[Top] [All Lists]

[AMPS] FCC certification - how do they do it?

To: <>
Subject: [AMPS] FCC certification - how do they do it?
From: (measures)
Date: Wed, 26 Jul 2000 19:31:47 -0700
>FCC 97.315 clearly states that an amplifier may be modified by an amateur 
>radio operator (1 per year).
>FCC 97.317 stated the requirements for type certification. Any input 
>attenuating device which will allow the amplifier to develop full output 
>with less than 50 watts of drive when the attenuating device is removed is 
>not elegible for type certification. This eliminates the use of a 4-5 watt 
>CB transmitter from driving a converted commercial (and type accepted) 
>amplifier to full output.

Why would a CBer buy a 4-5 w radio when 200w ham-type radios are readily 
>No where in FCC Part 97 is anythong written than states it is illegal or 
>imapprioprate for a manufacturer to provide technical information 
>regarding the design, operation or modification to a third party.
Trying to limit technical information is an excercise in foolishness.  . 

>The FCC Part 97 rules are available at and at
>Charley W1TE
>>From: "Tom Rauch" <>
To: <>
>>Date: Wed, 26 Jul 2000 11:44:59 -0400
>>To: "Fred Fliss" <>, <>,
>>   "Phil Clements" <>
>>Subject: Re: [AMPS] FCC certification - how do they do it?
>>> > <FF enquiry: How is it legal, therefore, for a commercial ham amplifier
>>> > manufacturer to offer, even to licensed hams, information that enables
>>> > operation on 10 meters?  The ability to opearate on 10 meters is
>>> > effectively disallowed by subpart 97.317 (1)>
>>> This information is furnished under seperate cover AFTER the amp is
>>> purchased by the end user. If operation above 15 meters is not possible
>>> during type acceptance testing, the amp passes this regulation.
>>Technically even that is questionable, although if the manufacturer 
>>asks for a copy of a valid license then the FCC considers it OK. 
>>The reasoning is it isn't contrary to FCC rules for an amateur to 
>>modify his own gear.
>>It is absolutely illegal to ship any amplifier that does not comply 
>>with the terms for type acceptance to any end-user in the USA. 
>>That includes amateurs, and it includes adding ten meters for them 
>>as a "service" or "favor".
>>> It is perfectly legal for an amateur to modify his equipment after
>>> purchasing it. The "after-market" instructions are therefore just as legal
>>> as instructions on how to extend the frequency coverage of a 
>>Technically they are not legal, but the FCC has always turned a 
>>blind eye as long as the manufacturer makes sure the end-user is 
>>an amateur. That was a big point of debate when the rules were 
>>created, and a verbal resolution.
>>The FCC clearly drew the line, and the line was drawn at the point 
>>where manufactures do the mod for the end-user.
>>73, Tom W8JI
>>FAQ on WWW:               <a 
>>Administrative requests:
>FAQ on WWW:     
>Administrative requests:

-  Rich..., 805.386.3734,  

FAQ on WWW:     
Administrative requests:

<Prev in Thread] Current Thread [Next in Thread>