>
>Rich said:
>
>There is no such thing as a perfect commercially mfg amplifier.
>
>Quite right! If there was, nobody could afford it - not even Uncle Sam!
>
** The reccomendations I made in "The Nearly Perfect Amplifier" [Jan
1994, QST] amplifier would add c. 10% to the price of an amplifier. What
percentage of the Ham community wouldn't like to have an amplifier that
includes:
*Adjustable filament/heater voltage and a simple voltmeter using the
multimeter. [$10 to $20]
* Step-start relay circuit for the entire amplifier. [$7]
* Adjustable transceiver-controlled electronic bias switch. [$2]
* High speed RF relays. [$120?]
* Low VHF-Q parasitic suppressors. [$1.50]
* Separate HV and filament transformers - preferably potted [$60]
* Compatible with 100W of drive.
* Glitch protection diodes for the meter circuits and the negative HV
circuit. [$0.30]
* Glitch resistor in series with the positive lead of the HV power
supply. [$1.10]
* Completely adjustable tuned inputs with a Q of 2 - 3. [$6]
If I were younger, and I wanted to mfg amplifiers, needless to say, I
would include all of the above features and say so in my advertisements.
For those who would like to save c. 10%, buy another mfg's amplifier and,
as an additional bonus, gain knowledge about amplifier repairs and
amplifier circuit improvements. However, for those who take this path,
a caveat -- Never, Ever write an article for a Ham magazine that
advertises amplifiers which omit the listed items above.
cheerz
- R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
www.vcnet.com/measures.
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