Re: [AMRadio] Relay Needed

David, I found the spec sheet on the relay I used. It is a P&B PM-17AY-120. I can fax you the spec sheet if you want me to and give me a fax number. If this is the relay you need to replace, you won't ever have to replace it again. IT IS QUALITY!!! 73, John, K5PGW ; --- david kneppe

[AMRadio] "Heavy Metal Night"

When "big egos" with "big transmitters" stampede across the AM window and trample Rangers. Please don't let your lovely wife stand on the Ranger!! 73, John, K5PGW __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the be

Re: [AMRadio] 11 pin plugs

On Thu, 28 Dec 2006, John King wrote: Some time back, someone had 11 pin plugs to dispose of for the shipping. I sent shipping, but no plugs ever arrived. Am I the only one who didn't receive 11 pin plugs? 73, John, K5PGW Out of the over 300 plugs I sent out - a few did not reach

[AMRadio] 11 pin plugs

Some time back, someone had 11 pin plugs to dispose of for the shipping. I sent shipping, but no plugs ever arrived. Am I the only one who didn't receive 11 pin plugs? 73, John, K5PGW __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best

[AMRadio] Trapezoidal pattern scopes

ector/amplifier type thingy and use it to blank the Z-axis (or dim it substantially) during periods of no mod. I have done the above - and I also snagged a Central Electronics MM-1 scope, which, when it's HV issues are sorted out, will be used here at the station. Cheers John KB6

Re: {SPAMFILTER} Re: [AMRadio] Odd signals in lower 80 meters

AMEN!! --- "Anthony W. DePrato WA4JQS" <[EMAIL PROTECTED]> wrote: > > >Hi Bob: > > you are correct It is a good buddy club. what we > like and want is > what the hams like and want . je i got so sick > of that crap years > ago. back in the 50's if i recall QST had > little card f

Re: [AMRadio] Odd

for Amateur Radio because he is in control and no one shall get to the decision making table lest they come by him and "leave the thinking to his Majesty". I have felt for over 25 years that the "CEO" was the problem for all Hamdom. 73, John, K5PGW --- Peter Markavage <[EMAI

[AMRadio] The Attribution of Seminal Inventions

well... Cheers and Best of the Season! John KB6SCO DM09fg __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net

[AMRadio] Another BC transmitter move...

tation, it will remain in the bedroom for now, but if i eventually finish the conversion of the 314R1 to HF, it will probably be remote controlled from the house. Now if I could just get my soldering iron hot again and finish the VFO replacement for the DX100, i might get to enjoy this winter on t

Re: [AMRadio] Odd signals in lower 80 meters

a of each. Folks hold up while I get my fire suit onMerry Christmas and Happy New Year!!! 73, John, K5PGW "Anthony W. DePrato" <[EMAIL PROTECTED]> wrote: > > >. Forced 'dumbing down' of QST (and other pubs > other than the > >Handbook) was

[AMRadio] RCA Transmitter Rescue trip report

e's that solderin' iron of mine...? Cheers and Best of the Season to All!! John KB6SCO DM09fg __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net

Re: [AMRadio] Test

On Sun, 24 Dec 2006, Joe Walden wrote: Test Continuity? Emission? Transconductance...? Cheers and Best of the Season! John KB6SCO DM09fg __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio

Re: [AMRadio] Transformer baking Recovery

Thanks Joe. 73, John, K5PGW --- crawfish <[EMAIL PROTECTED]> wrote: > John, I received a Word document from W4AEE about > this very subject. I am > having problems with Word on this computer, so I > can't forward, but you > might want to check with him.He is on this ref

Re: [AMRadio] Forty and 80 meter AM freqs

I agree with your position wholeheartedly, Jack. 73, John, K5PGW --- Jack Schmidling <[EMAIL PROTECTED]> wrote: > [EMAIL PROTECTED] wrote: > > I understand that there has been some AM action on > the new part of the phone > > band on 75/80 meters - where should I look f

Re: [AMRadio] "as the FCC intended"

ers and a lot more pleasant to hold a QSO. In case you wonder if I have the power, I have the KILOWATT built by Sulphur John ( the late WD5EHS) and as you said "it was a class act on 20 meters". Well it will do the same on 75/80, but why should I have to run that much power to elbow my way

Re: [AMRadio] HV Wire

very well and has given no trouble. Not rocket science. My two cents worth. 73, John, K5PGW --- Jack Schmidling <[EMAIL PROTECTED]> wrote: > Rick Brashear wrote: > > Jack, > > How far do you have to run the wire(s)? > > Less than two feet. I made a new dolly

