Re: [AMRadio] Antennas

it otherwise would be. I am not sure, in the case where neutralization is perfect, if HiQ tuning would cause phasing products with modulation near the slope of the tuning curve or not. It seems to me that it would, but the attenuation of the slope may cover that up. John -Original Message

[AMRadio] DX-60 plate modulator

polypedance output transformer, a UTC S2 driver transformer, and three 12AU7s, one is mike preamp, one is driver and one is used as cathode follower drivers for the 807 grids. Its a nice compact assembly. 73 John K5PRO New Mexico Date: Wed, 9 Jun 2010 08:03:21 -0700 (PDT) From: Brian

Re: [AMRadio] Request for Most Common Capacitor Values to be Reproduced

+/- 20% Modern material will make the capacitors smaller than original so I would suggest to go with only 600V .001 .0022 .0039 .005 .01 .022 .039 .05 or .047 .1 .15 .22 -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Todd,

Re: [AMRadio] The Art of Ragchewing

Great effort, John. I have enjoyed our QSO's and look forward to more in the future. Lately, I have been striving for brevity and conciseness, as there are more AM enthusiasts joining the fray. Thanks for tabling the subject. 73 de John, K5SEE -Original Message- From: johndt

Re: [AMRadio] Ham Radio Growing in the Age of Twitter

--... ...-- John, WAØSTX/4 From: collinsra...@comcast.net To: amradio@mailman.qth.net CC: amradio-requ...@mailman.qth.net Date: Wed, 7 Apr 2010 06:43:39 -0400 Subject: Re: [AMRadio] Ham Radio Growing in the Age of Twitter I am conducting a survey that has only three simple

Re: [AMRadio] FCC Non-cooperation

a little bit of Political or Religious wisdom tacked onto the end of the message and wonder if he or she took their medication today. I get enough Politics watching the evening news and living here in the bible belt way to much religion in my day to day interaction with my neighbors. 73, John

[AMRadio] Hammond Transformer ID

of combinations with 12 terminals. John K5PRO Message: 7 Date: Tue, 16 Feb 2010 03:22:28 -0800 (PST) From: Jack Griffin jtg4...@yahoo.com Subject: [AMRadio] Hammond Transformer specs. 2350 To: amradio@mailman.qth.net Message-ID: 31255.36615...@web58701.mail.re1.yahoo.com Content-Type: text/plain

[AMRadio] 250TH tube

Who was looking for the new 250TH tube to trade for? Thanks and 73, John, K5PGW __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules

Re: [AMRadio] sdr-iq

may have a listening level control. Just a suggestion on something to check. John, WA5BXO -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Bernie Doran Sent: Wednesday, February 10, 2010 12:03 PM To: Discussion of AM

Re: [AMRadio] Comment from N0JEF

'place' in a round-table... u, u, wel I fergit who I was s'posed t' send it too, sooo, ummm whoever that was, it's yer turn OM mumble grumble mutter... Cheers John KB6SCO __ Our Main Website: http

Re: [AMRadio] Email #2 test

At 09:29 AM 1/24/2010, you wrote: Ah ha, I see where I did not have compose messages in plain text, so let's see if that fixed that. . . . C again Both came through OK here. 73, John __ Our Main Website: http://www.amfone.net

[AMRadio] Digitizing old records

. A Canadian company called Goldwave - free trial 40 dollar purchase probably the best bet. I used it before I got Audition. Audacity - Free - I don't know about its EQ and other feature capabilities This is all not recommended on a computer that has glitches or is slow. Good Luck John

Re: [AMRadio] frequency sweeper

. 73, John -Original Message- From: Bernie Doran qedconsulta...@embarqmail.com To: Discussion of AM Radio in the Amateur Service amradio@mailman.qth.net Sent: Thu, Jan 21, 2010 8:11 am Subject: [AMRadio] frequency sweeper I acquired a SDR radio and have been playing with it for about

