[TenTec] humm

[Jim Brown K9YC]

>Resistance is indeed the evil.

With lightning, it is INDUCTANCE, NOT RESISTANCE. The energy in 
lightning is centered around the AM broadcast band and extends 
well into the HF spectrum. Above about 20kHz, the inductive 
reactance of any conductor is much greater than its resistance. 

>Some hams ground the negative terminal of an Astron to its case, 
>but that gurantees a ground loop with your antenna coax shields, 
>and will lead to lightning damage to the power supply. 

WRONG. Not bonding the negative terminal to the chassis creates a 
pin 1 problem, and is likely to CAUSE damage to the supply. Study 
the material on "the pin 1 problem" on my website. 

ALL equipment chassis MUST be bonded together, AND to the antenna 
shields, AND to the power system ground, AND to the Telco and CATV 
cables and their grounds. It is when those bonds are missing that 
damage is more likely to occur. Further, the use of cheap surge 
protectors that contain MOVs is likely to CAUSE damage to 
equipment in the case of a strike. 

My website http://audiosystemsgroup.com/publish.htm

73,

Jim Brown K9YC