[AMRadio] 3 kV CT transformer

with their 700 series: http://www.hammondmfg.com/700.htm Good luck, finding iron isn't as hard as you think, but you have do more than post classified wanted ads to get them. 73 John K5PRO __ AMRadio mailing list List Home: http:/

Re: [AMRadio] Odd signals in lower 80 meters

Maybe they are the digitized audio from the AR9000 digital voice device that converts SSB into digital signal that is decoded by another AR 9000. I think that is the model number of the device made by AOR and is advertised in QST magazine 73, John, K5PGW --- "A.R.S. - W5AMI&quo

[AMRadio] eBay CB amp

s with the emphasis on 'intermittent'. Cheers and Best of the Season John KB6SCO DM09fg __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net

RE: [AMRadio] WTB: HV Transformer

Jack: I really think you should consider the solid state rectifier option for at least the other two diodes and go bridge with the XFMR. That you have. John -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jack Schmidling Sent: Tuesday

Re: [AMRadio] Transformer baking Recovery

Did John, WA5BXO, bake the transformers? I have a nice BC 610 E that has been in the State of Kentucky until a couple of years ago ( not Gulf Coast humidity) and in my enclosed garqage in South Louisiana for about two years. I plan to fire it up soon and an wondering if I should apply heat with

RE: [AMRadio] No Code Pros and Cons

I agree with John Lawson, that learning code has nothing to do with intelligence any more than learning Spanish or playing the guitar which I can do neither. Yes I did pass my 20WPM but I am thankful I don't have it to do again. So let us all hope that the loss of the testing for CW will br

[AMRadio] Re: no code plus and minus extra

Greetings fellow devoted followers of "Amplitude Modulated Voice Communications" H.. You have forgot one of the bad things of nocode. You all will be stuck with me in a few weeks! Warming up the heaters in the Valiant, I remain, John Fl

[AMRadio] No Code Pros and Cons

get out there and be their Teacher - be their Elmer - inculcate the Ham Values that you know so well - if Gordon West can teach tens of thousands - y'all can certainly get a shack full of Boy Scouts (AND their parents, don't forget the Dads and Moms) an evening a week - PLU

Re: [AMRadio] the 3600 - 3635 spectrum

on enough) then I'd like to offer the suggestion that each you consider volunteering a bit of your time and get a Ham Class going in your area... the more you teach properly - the more they will respect the Bands when they get their Ticket. And how's THAT for 200 millidol

[AMRadio] the 3600 - 3635 spectrum

"Alternate spectrum from 3585 - 3600." Does this mean that we keep the 3600 and up for voice? Is the FCC saying these digital guys need to just move down? I have a lot of mixed emotions about the code exam being gone. John, WA5BXO -Original Message- From: [EMAIL

RE: [AMRadio] Band Warming and K5SWK

We will be in the usual AM window on 75 mtrs until 11PM or so. I'm leaving to get Otis now and it is 7:40PM here in South Texas. 73 John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of A.R.S. - W5AMI Sent: Thursday, December 14, 2006 11:

[AMRadio] Band Warming and K5SWK

Otis, K5SWK may be on the air tonight from the BXO/PKD shack. If the noise is too bad I may have to call someone on the phone to act as a remote receiver site. John, WA5BXO __ AMRadio mailing list List Home: http://mailman.qth.net

RE: [AMRadio] 5691, 5y3's for sale

air night. 12-14-06 Merry Christmas John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Brett gazdzinski Sent: Saturday, December 02, 2006 7:06 PM To: 'Discussion of AM Radio in the Amateur Service' Subject: RE: [AMRadio] 5691, 5y3'

Re: [AMRadio] I wish the Sun would control himself

Quick, somebody call in Dr. Phil. --- [EMAIL PROTECTED] wrote: > > This afternoon/evening I was building and testing a > 10.0 MHz WWV receiver to > replace the dying Heathkit "Most Accurate Clock" > receiver at my work. All was > going well until the WWV signal faded out suddenly. > I fooled

[AMRadio] GE 250 watt TX

The RCA BTA250L used same modulator and RF final tube lineup and is most likely very similar circuitry. The 250L is a neat box. You can download the manual at http://sujan.hallikainen.org/BroadcastHistory/, look under RCA. Be aware that its 29Meg filesize. John K5PRO > Message: 2 > Dat

