[TowerTalk] Capacitor Value for a 160m T antenna

['DGB']

Guy, are you getting my emails regarding the FCP for 40m?

thanks 73 Dwight NS9I


On 11/8/2016 2:31 PM, Guy Olinger wrote:
> Modern toys, that's what happened.
>
> But there are some emerging, very efficient antennas where the old methods
> can't possibly tell you enough to know what to do to tune it to an
> efficient spot. They have tuning problems where you need to see separate
> graphs of the R and X components coming to the instrument, where just plain
> SWR can (and has) take one off on a wire-pruning wild goose chase.
>
> Kind of like your car's oxygen sensor and computer controlled fuel
> injection that reduces pollution from the tailpipe and improves gas
> mileage. I remember tuning dual carbs for max revs, and other stuff. Now
> you plug car into a computer at the dealer via a socket under the hood and
> the computer tunes it up for you.
>
> But I guess I like driving around in our mid-sized Ford Fusion Hybrid
> sedan, that gets 36 mpg with my wife's awful 2 mile round-trips to Target
> on a cold engine driving patterns, and gets 40-45 mpg with steady highway
> driving, once 55 with a strong tailwind.
>
> That worst case 36 mpg is better than we got with our 1965 VW Beetle, which
> barely had enough HP to get up some roads in the mountains.
>
> I do like being able to squeeze out the last 0.3 dB of antenna efficiency
> with the modern instrumentation.
>
> When I get nostalgic, I can fire up my Johnson Ranger, Collins 75A3 and
> Johnson Courier amp. I can watch the ghostly blue flickering of the 866
> rectifier tubes in the Courier, and remember how dreadfully exciting it all
> was as a teenager.
>
> 73, Guy K2AV
>
> On Tue, Nov 8, 2016 at 1:16 PM, Rob Atkinson <ranchorobbo at gmail.com> wrote:
>
>> You guys sure know how to take the fun out of something.  What ever
>> happened to the time honored method of going out to the feedpoint with
>> a SWR analyzer, plastic cutting board, fist full of clip leads, an
>> assortment of coils and air variables, and playing with the toys until
>> some transformation to 50 ohms is achieved?
>>
>> 73
>>
>> Rob
>> K5UJ
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