Re: [AMRadio] OT : Paid Hams during Drills

grade, that you participate. The ARRL info, on that page, is very vague on this (as usual) as there does not seem to be any other info about it on the web page, or did I just not see it among all the BS. John, WA5BXO -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio

Re: [AMRadio] OT : Paid Hams during Drills

regulation is even necessary. Where is the law they might or I have been in the past breaking? Still undecided John __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com

[AMRadio] Electromagnetic allergies

instead of the 'city different'. Touche! 73 John K5PRO __ 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

[AMRadio] Santa Fe-The City Different

there are in arms again about cattle mutilations. Here come the black helicopters at night ... Art Bell stuff. You gotta wonder what kind of education Mr. Firstenberg got in the first place? Obviously not disciplined in the sciences. Sleeping in his car to avoid EMI 73 John K5PRO Santa Fe county

[AMRadio] 6146 modulators

good for that rig. Of course, as someone mentioned, the Valiant had a pair. 73 John K5PRO __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules

Re: [AMRadio] Threads that go on and on

and acceptable position and is it that everyone else is wrong?? 73, John, K5PGW - Original Message From: Ron.K3PID ron.k3...@sbcglobal.net To: amradio@mailman.qth.net Sent: Sat, December 19, 2009 3:49:26 PM Subject: Re: [AMRadio] Threads that go on and on Maybe I'm missing something here

Re: [AMRadio] Threads that go on and on

will not do the right thing. I say, be considerate of your fellow Amateurs and use the reflector for their benefit and yours and not to IMPRESS others for your gratification and we will have a GREAT AM reflector. Self Control and respect will do the job. 73, John, K5PGW - Original Message

[AMRadio] Threads that go on and on

don't respect their fellow Hams. 73, John, K5PGW __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net

Re: [AMRadio] HRO question for the day

aspect. Even if no one can tell the difference, it helps me to understand. John, WA5BXO __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules

Re: [AMRadio] Relay Rating (JAMES HANLON)

HI Jack, 24 or 48 volts DC should do it. Used in telephone work, #1ESS and other systems. It is fast operating. Try 24 volts first. (I forget now.) 73, John At 05:48 AM 12/17/2009, you wrote: Jim Hanlon, W8KGI Do you have the relay specs for a Western Electric 303J? It is an octal and may

Re: [AMRadio] HRO question for the day

be the disadvantage of using small signal solid state diodes as long as the IF frequency isn't too high. John __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net

[AMRadio] Relay rating

Will 10 amp rated contacts on a relay handle 300 watts of carrier from an AM transmitter? Your opinion based upon your experience will be appreciated. Thanks and 73, John, K5PGW __ Our Main Website: http://www.amfone.net

[AMRadio] Paint question

will be appreciated. 73, John, K5PGW __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http

Re: [AMRadio] Paint question

John There is an early bandmaster on ebay right now that has adifferent color and finish than the later ones. If it is originol which it appears to be yours might have been similar? http://cgi.ebay.com/Harvey-Wells-ham-radio-transmitter-museum

Re: [AMRadio] deliberate encroachment

Just curious what type Military Net would be in the Ham Bands? 73, John, K5PGW - Original Message From: Bernie Doran qedconsulta...@embarqmail.com To: Discussion of AM Radio in the Amateur Service amradio@mailman.qth.net Sent: Sat, December 5, 2009 5:41:48 AM Subject: [AMRadio

Re: [AMRadio] Muting the R390 on transmit

your assistance and advice. 73, John, K5PGW - Original Message From: Grant Youngman n...@tx.rr.com To: Discussion of AM Radio in the Amateur Service amradio@mailman.qth.net Sent: Tue, December 1, 2009 11:14:01 PM Subject: Re: [AMRadio] Muting the R390 on transmit Do you have the Break

Re: [AMRadio] Muting the R390 on transmit

to energize the relay by grounding terminal 9 and additionally, I observed slight arcing when I connected the grounded alligator clip to terminal 9. If the foregoing tells you anything, please feel free to direct me. Thanks again and 73, John, K5PGW From: Jerry K w...@hughes.net To: Discussion

Re: [AMRadio] Muting the R390 on transmit

I have the R 390, Bob. Thanks. John, K5PGW - Original Message From: rbethman rbeth...@comcast.net To: Discussion of AM Radio in the Amateur Service amradio@mailman.qth.net Sent: Wed, December 2, 2009 12:31:06 PM Subject: Re: [AMRadio] Muting the R390 on transmit The cited References

[AMRadio] Shucks!!!!!