Re: [AMRadio] Questions on TBS-50

that helps. Does anyone have a silk screen for re-lettering a TBS 50 after it has been repainted? 73, John, K5PGW --- [EMAIL PROTECTED] wrote: > -Original Message- > From: [EMAIL PROTECTED] > > A couple questions on the Harvey Wells TBS-50 > transmitter... any

RE: [AMRadio] Component ID please

ng of 2KV (multiply the scale by 4) then the total resistance should be 2 MEG. John -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jack Schmidling Sent: Monday, December 11, 2006 9:55 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AM

Re: [AMRadio] ARRL asks for modification of 80 meter plan

naw, it took them this long to find an excuse. CW is dead and the digital modes are only used by a very few. They can move just like we can. John N1fcu --- Jim Wilhite <[EMAIL PROTECTED]> wrote: > Sore losers aren't they. Want more digital and CW. > I am > surprised t

RE: [AMRadio] Component ID please

meter will read 500. Good Luck John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jack Schmidling Sent: Monday, December 11, 2006 5:32 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] Component ID please John E. Coleman

[AMRadio] gettering, 813s and 833s

de color. Zirconium also releases some gasses and absorbs other gasses at various temperatures. The varying temperature across the length of the anode (and as the anode heats and cools) allows the gettering agent to absorb a wide variety of gasses. 73 John K5PRO Thermionic device user with

Re: [AMRadio] Re: Screen Modulated 813

On Mon, 11 Dec 2006, ne1s wrote: It's also why it's used to "encrust" tweezers ;>) Perhaps you can also tell me why dennilfloss bushes will grow in Montana - but do so badly here in NoNev? Of course I could always *move* to Montana Cheers and Best of

[AMRadio] FW: Noise in the shack

. John, WA5BXO -Original Message- From: BJ Lowery [mailto:[EMAIL PROTECTED] Sent: Monday, December 11, 2006 12:33 PM To: John Coleman Subject: Noise in the shack I checked the level in the shack this morning. When I turned everything on I had about a 2 on the meter. Not bad for out

RE: [AMRadio] Step Start

Jack I would dispense with the startup circuit. With the choke input filter system and only 4mf of output capacitance you want need a start up circuit. When I hit the push to talk switch is when my PS plate XFMR comes on. The heaters to the 866 are on all the time. John -Original Message

Re: [AMRadio] Screen Modulated 813

quot; or "bad" I cannot say. If an expensive power tube has it's useful life cut in half, or more, from 'abuse' - especially if it's a fairly 'rare' type - well then Dat wuz all I wuz tryin' t' say. Cheers and Best of the Season! Jo

Re: [AMRadio] Screen Modulated 813

On Mon, 11 Dec 2006, Jim Wilhite wrote: You are most correct John, I was speaking of power tubes not the lesser cousins. I didn't make that clear but in light of the subject, I plead not guilty. Well - speaking as someone who will very soon be conducting QSOs via 833s and

Re: [AMRadio] Screen Modulated 813

On Mon, 11 Dec 2006, david knepper wrote: John, you better check your copy of Eimac's classic on the Care and Feeding of Power Amplifier Tubes. Which edition? I think I have 'em all... ;} I strenuously re-iterate the point that making a sweeping omnibus generalization

RE: [AMRadio] Component ID please

used with an external resistor arrangement or divider. With the proper circuitry and switch it could be a 0-500 milliamp or 0-5KV. John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rick Brashear Sent: Monday, December 11, 2006 10:28 AM To

Re: [AMRadio] Screen Modulated 813

power tubes - might save some bucks in the long run. Just my 200 millidollar for a Monday Morning... Cheers and Best of the Season John KB6SCO DM09fg __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/am

[AMRadio] Cetec/Sparta (Bauer) 701B

That Sparta transmitter is already claimed, it went fast. It was up near Des Moines, IO, and was a great deal, free. It had 4-500s in it I believe, pair modulating a pair. The B model had solid state driver for audio and RF - great rig to convert up to 160 or 75. 73 John K5PRO New Mexico

[AMRadio] Early antennae

mplitude Modulation" meant putting a (huge) carbon microphone directly in the primary of the "transmitting coil" - basically you'd be talking (shouting) into a mic connected dirctly to your high power tuned Tesla coil I, for one, much prefer 833s, 405s, hell even 4CX30,000s..

