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corrected the schematic too.

quite honestly, this thread should be pinned. the less people snip limiters and do a 2w resistor and cap, the better for the noise levels when that skip opens up. the thing is, even if you just crank the limiter open for happy watts and get a little pinching in it, it's still way less than any...

you should definetly try it. this is gonna be my go-to from here on out instead of the npc/rc things with the tip120 in the driver's path. so much better

i did 12 years or so ago. that rig screamed. 2 swingin 80 all day

IT WORKS FLAWLESSLY 1st prototype using the TIP142 has me swinging wicked clean on a president zachary T. we're talkin .4w swingin 15PEP. i'm happy. so there you have it. 2.2uf delay, TIP142 for a bigger regulator, and i believe this things ready for bigger-final rigs

1st proto with fat darlington TIP142 which is a to-247 package with a little more surface area to sink off.

if you can post those, i would love that. im gonna try to get ahold of one of my friends who has the 66xl. I would like to see the horrors of my work 10-12 years ago

laz. yes i was trying to remember his name

and yes, 470 uf is the key on cobra chassis rigs

yea, i might just exclusively with this method. pulling the driver jumper and doing the NPC that way even on a 29 leaves a flatline across the middle of the scope, even with the limiter set to clip. its only less-worse on them models than other chassis rigs that i've tried that with for some reason

if i remember correctly i was a part of that thread initially and ummm, cbtricks forum? i remember the guy was a pretty high-level tech, forget his handle. so theres a pc66xl with an rfx75 and a couple of uniden 510's kickin around with this in it that i did up. the 66 had a hi-lo swith on the...

there it is! annnd i realised the typo on my schematic C1 is a 2.2uf for the drop-off delay

its been about 10 years since i tried this, and i used a tip120 for the envelope expander so i decided to upgrade that to a to-247 type for this go-round. what i want is a nice clean waveform on the scope and a 1/2 watt dk

so i have done this on radios in the past with a TIP120, and i got some wicked clean swing from it from when i tried this 12 years ago. I have ordered some bigger darlingtons, gonna give it a whirl again because only a few chassis do the TIP120 variable DK gracefully. this is a little more...

im gonna go out on a limb and assume you don't have a scope.....

kcb4010

Kraco KCB 4010

just got a courier spartan pll real cheap. thinkin it's gonna get some recap love, but i want to set it up to drive a 1 or 2pill so i'll need to drop that carrier. any tips on that one?

guy told me he quickly hit it with reverse polarity, the sacrificial lamb diode didn't pop. now it doesn't move from something like 27.565.

the EDZ is great. do it. i have converted all my outdoor feedline over to balanced feed using a 9:1, 450 ohm, and a folded dipole hung vertically in a big pine. For my west coast antenna, i plan on making a 4x phased array of 1.25~ doublets like the EDZ between 2 90' pines with 600 ohm. no...