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nice, yea i had a similar one, just with 2 1/2 wave legs as a vertical before. def was a good one. that one got replaced by an imax about 20' higher and i really don't notice much difference other than the fact that i can hear a distant electric fence ticker now
so each leg is 5/8~ and the ladder line IS the matcher. about 3/8~ is a 50 ohm point and thats what you trim to get the SWR down before simply feeding it with a 1;1 or coax choke. no tuner needed for just 11m
gave it a whirl flatside from the east coast hoping to net more contacts west of the rockies. the gain and radiation pattern is tight so using a geodesics tool and figuring out what local city i have to go broadside to, I got 2 trees picked out and hucked a nylon rope over the branches about 20'...
I just had the opposite complaint. WHY ARENT radios built like they were in the 70s anymore?
got an untested box of a 07 29LTDNW and a 78 29xlr. you can all probably guess which one worked
i think if you want to do dual final mods, galaxy is the brand you want if you can find one cheap somewhere in the wild. they leave the area wide open. i dont see an easy way to do duals on a 25 unless you are making a stinger
doubling your power is good for about maybe 1/2 s unit on the other end, not so much for increasing range. a final swap is more for propery driving certain amps with a high swing from a low DK.
so it turns out L9 is the culprit, so im just gonna change around EVERY ceramic around it because hell i already got a bit of time and experimentation invested so yea, 2x 82pf, 2x220pf, and a 27p. i will save this old radio with a history including the label with some old timer's CB call letters...
i find doing the TIP120 var dk with a mosfet, i find that putting a 4.7k from the +8v switched tx line makes it all play nice together. the class C setup on the FET depends on the carrier to work. i have a 66xl and i can clean swing from 20mw to 25w
no mylars had to be swapped. a slug near the PLL was just on the edge of not locking so the problem has been solved! mosfet mod thread coming soon.....
ah ok cool. the caps are all brand new bc sometimes with old radios the desire is to "just be done with it" never to crack the case for another 30 years
yea thats what I was thinkin of swappin next lol. so electrolytics being underpowered. never heard of that. so if i replace a 16v with a 25v which happened in a few slots, that has wonk potential?
so not that it changed anything, when i recapped, the main rail was swapped with a 2000uf 25v and...
so it IS a fun project with no angry customer on the other end. came in a lot with some 140's.
the thing is, it did it with the stock final too once i restored modulation, did the rest of the electrolytic recap bc why not, and i thought it came back into line until about 10 minutes AFTER i did...
the more i think about it, i should check the 8v feed on things to see if the voltage is dipping on tx tomorrow. i does kinda seem like SOMETHING is coming outta lock
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