Re: [AMRadio] High-power tuners

I intend to add 'rhombic' to my Ham Lexicon. Cheers and Best of the Season John KB6SCO DM09fg __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net

[AMRadio] High-power tuners

On Thu, 7 Dec 2006, A.R.S. - W5AMI wrote: John, a very large rf coil with rotating link off epay several years ago, along with a split stator air variable of about 250pf per section and probably 7+kv rating. Very simple to build if you can find or make Is this 'rotating link&#x

RE: [AMRadio] Pw Supply

you would be at or about the legal limit with full sine wave modulation. To stay legal I would run a little less voltage so that the audio peaks don't go over the 1500 watt limit while running voice because of asymmetrical voice wave forms. See http://www.qsl.net/wa5bxo/asyam/aam3.html

[AMRadio] High-power tuners

rew or commercial (or military?) tuner - I'd be curious as to pros/cons - likes/dislikes - horror stories, etc. Cheers and Best of the Season John KB6SCO DM09fg __ AMRadio mailing list List Home: http://mailman.qth.net/mai

RE: [AMRadio] Pw Supply

Good info Jim: Certainly something I never considered. John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim Candela Sent: Wednesday, December 06, 2006 5:24 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] Pw

RE: [AMRadio] Pw Supply

etic swings and DC current through the secondary that would cause the extra loss? I can see where a full wave bridge circuit for each supply and connecting the two power supplies in series would solve this. Elucidated some more pleas

RE: [AMRadio] RF Amp

as point of reference the efficiency of a class C plate modulated amplifier must remain the same for all plate voltages with in the modulation voltage range or the modulation will not be linear. So if the plate voltage is 2000 the efficiency must be the same from at least 1 to 4000 volts. John

Re: [AMRadio] T/R switching

David, do you still have the Dow Key relay? 73, John, K5PGW --- DAVID O'NEILL <[EMAIL PROTECTED]> wrote: > >I HAVE A NICE DOWKEY FOR 4O BUCKS > > > > > > > > > Hi Guys, > > I am looking for a dow key relay or some other > type of c

Re: [AMRadio] Pw Supply

the Fahwce ;} Cheers John KB6SCO PS: Yo! Don't use the Reflector for "private" replies! PPS: But, but, but I... PPPS: Well, okay, just this once! __ AMRadio mailing list List Home: http://mailman.qth.net/mailman

RE: [AMRadio] Kenyon T-161 Info?

Hold on to that Jeff I think I may build a little 812s X 811s rig again in the future. John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of ARS W5OMR Sent: Monday, December 04, 2006 5:00 PM To: Discussion of AM Radio in the Amateur Service

Re: [AMRadio] Catadioptric, was refractor

On Mon, 4 Dec 2006, Jack Schmidling wrote: Geoff Edmonson wrote: In 1988, where was the Algore, then? Back in the day, I did a bit of programming in Algore Cheers John KB6SCO __ AMRadio mailing list List Home: http

Re: [AMRadio] Breaker Info

ual-rating" devices - with two different ranges that will trip the breaker. The diagrams show 38 different configs - a bit more tracing and/or voltmeter work might narrow this down some. Cheers John KB6SCO DM90fg __ AMRad

RE: [AMRadio] Breaker Info

Or maybe it the center connector is just a terminal post with no function in the switch. John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rick Brashear Sent: Monday, December 04, 2006 10:51 AM To: Discussion of AM Radio in the Amateur

[AMRadio] Strange tube question (Off topic)

Is there anyone who knows what a Bendix TT-15 Chronotron is? Please respond to me privately, off list... thanks! Cheers John KB6SCO DM09fg __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio

RE: [AMRadio] PW Supply

impressed with the graphs. John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Brett gazdzinski Sent: Saturday, December 02, 2006 8:24 PM To: 'Discussion of AM Radio in the Amateur Service' Subject: RE: [AMRadio] PW Supply I usual

RE: [AMRadio] PW Supply

found this really neat site with some good info on power supplies http://www.qsl.net/i0jx/supply.html Hats off to Tony, I0JX John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jack Schmidling Sent: Saturday, December 02, 2006 7:12 PM To

RE: [AMRadio] 5691, 5y3's for sale

Opps Brett the 5691 is equivalent to the 6SL7 but I could build around that. John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Brett gazdzinski Sent: Friday, December 01, 2006 8:32 PM To: 'Discussion of AM Radio in the Amateur Service

Re: [AMRadio] Transmitter fitting

little cuts and jabs - I'm wondering if you're this impolite, crass, and abrasive in person?? Must make your dentist happy... Cheers John KB6SCO Loaded, moved, unloaded, installed my share of Big Iron __ AMRadio mail

