Hi Pete - sorry, I am not Doug... but you ask about building microphones... and one can, and I have, done practically what you ask about re-purposing electret capsules, and similar things. I have con
Ed you must be talking about those XE stations tuning up on SSB on the low end of 40m. They groan "hoooooo-la" while they dip the plate control ! SOP Best regards - Bry Carling ______________________
The only thing I ever "dip" is a little chew. 73 Bob, K4TAX -- Original Message -- From: "Brian Carling" <bcarling@cfl.rr.com> To: "Ed Purvis" <wa4njy@yahoo.com>; "Discussion of Ten-Tec Equipment" <t
I "dip" the Mrs. when we go dancing... ;-) --Anon-- The only thing I ever "dip" is a little chew. _____________________________________________ _______________________________________________ TenTec
"Dip" was pre-watt meter days. No need to dip anymore. Just tune for maximum smoke! Precisely, running full drive power, you first tune the PLATE for max smoke, then repeat the sequence of slowly adv
Author: "R. Eric Sluder - W9WLW" <resluder@yahoo.com>
Date: Sat, 01 Mar 2014 17:27:19 -0500
Rick, I do a 25/30 watt drive tune up for resonance as well. Helps my very old AL-80a not grown so much. :-) 73 - Eric W9WLW <snip> -- Sent from my Android device with K-9 Mail. Please excuse my brev
When 33W input takes you to 1500W out, 30W initial is very aggressive. --Original Message-- From: R. Eric Sluder - W9WLW Sent: Saturday, March 01, 2014 4:27 PM To: Discussion of Ten-Tec Equipment ; R
Author: "R. Eric Sluder - W9WLW" <resluder@yahoo.com>
Date: Sat, 01 Mar 2014 19:31:27 -0500
I'd say so... but that's not the case for my AL-80a since it only has one 3-500z in it. The drive requirement varies some for me... and I was just sharing a ballpark figure. I watch the meters very c
In that case you use 10w. (Or do I need to make a chart for each amp on the market?) ;-) 73 - Rick, DJ0IP (Nr. Frankfurt am Main) When 33W input takes you to 1500W out, 30W initial is very aggressive
Yes in a Class C amplifier one typically will adjust the plate circuit tuning for a dip in plate current. Then one should adjust coupling for rated plate current or rated output. Then adjust the plat
I've never been told of this trick for tuning for maximum efficiency of a class C amplifier. Is there someplace I can go to learn a bit more about it? I ask because I have a WRL Globe Champion AM tra
I comes from many years of tuning AM broadcast transmitters. The "right side of resonance" refers to adjusting the tank circuit tuning capacitor to a slightly lesser value of C which is normally turn
Ah! I've noticed this but never understood it. At least with the Globe Champ 350, the power output can increase quite a bit off resonance to the right, but the plate current also quickly gets way out
Bob, I'm glad you added this "clarifier". "The right side of resonance" is only true when minimum capacitance is clockwise and max is CCW. Normally that is the case but it might be a bit risky to ass
In a word "yes". 73 Bob, K4TAX Ah! I've noticed this but never understood it. At least with the Globe Champ 350, the power output can increase quite a bit off resonance to the right, but the plate cu
Oh yes, I've encountered those that are "backwards" in tuning as well. Even in a commercial product as I recall. But for a grounded grid linear amp, always adjust TUNE for maximum output which should
Ig not exceeding max specs. And yes of course Rick - that is precisely why we dip Ip first before everything else, and always watch for not exceeding maximum plate current rating as well as maximum I
Bry, Tuning the Plate control for max smoke results in dipping Ip, or at least within a few percentage points thereof. If it doesn't on your amp, there's something wrong with the amp. I will only sti
Some rigs yes. Some rigs no. It doesn't necessarily follow that something is wrong with the equipment. If you want an example, try looking at a Drake manual. Best regards - Bry Carling ______________
Drake was 1960. Did you mean the L4-B or the transmitters with tubes? I'm talking about modern amps built in the past 30 years. In general, when dip and max smoke don't correspond, the final is not p