SHUCKS, I just printed almost 60 pages of the manual for the wrong receiver. I have the Collins R 390, NOT the R 390A !! Now I have some schematic prints and partial manual for the R 390A. Back to SQUARE ONE!!! NOW WHUT??? It is terrible to be OLD but worse to be OLD AND DUMB!! 73, John

Re: [AMRadio] Shucks!!!!!

Don't worry about it John. If your old brain is like mine, you won't remember by morning. 73, John At 02:34 PM 12/2/2009, John King wrote: Back to SQUARE ONE!!! NOW WHUT??? It is terrible to be OLD but worse to be OLD AND DUMB!! 73, John, K5PGW

Re: [AMRadio] Muting the R390 on transmit

Thanks Larry. I have switched the break in to ON and had no mute. I have 12.95 vac at terminal 9 on the terminal board on the rear of the rcvr with the break in switch on and 1.68 vac at terminal 9 when the switch is off. 73, John, K5PGW - Original Message From: Larry Szendrei n

Re: [AMRadio] Muting the R390 on transmit

Thanks Bob, I will go there, 73, John, K5PGW - Original Message From: rbethman rbeth...@comcast.net To: Discussion of AM Radio in the Amateur Service amradio@mailman.qth.net Sent: Wed, December 2, 2009 2:20:36 PM Subject: Re: [AMRadio] Muting the R390 on transmit John, The manuals

Re: [AMRadio] Muting the R390 on transmit

Bob, I only see the R390A on the manual site. 73, John - Original Message From: John King k5...@yahoo.com To: Discussion of AM Radio in the Amateur Service amradio@mailman.qth.net Sent: Wed, December 2, 2009 2:22:11 PM Subject: Re: [AMRadio] Muting the R390 on transmit Thanks Bob, I

[AMRadio] Muting the R390 on transmit

Does anyone know the hookup for muting the R390 during transmit? Your input will be appreciated. Thanks and 73, John, K5PGW __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail

Re: [AMRadio] Muting the R390 on transmit

9 is grounded. What do you think, Grant? I do not have a manual or schematic for the R390. 73, John, K5PGW - Original Message From: Grant Youngman n...@tx.rr.com To: Discussion of AM Radio in the Amateur Service amradio@mailman.qth.net Sent: Tue, December 1, 2009 9:19:05 PM Subject: Re

Re: [AMRadio] IS BAMA WEBSITE NO MORE???

I think that they had a major problem and have been re building for qoite a while. I just used this link to download the Valiant construction manual. http://bama.edebris.com/manuals/ 73, John K6HSG - Original Message - From: Van K7VS wa7...@cdsnet.net To: Discussion of AM Radio

[AMRadio] Collins 618T system info wanted

this to one of those, please do - but direct replies to me personally. Cheers John KB6SCO Carson City __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio

[AMRadio] Reactance Calculator

Found this recently http://www.indianabiomedical.com/Calculator/XLCcalculator.html John __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules

Re: [AMRadio] I need som advice

That 290-262 looks like a nice deal Bob, I may have to get a couple for replacements in some stuff around here. John, WA5BXO -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Robert Nickels Sent: Monday, October 19, 2009 7:17

Re: [AMRadio] I need som advice

just buy a 10 watt 10 inch speaker any more or they seem to be hard to find anyway. 73, John, WA5BXO __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net

[AMRadio] for sale or not for sale here

I cannot remember if it was this mail list or another. I want to post some items for sale related to AM ham radio. Can i do it here? 73 john K5PRO __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http

Re: [AMRadio] Any amplifier suggestions?

