard Open Rack TransmitterFinallySeestheAirwaves! (Long)
811/812 CCS phone dis is 27 watts with 82 watts output. 811/812 ICAS phone dis is 40 watts, with 120 watts output 811A/812A CCS Phone dis is 30 watts, with 85 watts output 811A/812A ICAS Phone dis is 45 watts, with 130 watts output. Per RCA Transmitting tube manuals..Sadly, page 21 is missing from my Taylor Catalog. Taylor did not use ICAS Ratings to my knowledge. RCA introduced those with the 1941 Tube Guides.. The 1939 ARRL handbook, page 80 shows the phone ratings for the T-55 as 1500 volts and 150 plate mills.Peak power output of 652 watts and a carrier power of 168 watts..With the input of 225 watts and a output of 168 watts, then the CCS Phone dissapation would have been 57 watts. Mike From: Brett gazdzinski [EMAIL PROTECTED] To: 'Discussion of AM Radio' amradio@mailman.qth.net Sent: Tuesday, February 21, 2006 10:44 PM Subject: RE: [AMRadio] 1930's Old Buzzard Open Rack TransmitterFinallySeestheAirwaves! (Long) The T55 has 55 watts of plate dis, and gives 170 watts out? The 812A has 65 watts of plate dis and gives 130 to 150 watts out?
[AMRadio] Re: 1930's Old Buzzard Open Rack Transmitter Finally Sees theAirwaves! (Long)
Sorry!!! That was supposed to read Could you or DON describe the protective bias circuit you refer to? -'1S ne1s writes: Thanks for the kudos, John! Could you or done describe the protective bias circuit you refer to? Probably could figure it out, but the group may be interested as well... 73, -Larry/NE1S John E. Coleman (ARS WA5BXO) writes: CONGRADULATIONS A JOB WELL DONE! I really like the choice of tubes. I don't know what a T55 is but probably one of the special Taylor triodes with 55 watts plate dissipation. Probably not a lot different than the 812s but I know that the 812s are very good tubes to use in a class C plate modulated rig especially if used with 100% grid leak bias or the configuration that Don, K4KYV, uses where there is a safety bias supplied thru a diode and the diode becomes reversed biased when RF drive causes grid leak bias. The 100% Grid leak bias DOES make a difference in the modulation characteristics of the rig. John, WA5BXO
RE: RE: [AMRadio] League Bandwidth petition - final tally
On 23 Feb 2006 at 9:47, UVCM INC wrote: Ron, I have experience in politics and running companies, would like to chat with you about legal action, sometimes its the only way. or maybe their are other ways if the ARRL would listen to us and modify there position. Brad KB7FQR Brad don't hold your breath to see THAT happen... The ARRL Directors and top brass have demonstrated an incredible level of intransigence, and treachery against the clearly communicated will of the majority of radio amateurs. They have dug in to this amazingly stupid position for some time now. I don't expect them to change one bit. The fact of the matter is that ARRL is broken! We need something else with some integrity to replace ARRL, or at least to become a viable alternative until such time as we amateurs who still love and value the hobby can see this obsolete, self-perpetuating old boys' club deposed. I know many are still holding out hope that the League can be reformed. All I see is that it gets worse and worse all the time.
Re: RE: [AMRadio] League Bandwidth petition - final tally
I just downloaded it at work today and got through the first page or so. even then I was stunned at what the comments said. If I recollect correctly, the ARRL states that the excellant turnout of comments shows how well the ARRL publicized their comments, and that the excellant turnout of comments shows there is no apathy in the ham community! You gotta be kidding me!! 900 comments / 150,000 ARRL members is a GOOD turnout of a) ARRL members and/or b) the entire ham community? They're trying to blow smoke up the FCC's a, well, you get the idea 73 Mark K3MSB
Re: [AMRadio] League Bandwidth petition - final tally
Brian Carling wrote: On 23 Feb 2006 at 9:47, UVCM INC wrote: Ron, I have experience in politics and running companies, would like to chat with you about legal action, sometimes its the only way. or maybe their are other ways if the ARRL would listen to us and modify there position. Brad KB7FQR Brad don't hold your breath to see THAT happen... The ARRL Directors and top brass have demonstrated an incredible level of intransigence, and treachery against the clearly communicated will of the majority of radio amateurs. They have dug in to this amazingly stupid position for some time now. I don't expect them to change one bit. The fact of the matter is that ARRL is broken! We need something else with some integrity to replace ARRL, or at least to become a viable alternative until such time as we amateurs who still love and value the hobby can see this obsolete, self-perpetuating old boys' club deposed. I know many are still holding out hope that the League can be reformed. All I see is that it gets worse and worse all the time. __ AMR Absolutely correct. I strongly object to them dubbing themselves The National Organization for Amateur Radio. The membership is a small percentage of Amateur Radio, and the3y represent only a small percentage of that.( Mainly Winlink users). -- _ _ _ _ _ / \ / \ / \ / \ / \ John L. Sielke ( W ) ( 2 ) ( A ) ( G ) ( N ) http://w2agn.net \_/ \_/ \_/ \_/ \_/ CRUSTY OLD CURMUDGEON - AND PROUD OF IT!
