Re: [AMRadio] Phone band expansion

Hi Jim, Although you don't specifically mention it --- like someone else did previously --- I think it would be MOST foolhardy for any AM'er to plop himself down start with the ol' buzzardry stuff in the vicinity of 3.780- 3.8-MHz...yeah, the traditional DX window... It's not always for the

[AMRadio] VHS Video of AM Operators

Good Morning All, This talk about OT audio recordings clicked a bulb of remembrance from deep withen my feeble brain... Way back, in the early 90's, when dawn AM roundtabling on 1888-KHz --- spearheaded by none other than Dick (W2UJR) --- was in vogue, Brian (WB8JBT) got the notion to start a

Re: [AMRadio] VHS Video of AM Operators

Hi Gang, Well, I dug up that old VHS tape of mine, showing the 1888-KHz AM roundtablers of 13 years ago in all their fame glory... It's a 2 hour tape, recorded on high speed. The last entry --- mine --- was made on 21st May 1993...hardly the stuff of Smithsonian archives, but maybe just ...one

Re: [AMRadio] RCA AR-77 or RCAF GR-10 Receiver

Hi Dave, I've seen a couple of these Royal Canadian Air Force versions of the AR-77 at Hamfests some years ago...back around the early 70's, QST used to advertise some surplus outfit that had a quantity of them for sale (I could never find the ad again after I got an AR-77 of my own in the early

Re: [AMRadio] FW: Request for HAM Radio Operator

Hi Jim, Yeah, I got it too --- just like I continue to get those bogus eBay / PayPal alerts from the Russian mob, those ...I've just inherited $25 million from the late President Mahoomba Umagoomba from the thuggery in Nigeria... ~73!~ Eddy VE3CUI - VE3XZ - Original Message -

Re: [AMRadio] Tower Construction

THROUGH THE CONCRETE! Take a look at the information on this site first though. You may be glad you did. http://www.scott-inc.com/html/ufer.htm Best Regards, Steve White, W5SAW SW Commercial Electronics -Original Message- From: Ed Swynar [mailto:[EMAIL PROTECTED] Sent: Saturday, June

Re: [AMRadio] UTC transformer

Hi Bill, Must be an oldie from just after WW2, or so --- my 1961 RADIO MASTER catalogue doesn't go any lower than R-14, either, I'm afraid... Good luck! ~73~ Eddy VE3CUI - VE3XZ - Original Message - From: w2dgb [EMAIL PROTECTED] To: amradio@mailman.qth.net Sent: Monday, June 12,

Re: [AMRadio] Tower Construction

Hi Dave, I have a 48' tall, tapered, self-supporting Delhi-brand tower --- 6 sections at 8' long each. The prescribed / manufacturer's recommendation is to bolt a 3' straight formed extention at the base of each leg (total of 3), to suspend these (a temporary wooden cradle will do admirably, as

Re: [AMRadio] 10 Meters

Hi Mark, That was most likely ol' Jack (KH6ZZ), a FB fellow who has given most everyone his/her first (and probably ONLY!) Hawaii QSO on AM... ~73~ Eddy VE3CUI - VE3XZ - Original Message - From: Mark K3MSB [EMAIL PROTECTED] To: [EMAIL PROTECTED] Cc: amradio@mailman.qth.net Sent:

Re: [AMRadio] AM Linear Operation

Hi Mike, I'm sure it's been all hashed --- and re-hashed! --- here before, but a good rule of them is this: to determine the (safe!) carrier output capability of your linear amplifier in the AM mode, take note of the plate dissipation of your tube(s) from the tube manual, then divide by two...

Re: [AMRadio] 813 question

Brett, Those 813's are practically indestructable --- and I should know, too, having used them in my amplifier for some 16 years now (only had to replace the tubes ONCE!...and we're talking surplus/Hamfest jugs here, too)... I have examples here of BOTH the graphite AND metal plates --- NO IDEA

Re: [AMRadio] Millen High Voltage Connectors

Hi Dave, I solved the problem of HV B+ arc-overs here by exclusively using NOTHING but good-quality SO-239 coax receptacles, RG-8 coax lines for the B+ leads, terminated in good-quality PL-259's... Works like the proverbial charm --- have yet to encounter ANY arc-over failures since adopting

[AMRadio] High Voltage Power Supplies

'Morning All, I'm curious as to why I have to replace the silicon diode strings in my 2500 VDC power supply about every 8-10 years, or so...I just went through the exercise again early this morning --- turned on the B+ to my 2 x 813 linear, got nothing back for my trouble but smoke from

Re: [AMRadio] High Voltage Power Supplies

--- Ed Swynar [EMAIL PROTECTED] wrote: 'Morning All, I'm curious as to why I have to replace the silicon diode strings in my 2500 VDC power supply about every 8-10 years, or so...I just went through the exercise again early this morning --- turned on the B+ to my 2 x 813 linear, got

[AMRadio] Made-In-China TOOBS...