Todd, Typically the linear amp will be the fewer parts and expense but with less output than a full plate modulated class C rig per a given tube. One of the simplest tetrode linear systems is to put a 50 ohm load resistor right on the grid of a big jug like a 4-1000 or a pair of 4-400s and use a

[AMRadio] CCA AM 1000D

Thats not a Continental Electronics product. CCA was a company that went defunct about 15 years ago. There are some AM1000D's converted to AM, request on the AM forum. John K5PRO rescued a continental am-1000d but have no documentation--can anyone help? want to put on 1885 thanks jim

Re: [AMRadio] Microphone recomendation

plugs in a microphone and a high pulse is placed on the input. I feel that all of these things can be overcome and good product resulting. I can see it now SS-AX7 by Matsumushisomma Maybe I'm behind and it is already here! John __ Our

Re: [AMRadio] Power Transformer as Mod Transformer (was: Seventy Fiver)

winding of the XFMR. I have found them to make very good regulators for RCVRs, VFO, etc. They will maintain the supply voltage constant to the VFO plate and heater even if the mains drop to 100V when a big rig is key to XMIT. This way you don't slide up the band while XMITing. John, WA5BXO

Re: [AMRadio] MCM Electronics digital multimeter for $2.99

Greetings Using the promo code 99RC1. I was just able to order three at the sale price. John Flood KB1FQG __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio

Re: [AMRadio] SX-28 Cabinet wrinkle finish - in progress...

. Darker black but pretty much the same texture. Not wrinkle by any means. I used a belt sander on one of the three panels and discovered that they are any thing but flat. I guess that the wrinkle and textured finishes of old were used to hid the blemishes. 73, John Kc0yai Soon to be back to k6hsg

[AMRadio] Diathermy tube for Fischer

plates than the Fischer tube you pictured, must be lower power. 73 John K5PRO Message: 1 Date: Thu, 10 Sep 2009 11:17:30 -0700 From: David Hollander n...@cox.net Subject: [AMRadio] Fischer Transmitting Tube I have a tube that I thought was an old Taylor tube. Marked on the glass is Fischer

Re: [AMRadio] Hallicrafters R-12 speaker

. http://www.parts-express.com/pe/showdetl.cfm?Partnumber=290-486 73, John -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Bob Peters Sent: Friday, September 04, 2009 6:02 PM To: 'Discussion of AM Radio in the Amateur Service

[AMRadio] Test

Please excuse and ignore - test new email provider __ 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!):

Re: [AMRadio] Hallicrafters R-12 speaker

Brian I buy most speakers from Parts Express. They have a lot of audio parts and equipment. (http://www.parts-express.com) Good Luck John, WA5BXO __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable

Re: [AMRadio] Hallicrafters R-12 speaker

who did the restoration of the SX 28A shown in the pictures in the link? Thanks and 73, John, K5PGW --- On Fri, 9/4/09, John Coleman j...@pctechref.com wrote: From: John Coleman j...@pctechref.com Subject: Re: [AMRadio] Hallicrafters R-12 speaker To: Discussion of AM Radio in the Amateur

Re: [AMRadio] Hallicrafters R-12 speaker

? Barbara and I will be there and I hope to meet you. We park on the side of the expo building in an Alfa See ya Coach. we will be there Thursday afternoon or Friday morning. 73, John, K5PGW --- On Fri, 9/4/09, WA5AM ars.w5...@gmail.com wrote: From: WA5AM ars.w5...@gmail.com Subject: Re

Re: [AMRadio] Hallicrafters R-12 speaker

I'm curious Brian, what is the one that you intend to get? John, WA5BXO -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of WA5AM Sent: Friday, September 04, 2009 4:42 PM To: Discussion of AM Radio in the Amateur Service Subject

[AMRadio] Hallicrafters PM 23

with him on that point. Does anyone have a silkscreen to re print the Green Hallicrafters printing on the face of the PM 23? Your assistance will be greatly appreciated and you may email me direct. Thanks and 73, John, K5PGW