[AMRadio] The fate of RM-11305 (Brand X)
It's interesting to see a groundswell of reaction to how and what the League has concluded about Comments filed regarding its Petition. There may soon be an extension of the public comment window to accomodate folks like yourself who wish to weigh in. Now, regarding the other Petition in this proceeding, RM-11305, cooked up by a seven-member Communications Think Tank... --- Todd had asked -- Paul, will the group involved with RM-11305 be filing a reply as well? It would be nice if some of the issues raised by those who objected could be addressed, bringing the proposal in line with any appropriate treaties, laws, promises, or whatever else. Yes. Several of us, including myself, filed individual Reply Comments offering a compromise that would essentially take the more relaxed segments seen in the IARU Region 2 Band Plan which was approved in 1998. It would be short of allowing any vacant frequencies to be free for all to use. Happily this plan also already provides for slots called digimode that could serve as incubation zones for new digital schemes. It baffles me why the group in Newington didn't think of this, since the ARRL is the member society in the IARU representing the U.S. They endorsed the plan ! Paul/VJB __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
RE: [AMRadio] Re: 1930's Old Buzzard Open Rack Transmitter Finally SeestheAirwaves! (Long)
The grid gets its bias the normal grid leak way. At the grid side of the resistor, a diode is installed between the bias supply and the grid, in the direction that allows it to pass bias, but if the grid leak exceeds the fixed bias, it is reverse biased. That's cathode towards the bias supply I think. I like using big panel mount pots for grid leak, I have some BIG ones I got at fests for a buck each, 75 watt jobs of different resistances. Brett N2DTS -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of ne1s Sent: Thursday, February 23, 2006 4:42 PM To: Discussion of AM Radio Subject: [AMRadio] Re: 1930's Old Buzzard Open Rack Transmitter Finally SeestheAirwaves! (Long) Sorry!!! That was supposed to read Could you or DON describe the protective bias circuit you refer to? -'1S ne1s writes: Thanks for the kudos, John! Could you or done describe the protective bias circuit you refer to? Probably could figure it out, but the group may be interested as well... 73, -Larry/NE1S John E. Coleman (ARS WA5BXO) writes: CONGRADULATIONS A JOB WELL DONE! I really like the choice of tubes. I don't know what a T55 is but probably one of the special Taylor triodes with 55 watts plate dissipation. Probably not a lot different than the 812s but I know that the 812s are very good tubes to use in a class C plate modulated rig especially if used with 100% grid leak bias or the configuration that Don, K4KYV, uses where there is a safety bias supplied thru a diode and the diode becomes reversed biased when RF drive causes grid leak bias. The 100% Grid leak bias DOES make a difference in the modulation characteristics of the rig. John, WA5BXO __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
RE: [AMRadio] Millen 90902 info needed, please.
Craig: You might find something useful on the James Millen Society webpage. Although they don't have a schematic for a 2 scope, they do have schematics for the 3 scope (90903) and the circuit may be similar such that you could identify the value of the cap - good luck. http://www.isquare.com/millen/millen-page.htm Dennis WD5JWY -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Craig Roberts Sent: Thursday, February 23, 2006 2:55 PM To: Discussion of AM Radio Subject: [AMRadio] Millen 90902 info needed, please. Hey y'all -- I've just acquired a nice looking Millen 90902 2 monitor scope. It needs recapping, however. One of the caps is an oil filled device that's leaked its contents. I think it's a good candidate for replacement :-) The problem is, I can't read its value (the label's destroyed) and I don't have a schematic for this scope. Does anyone know what this cap is...or what might be a decent substitute. It needs a 1 KV rating. Many thanks and 73, Craig W3CRR __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
RE: [AMRadio] Millen 90902 info needed, please.
Craig: I have a 2-inch monitor scope that was built from a schematic that appeared in the 1950 ARRL Handbook, page 490. You might be able compare your circuit against that schematic and get a ballpark value for the capacitor you seeking information on. 73, Bob, K2GLO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dennis Pharr Sent: Thursday, February 23, 2006 5:04 PM To: 'Discussion of AM Radio' Subject: RE: [AMRadio] Millen 90902 info needed, please. Craig: You might find something useful on the James Millen Society webpage. Although they don't have a schematic for a 2 scope, they do have schematics for the 3 scope (90903) and the circuit may be similar such that you could identify the value of the cap - good luck. http://www.isquare.com/millen/millen-page.htm Dennis WD5JWY -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Craig Roberts Sent: Thursday, February 23, 2006 2:55 PM To: Discussion of AM Radio Subject: [AMRadio] Millen 90902 info needed, please. Hey y'all -- I've just acquired a nice looking Millen 90902 2 monitor scope. It needs recapping, however. One of the caps is an oil filled device that's leaked its contents. I think it's a good candidate for replacement :-) The problem is, I can't read its value (the label's destroyed) and I don't have a schematic for this scope. Does anyone know what this cap is...or what might be a decent substitute. It needs a 1 KV rating. Many thanks and 73, Craig W3CRR __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
[AMRadio] FS: HE80 / KT340 Lafayette
Lafayette fans: Guys - I am open to trades or offers on this beautiful KT340, the same as an HE80 only kit built. This one is excellent in every way. This is as nice a Lafayette receiver as you will ever see. Excellent in every way. Covers 550 kHz to 30 MHz in several bands including a logging scale and bandspread tuning. Receives AM, CW and SSB. Has 455 kHz i.f. Has many extra nice features, including Q Multiplier, RF and AF Gain controls. Also has controls for BFO, selectivity, S-meter etc. etc. Smooth sounding tube audio. It was recently in regular use. It is complete, original and unmodified. All the original knobs etc. Good working condition. Available for $235.00 plus shipping or best offer. Picture and details at: http://www.af4k.com/radios.htm
