Thanks so much for that information, Paul!! Have a good evening! 73, Charlie,K4OTV From: Paul Staupe [mailto:staupe@gmail.com] Sent: Tuesday, January 07, 2014 7:09 PM To: topband; charlie-cunningham@
True! But some topband ops seem to just like to "dig in the dirt" to bury radials! One other consideration on radials above or below ground may be their effect on your receiving antennas. Lee K7TJR _
Hi, Bill I was also going to ask if you have a choke input filter -or if you could change the PS filter configuration to choke input to help a bit with the HV. Also, check your line voltage - especia
Hi, Bill Well, I suspect that the light bulbs may be a "tip-off". The do make 130 volt bulbs for folks with line voltage that runs a bit high, but that doesn't help you DX-100 or other appliances. So
Hi, Bruce Well, I agree. And if I follow your reasoning, it doesn't take much of an increase in line voltage to push the HV from 825 VDC to over 900 VDC., as Bill observe. Might be the choke, but I'd
Well, here in Raleigh, I've seen it go a good bit more than 5% high at night. Still, I wonder if Bill could just put some higher voltage electrolytics in there, tune for "maximum smoke" and "let 'er
Yeah, those old "Benton Harbor Kilowatts" did a pretty good job on AM - not quite as good as a Viking II or a Viking Ranger, but pretty good. Those old 1625 modulators and a real high-level plate-mod
True! - Remember the warm glow of 866 rectifiers? Ever had one "flash-over" from plate to filament? I did once, when, I think in the "heat of battle" I applied the HV too quickly without enough filam
Hi, Jim Suggest you communicate that to Lynne Frye at Kreger Components, Inc. Salem, VA. lynne.frye@kregercomponents.com Regards, Charlie, K4OTV Several months ago, I put together a large group purch
Not lkely, I think, Jim. I presume the FET would have some significant bias ( perhaps 5-12 V) on its drain when it is not conducting, so relatively large signals are not very likely to produce non-li
Hi, Jim The first "sideband" rig I ever had -back in the 1950s was a T-19 (3-4 Mc) ARC-5 in which I converted the 1625 finals to a high-level balanced modulator by connecting the balanced grid tank t
That Heathkit VF-1 freed a lot of us from being "rock-bound" back in the old days! 73, Charlie,K4OTV --Original Message-- From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of James Rode
Hi, Mike Well, I don't remember just where I got the plans for mine, but it worked great. The T-19 was the 3-4 MHz Navy version, in a black wrinkle finish enclosure. Those were amazing radios! Amazin
Hi, Carl Well I never could have afforded anything as fancy or expensive as a Viking 1 or HQ-129 in those days. My first ham receiver was a 4-tube Heathkit AR-3, equipped with the QF-1 Q Multiplier a
Hi, Bruce Yes, I remember "The IMP - A 3 Tube Filter Rig" by Joe Galeski, W4IMP! Wanted to build one, but by then I was designing and building my own rigs, and home-brewing my own back-to-back double
Hi, Carl Well, you have good taste in radios and music! Don't thing it was Ike Turners' rendition of "Rocket 88" that the DJs were playing in the bars and "boogie joints" that I frequented. It was a
Well, you'd have a "slant" or "tilt" polarized radiator. You could make the top horizontal wire a 1/4 wavelength and let it be an elevated radial and treat the vertical wire (probably bent horizontal
That's a good one for 80m from KL7! FB! 73, Charlie, K4OTV --Original Message-- From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of Gary and Kathleen Pearse Sent: Tuesday, January 21,
Well, I've worked a lot of good stuff all over the world on 160 with an inverted L with two elevated radials - because that's what I had room for. If you get up to 4 symmetrical elevated radials ther
That's certainly true! Charlie, K4OTV --Original Message-- From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of Guy Olinger K2AV Sent: Tuesday, January 21, 2014 11:59 PM To: Joe Subich,