RE: [AMRadio] Schematic

Maybe if it is not to complex, you could draw the circuit, reverse engineer it so to speak. Is this device made of two oscillator circuits mixed linearly and are they phase shift oscillators or do they have LC circuits. Just curious John -Original Message- From: [EMAIL

RE: [AMRadio] Schematic

Rick The most common type of failure is dried up electrolytic capacitors. John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rick Brashear Sent: Friday, December 01, 2006 4:15 PM To: AMRadio@mailman.qth.net Subject: [AMRadio] Schematic

[AMRadio] Trapped by the MailBot

quot; is a marvelous string that, I'm sure, means something, to somebody, somewhere but I changed the Subject: title and now I'm free at last - free at last! Computers. Cheers JOhn KB6SCO DM09fg __ AMRadio mai

[AMRadio] Transmitter fitting

et to rippin' !!! Then, you can get a pre-fab 36" door set complete with casement, jambs, hardware and shims some moulding and a little paint Cheers John KB6SCO Who's BigBox is going in the garage with

[AMRadio] Fire in the Wire

go ahead and take the rig, regardless. Now - gotta do a 1000-mile round-trip (Carson City -> Los Angeles -> Carson City) and fetch it back up here. And, I'll document the Progress as it goes - I have a nascent website just for my boatanchor stuff - time to dust it off and ge

[AMRadio] Nice AM 80M QSO this evening

bject in a later broadcast, as they say. Cheers John DM09fg __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net

[AMRadio] Re: AMRadio Digest, Vol 34, Issue 65

EAR FOR YOU, I'D EVEN DATE HER BROTHER. You caught a keeper my friend! Best of luck to both of you! John __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.n

RE: [AMRadio] Telescoping pole

s been up in the air four years now, and has been in sustained winds of 70-80 MPH, and gusts of near 100 at times, temps from -10 to +110, rain snow, ice, ect. Not bad for well under $100, and only a couple of hours invested. Cheers John KB6SCO DM09fg __

[AMRadio] Re: AMRadio Digest, Vol 34, Issue 62

Gee I feel Left out He never even called me the next day!... I was tempted by the sexy AM signal from VT on Sunday AM of Field day this summer. I had set up a vintage station at the club event that operated as the GOTA station (they joked that it was the CGJAFTM station "cant get

[AMRadio] Vacuum Tube centennial

to really make tubes work well. And Marconi, well, he was hung up on >spark transmission, ignored the Poulsen/Federal arc (close to CW) and didn't >jump on HF alternators either (like GE did). Tubes became the equalizer >eventually, as they became the WAY to make, detect and am

RE: [AMRadio] New Transmitter

pull circuit with plug in coils. The coils can be hard to find but a person could home brew them as a lot of folks do. My favorite tubes for this service would be a pair of 812s in the final and a pair of 811As for modulators. GL, 73 John Coleman, WA5BXO -Original Message- From: [

RE: [AMRadio] Ranger Audio XFMRs and/or other trouble

I will be gone this weekend and will not be able to check email till Monday. Can't wait to see who done it. John Coleman, WA5BXO __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website:

RE: [AMRadio] Ranger Audio XFMRs

y 90K secondary. 10 ma primary current John, WA5BXO __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AM

RE: [AMRadio] Ranger Audio

saturation of the driver XFMR and to make sure it has a filter capacitor at the B+ connection. Too small of a cathode resistor on the driver tube will cause too much current in the driver tube and they can saturate the driver XFMR real quick. Good Luck John, WA5BXO -Original Message- From

RE: [AMRadio] Ranger Audio

A 150 watt bulb is going to be pretty dim with just 40 watts RF but does it brighten up with modulation at all? John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jack Schmidling Sent: Wednesday, November 15, 2006 9:50 PM To: Discussion of AM

RE: [AMRadio] Ranger Audio

But I never could stop at thre John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim Candela Sent: Wednesday, November 15, 2006 10:13 AM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] Ranger Audio John

[AMRadio] average power increase with 100% modulation (light bulb brilliance)

similar thing is true for a thermal coupled RF amp meter. It measures Average RF amps not Peak Envelope Amps John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, November 15, 2006 9:23 AM To: amradio@mailman.qth.net

RE: [AMRadio] Ranger Audio

n you say "FOUR" in the mic. The 6146 rigs I used before such as the Eico720 have been known to blow out a 40 watt bulb with modulation. Just curious John, WA5BXO __ AMRadio mailing list List Home: http://mailman.