Good Day All, Has anyone reading this post had any experience(s) --- pro, or con, or otherwise! --- with Chinese tubes...? I'm specifically interested in the types 211 and 203A triodes. Your thoughts are appreciated --- thanks in advance! ~73~ Eddy VE3CUI - VE3XZ From [EMAIL PROTECTED] Fri

Re: [AMRadio] Heath SB Problem!

Good Morning Bob, Ah yes, the very infamous friction drive disk --- surely *THE* Achilles heel in the otherwise excellent SB-series from Heath... Some years ago a chap posted a description of his own homebrewed version of a direct REPLACEMENT for that contraption --- I wish I could recall his

Re: [AMRadio] Seeking tubes

Hi Don, Hardly so, I'm afraid...a 204A just closed on eBay for a mere twenty-five bucks! Just one bidder, too... ~73!~ Eddy VE3CUI - VE3XZ - Original Message - From: Merz Donald S [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Thursday, July 07, 2005 8:14

Re: [AMRadio] Seeking tubes

. The only one I have ever seen in the flesh is the dud that Play Things of the Past carries around to hamfests as a display. 73, Don M. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Ed Swynar Sent: Thursday, July 07, 2005 10:49 AM To: Discussion of AM

[AMRadio] Surplus in Mexico...

Has anyone reading this ever had any experiences with surplus radio / electronics emporiums in sunny Mexico...? Do such places like this even exist in the sunny south...? ~73~ Eddy VE3CUI - VE3XZ From [EMAIL PROTECTED] Sun May 1 16:25:29 2005 Return-Path: [EMAIL PROTECTED] X-Original-To:

Re: [AMRadio] Re: [Boatanchors] Surplus in Mexico...

Hi Jim, Many thanks! Maybe I'll ask a few of the locals when I'm down there, too... I recall reading in ER a LONG time ago about somebody who found a surplus place somewhere in Mexica---had a bunch of old military gear R390A's, but I can't recall the prices... Can you imagine trying to load

Re: [AMRadio] Re: [Boatanchors] Surplus in Mexico...

W5JO - Original Message - From: Ed Swynar [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Sunday, May 01, 2005 5:55 PM Subject: Re: [AMRadio] Re: [Boatanchors] Surplus in Mexico... Hi Jim, Many thanks! Maybe I'll ask a few of the locals when I'm down

[AMRadio] January 1969 QST...

Well, I broke down to-day cleaned up the shack---took a day's vacation from work just to do it---got a real work-out putting things in order, believe me! Anyway, with QSTs here going back to 1916, half the battle was getting THEM all sequenced again, on the shelves...but after the dust of

[AMRadio] A MATE for the MIGHTY MIDGET...

Hi Gang, Well, during these here Easter Holidays---for whatever reason, I do NOT know---I reprised from atop the storage shelf my old homebrewed (circa 1995, or so) Mate for the Mighty Midget superheterodyne receiver (see April 1966 QST, or the 1969 ARRL HANDBOOK)... WOW! I'd forgotten how

Re: [AMRadio] Friday Night AM operation Long

Hi Pete, I think, in their own minds, they're keeping another old Ham tradition alive, i.e. the old-fashioned open-mic house party... I recall reading in my back-issue QSTs from the late 20's/30's, editorials railing against this practice, which seemed to bring forth the image to the world of

Re: [AMRadio] AM Usage with Linear AMPS

Mike, Ain't that exactly what I said 'way back at the very beginning of this thread...?! Hi Hi :) ~73~ Eddy VE3CUI - VE3XZ - Original Message - From: Mike Dorworth,K4XM [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Wednesday, November 24, 2004 8:14

Re: [AMRadio] AM Usage with Linear AMPS

Ralph, A good rule of thumb to follow is simply this: the maximum carrier output you're going to safely get out of your separate linear amplifier is limited to HALF of the plate dissipation of your linear's tube(s)... Example: I sometimes drive my HB 2 x 813 as a linear for AM. Each tube has a

Re: [AMRadio] AR-88 Cabinet or Equivalent

Tony, Those cabinets appear periodically on eBay...there was one on there about a year ago, or so, from a chap in Alberta with an opening bid of, if I recall correctly, $25.00. It went unsold, with no bidders. Good luck! ~73~ Eddy VE3CUI - VE3XZ - Original Message - From: [EMAIL