>
>From: "Phil Clements" <philk5pc@tyler.net>
>To: <User312627@aol.com>, <W8JI@contesting.com>,
><amps@contesting.com>
>Subject: Re: [AMPS] Re:
>Date sent: Tue, 27 Jul 1999 00:38:01 -0500
>
>> >"Q What is peak envelope power?
>> >
>> >A - Peak envelope power (PEP) is the average power supplied to the
>> >antenna transmission line by a transmitter during one RF cycle at the
>> >crest of the modulation envelope, taken under normal operating
>> >conditions.
>> >
>Phil wrote:
>>
>> I have always interpreted this to mean that one RF cycle is the MINIMUM
>> time for the measurement. Any shorter look would not define where the
>> crest of the modulation envelope is.
>
>You probably take it that way mostly because your reading skills
>are good and you understand waveshape and power.
>
>You don't see the FCC lugging scopes around, because they are
>poor devices for this application.
? [chortle] Meanwhile, back at the cal lab, a suitable oscilloscope,
termination, and multiplier probe are used to calibrate the portable RF
wattmeter.
> Most have problems with this application.
? My Hewlett Packard oscilloscope will display 2m RF from my HT. The
bandwidth is seemingly ok for HF voltage measurements. The Tektronix
x100 multiplier probe is rated at 120MHz. Why would this equipment have
"problems", Mr. Rauch? What is a "poor device"?
>
>For example, the HP 1137A HV probe has a frequency response
>limit of 1 MHz. The bandwidth spec is the point where response to
>a sinewave drops more than 3 dB.
>
? Is this an oscilloscope probe? Do you perchance own a 1MHz
oscilloscope?
- cheers, Tom
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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