[BC] Part 15 radiation Limits...

[Rev. Robert P. Chrysafis]

<Quote>

Subpart C -- Intentional Radiators -
?15.209   Radiated emission limits; general requirements.

(a) Except as provided elsewhere in this subpart,
the emissions from an intentional radiator shall
not exceed the field strength levels specified in the following table:

<Quote>

Part 15.219 and Part 15.209 are Exclusive of each other.

IE: you go by part 15.209 "IF" you don't meet the requirements set forth in 
part 15.219

That is how most interpret the above statement in part 15.209.

part 15.209 is also used as general emission limits in a carrier current 
system not used on a college campus.

there is another part specificly adressing campus stations.

----- Original Message ----- 
From: "Burt I. Weiner" <biwa at earthlink.net>
To: <broadcast at radiolists.net>
Sent: Saturday, February 04, 2006 11:53 PM
Subject: [BC] Part 15 radiation Limits...


Here's the rest of it;

Subpart C -- Intentional Radiators -
?15.209   Radiated emission limits; general requirements.

(a) Except as provided elsewhere in this subpart,
the emissions from an intentional radiator shall
not exceed the field strength levels specified in the following table:

------------------------------------------------------------------------
                                                              Measurement
          Frequency (MHz)                Field strength         distance
                                       (microvolts/meter)       (meters)
------------------------------------------------------------------------
0.009-0.490......................  2400/F(kHz)                      300
0.490-1.705......................  24000/F(kHz)                      30
1.705-30.0.......................  30                                30
30-88............................  100 **                             3
88-216...........................  150 **                             3
216-960..........................  200 **                             3
Above 960........................  500                                3
------------------------------------------------------------------------
** Except as provided in paragraph (g), fundamental emissions from
   intentional radiators operating under this section shall not be
   located in the frequency bands 54-72 MHz, 76-88 MHz, 174-216 MHz or
   470-806 MHz. However, operation within these frequency bands is
   permItted under other sections of this part, e.g., ?? 15.231
   and 15.241.

Burt

At 02:16 PM 2/4/2006, you wrote:
>From: "Rev. Robert P. Chrysafis" <kc8gpd at hotmail.com>
>Subject: Re: [BC] AM Radio Kit
>To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
>Message-ID: <BAY103-DAV13F27B6188BA7A61A5B068C0C0 at phx.gbl>
>Content-Type: text/plain; format=flowed; charset="iso-8859-1";
>         reply-type=original
>
>  Subpart C -- Intentional Radiators - ?15.219   Operation in the band
>510-1705 kHz.
>
>       (a) The total input power to the final radio frequency stage
>(exclusive of filament or heater power) shall not exceed 100 milliwatts.
>
>       (b) The total length of the transmission line, antenna and ground 
> lead
>(if used) shall not exceed 3 meters.
>
>       (c) All emissions below 510 kHz or above 1705 kHz shall be 
> attenuated
>at least 20 dB below the level of the unmodulated carrier. Determination of
>compliance with the 20 dB attenuation specification may be based on
>measurements at the intentional radiator's antenna output terminal unless
>the intentional radiator uses a permanently attached antenna, in which case
>compliance shall be demonstrated by measuring the radiated emissions.
>
>Authority: 47 U.S.C. 154, 302, 303, 304, 307, 336, and 544A.
>
>Source: 54 FR 17714, Apr. 25, 1989, unless otherwise noted.

Burt I. Weiner Associates
Broadcast Technical Services
Glendale, California  U.S.A.
biwa at earthlink.net
K6OQK



_______________________________________________
This is the BROADCAST mailing list
To send to the list, email: broadcast at radiolists.net
For sub changes, archives and info on this other lists: 
http://www.radiolists.net/