[Antennas] Diminishing Returns

[Ron Youvan]

> Interesting project...and I applaud the effort...but then:

> A spectrum analyzer 1000ft away was easier, faster and more reliable,; I
> understand your reasons but even so,
> the HF to 440 translator:
> 1) required an IDER on the output (did it have one?) no matter what the
> power output, it is an intentional radiator in the ham bands

   We found by trial and error that when we ID ed the 40 meter transmitter the very same 
voice identified the 70 cm output of the translator, we concluded that this was 
satisfactory.  We saw no output when we were not transmitting on 40.

> 2) the unit could NOT be overloaded or else the output would be overdriven
> and not linear...thus skewing the results of the UHF signal...kinda hard to
> do without a GREAT AGC..

   We tested the translator with more power than was used in the test and we saw no 
compression, the system is linear, there is no AGC anywhere in the test.

> 3) The cost of designing and building one was probably more than what the
> price of a good spectrum analyzer (Even rented!) would be...just having one
> person at the analyzer take readings would be faster and much more accurate.

   We do this sort of things at this club, we learn and we enjoy.  The analyzer existed 
and was in good operating order.  Tony built the translator and Al built the receive antenna.
-- 
    Ron  KA4INM - I'm proud to be Chuck's pop!