[AMRadio] Correction of my post

CORRECTION... I have both the PM 23 and R42 that need refinishing. I got them mixed up and it is the R 42 that will need re-lettering on the front in the Hallicrafters green lettering. I noticed my error just before I received Bob Bethman's email . Thanks Bob. 73, John, K5PGW

Re: [AMRadio] Other Classic Rigs on Television

Glass Bottom Boat with Arthur Godfrey, who was a ham. 73, John Dilks, K2TQN At 05:38 PM 9/1/2009, you wrote: There is also an old Doris Day movie in which she is shown talking on an S line. I don't remember the name of it. __ Our Main

Re: [AMRadio] 100TH and 250TH advice and or comment

starter for heaters. I use them in the primary of the filament XFMRs. But for long periods of setting a variac might be best. 73 John -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of crawf...@surfmore.net Sent: Tuesday

Re: [AMRadio] 100TH and 250TH advice and or comment

once taking the grid connector off. That was a little heartbreak. Especially when Geoff W5OMR was te lling me to be careful. HIHI 73 John, WA5BXO -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of rbethman Sent: Tuesday

Re: [AMRadio] 100TH and 250TH advice and or comment

form output that matches the audio wave form, and it gets worse as the power demand goes up. 73 John -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of LEE BAHR Sent: Tuesday, August 25, 2009 2:20 PM To: Discussion of AM Radio

Re: [AMRadio] Classic Link Coupled Tuner

the losses of open wire line. John, WA5BXO __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List

Re: [AMRadio] Classic Link Coupled Tuner

. If it aint getin hot and it aint arcin then it's OK. There always a number of ways to do it. BTW: I was in your neck of the woods a couple of weeks ago visiting with Kids in Searcy and drove out to the Peti-Jean park. I guess we must have gone right by you place. 73 John, WA5BXO

Re: [AMRadio] Classic Link Coupled Tuner

to make the whole system resonate. This is often more easily done when you have a lot of capacitance to work with. So having a high Q tank in the tuner has its advantages. John, WA5BXO -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net

Re: [AMRadio] Viking I

I am curious as to just why they want a specific model, the Viking 1? Just curious. 73, John, K5PGW --- On Fri, 8/14/09, David McClafferty ve1...@yahoo.ca wrote: From: David McClafferty ve1...@yahoo.ca Subject: [AMRadio] Viking I To: amradio@mailman.qth.net Date: Friday, August 14, 2009, 5

Re: [AMRadio] Odd tuning on 160M

the interconnecting Coax cables would not be a bad idea either. Mike, the answer is, I JUST DON'T KNOW!! I am just thinking outloud and hoping I hit on an idea for you. Good luck and 73, John, K5PGW --- On Sat, 7/18/09, M. K. Hess mkh...@kias.org wrote: From: M. K. Hess mkh...@kias.org Subject

Re: [AMRadio] MJ comments

Thanks Brian! 73.. John WB5CW -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Bob Peters Sent: Wednesday, July 01, 2009 7:28 AM To: 'Discussion of AM Radio in the Amateur Service' Subject: Re: [AMRadio] MJ comments Thank you

[AMRadio] OT: Another BC transmitter saved

the rest of the signal chains, and 866s/8008s for making DC. We had to remove a door and half of the door jamb to get it out of the building Also cleaned out several 833s, a lot of leftover tape and cartridges, and 4 Collins turntables. Keep the Old Iron speaking! Cheers John

Re: [AMRadio] push pull output XFMRs and neg feedback

Hey Darrell; Some how I missed your post until just now but yes I did do the swap. John -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of WA5VGO Sent: Thursday, May 14, 2009 7:34 PM To: amradio@mailman.qth.net Subject

[AMRadio] Going to Memorial Day Hamfest Howard County Fair Grounds

pile of donation and another with free stuff. Look for a Blue Ford Freestyle with an open trailer about 8 am. 73, John Dilks, K2TQN __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail

Re: [AMRadio] push pull output XFMRs and neg feedback

ohm secondary -- rating 40 watts Maybe a pair of substitutes. I have a little extra room on the chassis if necessary. Contact me off list please -- wa5bxo at gmail dot com John Coleman, WA5BXO -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun

Re: [AMRadio] push pull output XFMRs and neg feedback

I have found two in my life that were shorted. No inductance: Ripple was the same on both ends. So either the others guys just never fixed the ripple in the picture or they never saw it. John Coleman, WA5BXO __ Our Main Website

Re: [AMRadio] BC-610 fiasco Again

it arrived in NJ.) Later, when I was building my new home and didn't have time or a place to store it, I gave it away to a local ham, who later sold it. Looking at it now, I wish I still had it. And NO, I don't intend to bid on it. 73, John Dilks, K2TQN At 12:28 AM 5/20/2009, James M. Walker wrote

Re: [AMRadio] Meter scale software

Maybe this is it. http://www.tonnesoftware.com/meterdownload.html Installation did not put and icon up, I had to go find the file meter.exe and run it. But it looks cool. John WA5BXO __ Our Main Website: http://www.amfone.net AMRadio

Re: [AMRadio] push pull output XFMRs and neg feedback

this sort of thing experimentally but I figure that someone with a degree may know the actual methods to calculate all of this. BTW the cathode resistor is 1000 ohms and the plate resistor is 47K. Thanks for the tip. John, WA5BXO __ Our

Re: [AMRadio] push pull output XFMRs and neg feedback

secondary -- rating 40 watts John Coleman, WA5BXO -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Jim Candela Sent: Friday, May 15, 2009 11:06 PM To: amradio@mailman.qth.net Subject: Re: [AMRadio] push pull output XFMRs and neg

Re: [AMRadio] push pull output XFMRs and neg feedback

and is probably in the XFMR. I fear they just aren't equal. But before I go to the trouble of swapping all the wires I am going to make phasing tests throughout the amplifier. It is only a few stages so it should not take long. But I can't get to it till next week. CU Later, 73 John, WA5BXO

[AMRadio] push pull output XFMRs and neg feedback

happened to find one that works OK but not the other. John Coleman, WA5BXO __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read

Re: [AMRadio] push pull output XFMRs and neg feedback

. Thanks for the input Dennis John Coleman, WA5BXO -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Dennis Gilliam Sent: Thursday, May 14, 2009 5:48 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] push

[AMRadio] Linear Operation for AM

there is a lot of tube heat dissipation that occurs. This is all OK if the amp is big enough but it can cause replacement of tubes to be necessary more often than most of us would prefer. John WA5BXO __ Our Main Website: http

Re: [AMRadio] HF homebrew 100 plus watt vacuum tube Transmitter

more spacing on everything. For higher voltages and fewer tubes the 812, 811, 805 and some others mention would be good. My favorite would be the push pull 812 class C final modulated by class B 811As running 1500 Volts or so. John WA5BXO -Original Message- From: amradio-boun

Re: [AMRadio] Filament choke

and there may be heating especially if the choke is a tightly wound thing on .25 in form. Good Luck John, WA5BXO -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of sbjohns...@aol.com Sent: Thursday, April 30, 2009 8:37 AM

[AMRadio] Seeking advice on wires in trees

of permanent support such as a pulley near the top. Would like to receive suggestions from folks that have done this and achieved relative permanence for antenna supports.? Thanks for your consideration. 73 de John, K5SEE When CW is no longer required, it will be a necessity. de K5SEE

Re: [AMRadio] Google

It's Samuel Morse's birthday John, WA5BXO -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of zilas...@la.twcbc.com Sent: Monday, April 27, 2009 10:46 AM To: Discussion of AM Radio in the Amateur Service; mkh...@kias.org

Re: [AMRadio] How to reply to someone else's post

Hi Brian... Just saying hello... -73- John WB5CW -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of WA5AM Sent: Thursday, April 23, 2009 1:55 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] How

[AMRadio] Frequencies in jeapordy?