Re: [AMRadio] Ranger Audio

what is due to the Reciever audio bandpass characteristics. Now you'll have a real idea of what the Audio bandpass 'looks' like. Cheers John KB6SCO __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/

RE: [AMRadio] Class C finals

ning is dipped, then that could be done with either tube. John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jack Schmidling Sent: Monday, November 13, 2006 10:38 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio]

RE: [AMRadio] Class C finals

be quite this good since it is a tetrode with an indirectly heated cathode. John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim Candela Sent: Monday, November 13, 2006 5:14 PM To: Discussion of AM Radio in the Amateur Service Subject: Re

RE: [AMRadio] Class C final tube swaping

Push pull John -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rick Brashear Sent: Sunday, November 12, 2006 10:28 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] Class C final tube swaping John, When you had these experiences

Re: [AMRadio] HQ-170 - distortion on AM

mode knob on "AM" and leave it that way. Cheers John KB6SCO DM09fg __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/

[AMRadio] Class C final tube swaping

d conduction angle requiring a reduced load in order to maintain the proper Q in the tank. Improper Q, conduction angle outside the normal 70 degree window, these things can cause a lot of improper modulation characterizes. Maybe I&#

Re: [AMRadio] 813/811 Rig

Bob's yer Uncle. Especially if you tend to hang on one band a lot... for example 90% of my AM work is on 80 meters - so a near-KW amp for that small segment would be a pretty easy project to accomplish. And 833s are cheap, plentiful and nicely un-fussy... Cheers Joh

RE: [AMRadio] Ranger... good news, bad news

That's a good idea Gary. John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Gary Schafer Sent: Monday, November 06, 2006 6:56 PM To: 'Discussion of AM Radio in the Amateur Service' Subject: RE: [AMRadio] Ranger... good news, ba

Re: [AMRadio] 9-pin Johnson plugs

o it as well ;} Cheers John KB6SCO __ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net

RE: [AMRadio] Ranger and Scope

to large in resistance then there will be phase shifts that may cause the scope pattern to look funny. If the resistance values are too low then it will load the modulation XFMR more than you want to. Avoid wire wound resistors as the inductance causes phase shifts at higher frequencies. John

[AMRadio] 9-pin Johnson plugs

ting compound while it sets up. HOWEVER: I'd hesitate to use RTV as some of it is quite conductive based on proper curing times, and pigmentations. If RTV is used, I'd be inclined to getting the clear variety and letting it cure for a day or two to be sure all the acetic acid is expell

RE: [AMRadio] Why it is good to have a basement awash in parts

tinkers, I love it. John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mark Foltarz Sent: Monday, November 06, 2006 10:55 AM To: amradio@mailman.qth.net; GlowBugs Subject: [AMRadio] Why it is good to have a basement awash in parts As I get ready

RE: [AMRadio] Ranger... good news, bad news

tuned. I may have just talked myself into something!! John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jack Schmidling Sent: Sunday, November 05, 2006 10:09 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] Ranger...

RE: [AMRadio] Ranger... good news, bad news

voltage double type circuit perhaps a little circuit change up with some HV switches might be in order here? Any Ideas on this? John, WA5BXO BTW the stock plate RF choke in the SB200 is NOT large enough on 75 mtr and a lot of RF gets back into the PS causing weird AC modulation at low carr

RE: [AMRadio] 813 filament voltage

ned (especially in thoriated filaments, which depend on replenishment of thorium by diffusion from within the filament wire). A few researchers have observed that the lifetime of an oxide-cathode tube can be greatly increased by operating its heater at 20% below the rated voltage.

RE: [AMRadio] Stewart Warner, old radio

conductive liquid separated by an insulating material which is; 1. A result of a chemical change at the surface of the foil. Or 2. The metal foil is already coated with an insulating paint which is not penetrated by the electrolyte? I think it is the first John, WA5BXO PS: Using the term

[AMRadio] Stewart Warner, old radio

that a lot of the components are of the wrong value or miss wired due to previous service. If anyone has a wiring diagram and parts list that I could use then I will sing your praises and send a message to your wife telling her not to talk bad about you, ETC. John, WA5BXO

[AMRadio] old round aluminum filter Capacitors

efore was laid in the can like an accordion. I don't get it. I guess I have never actually examined these darn things before but I did this time because I wanted to replace the insides of the cans with modern electrolytic capacitors thereby hiding the modification. Still learning Jo

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