[Amps] High SWR

[Scott McGrath]

You ask GOOG delivers

QST, vol. 31, pp. 50-53; September,. 1947.

http://forums.qrz.com/showthread.php?t=154490&highlight=lecher



Jeff Carter wrote:
> Nothing brought home standing waves to me like a slotted line.  I haven't seen 
> one of those since college, though.
>
> You can look at all the simulations in the world, but actually seeing the 
> minimums and maximums on a line can't be beat for getting the concept 
> through.  It's a shame that more folks didn't get to see those things.
>
> Couldn't the average ham, especially those with enough engineering savvy to 
> build or work on amplifiers set up a Lecher Line apparatus?  I'm not sure 
> what you'd use for a bulb nowadays that wouldn't affect the readings, though.  
> Maybe a regular bulb would be good enough for the concept. 
>
> Sounds like a good QST article, if somebody hasn't already done it.
>
> Jeff/KD4RBG
>
> On Thursday April 23 2009 14:02, you wrote:
>
>   
>> It used to be in the old days 'reflected' power was measured with lecher
>> wires and a bulb so you could really 'see' the nodes on the transmission
>> line with a meter it's more of a 'black box' and misconceptions arise
>> I also use/used a slotted line for X-band measurements.
>>
>> - Scott
>>     
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