I agree. Just get on and talk to as many as will respond. Our frequencies are still in jepordy. Allen KA1KIX Which frequencies are in jeapordy and how? I wasn't aware of this! John KX5JT -- It's News. It's

[AMRadio] Wanted: IF Module for Collins R390 receiver

I am looking for an IF Module for a Collins R390 receiver. If you have one, and will dispose of it, please contact me via email. Thanks and 73, John, K5PGW __ Our Main Website: http://www.amfone.net AMRadio mailing list

Re: [AMRadio] old BC AM FM or TV rigs

the old FM rig and used the parts. John, WA5BXO -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Jim WB5OXQ inb Waco, TX Sent: Saturday, April 04, 2009 11:32 AM To: Discussion of AM Radio in the Amateur Service Subject: [AMRadio

Re: [AMRadio] old BC AM FM or TV rigs

know is audio power is the same and the power in the sidebands is the same in either case. I wrote a very detailed article about all of this several years ago but can't find it right now. John, WA5BXO -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun

Re: [AMRadio] old rules

I found the article Jim I found the Article - turns out I never put a link to it on the web page http://www.qsl.net/wa5bxo/asyam/aam3.html John Coleman __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives

Re: [AMRadio] Lots of AM on 7160 Right Now!

Mike... That's good to hear and I wish my radio had been on... I'm in Eastern Oregon and my son is at Millsaps graduating on May 9... I've got to get him into our wonderful hobby... To join his 3 uncles. -73- John WB5CW -Original Message- From: amradio-boun...@mailman.qth.net

Re: [AMRadio] Tube Theremin

by. :-) I also take it to the middle school where I work and put it in my computer lab and watch the kids walk by. After we all have a good laugh, I show them a short video and then let them try. It's not as easy as it looks, or as RCA promised everyone when they tried to sell it. 73, John

[AMRadio] Gates BC-1H1 Rescue/Restore Update

at Virginia Tech during the late 1970s, to Bart and the other DJs, when I wasn't working on WJJJ, WVVV, WUVT, WKEX in nearby Blacksburg and Christiansburg. 73 John K5PRO Message: 1 Date: Sun, 22 Mar 2009 14:31:54 -0400 From: M. K. Hess mkh...@kias.org Subject: [AMRadio] Gates BC-1H1 Rescue/Restore

[AMRadio] Meter for Morrow MB 560 or MB 560A

Anyone have a junker Morrow MB 560 or 560A for parts or a plate meter for a MB 560 transmitter? I need a meter for my transmitter. Please contact me if you have a meter for the Morrow MB 560 or MB 560A. Thanks and 73, John, K5PGW

Re: [AMRadio] another thought

We have been encouraging AM activity on 7.160 for several months. When CW is no longer required, it will be a necessity. de K5SEE -Original Message- From: VJB wa3...@yahoo.com To: amradio@mailman.qth.net Sent: Fri, 13 Mar 2009 9:05 am Subject: Re: [AMRadio] another thought Charlie

[AMRadio] gas tube protection of front end

an MOV or transorb across a HF circuit as it will have a lot of capacitance. Sometimes back to back diodes are applied. Spark gaps and gas tubes still rule. John K5PRO Message: 1 Date: Mon, 2 Mar 2009 00:57:58 + (UTC) From: w...@comcast.net Subject: [AMRadio] Receiver Antenna Input Question

Re: [AMRadio] Getting started

Man... Beautiful shack... I love this website! -73- John WB5CW -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Nick England Sent: Monday, February 23, 2009 4:55 PM To: amradio@mailman.qth.net Subject: Re: [AMRadio

Re: [AMRadio] 75A2

a ham until the 90's... And so I'm wanting to go back and learn from the good stuff... John WB5CW -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Todd, KA1KAQ Sent: Friday, February 20, 2009 6:18 AM To: Discussion of AM Radio

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