Peter Wieck a écrit :


For the money, and if you can get to Kutztown, I will have a
consignment of SSTRAN AMT3000 units. $80, including all taxes and with
the SMT chip already installed.


Peter,

That transmitter is NOT FCC part 15 compliant for what I know.

This would be misleading as the OP requests a part 15 transmitter
BCB.

Syls

"Syl" wrote in message
...
Peter Wieck a écrit :


For the money, and if you can get to Kutztown, I will have a
consignment of SSTRAN AMT3000 units. $80, including all taxes and with
the SMT chip already installed.


Peter,

That transmitter is NOT FCC part 15 compliant for what I know.

This would be misleading as the OP requests a part 15 transmitter
BCB.

Syls

Syl

I believe it meets the FCC regs regarding "homemade" Part
15 devices; and would be limited to the maximum number
of units allowed per individual--five, if I recall correctly.

Pete

Tio Pedro a écrit :


Syl

I believe it meets the FCC regs regarding "homemade" Part
15 devices; and would be limited to the maximum number
of units allowed per individual--five, if I recall correctly.

Pete


Dear Senor Pedro,

That "part" is unclear to me. I try to understand what makes
a transmitter Part 15 compliant when homemade as opposed
to a commercial unit. Does the 100mw input still holds
(but owner/builder doesn't have to get "approved" by FCC) or
is it a don't get caught transmitting on a commercial
frequency -i.e. create interferences- and you'll do fine thing ?

Syl

In article , Syl
wrote:

Tio Pedro a écrit :


Syl

I believe it meets the FCC regs regarding "homemade" Part
15 devices; and would be limited to the maximum number
of units allowed per individual--five, if I recall correctly.

Pete

Dear Senor Pedro,

That "part" is unclear to me. I try to understand what makes
a transmitter Part 15 compliant when homemade as opposed
to a commercial unit. Does the 100mw input still holds
(but owner/builder doesn't have to get "approved" by FCC) or
is it a don't get caught transmitting on a commercial
frequency -i.e. create interferences- and you'll do fine thing ?

I would have to check the CFR to be sure, but IIRC building a homemade Part 15
compliant transmitter doesn't absolve you from the basic requirements for
operation in the MW broadcast band like keeping the DC input power to the final
below 100 mW and the length of the antenna/ground system to 3 meters or less, I
think homemade status only eliminates the need to do the more complex
certification tests necessary for commercial units.

I also suspect that if you are using a Part 15 transmitter, either homemade or
commercial, and it interferes with a commercial frequency, then it is your
responsibility to resolve the interference problem, or shut the transmitter
down, I don't think commercial units get any special privileges in this regard,
although again I would have to check the CFR to be sure.

--
Regards,

John Byrns

Surf my web pages at, http://fmamradios.com/

"Syl" wrote in message
...
Tio Pedro a écrit :

Dear Senor Pedro,

That "part" is unclear to me. I try to understand what makes
a transmitter Part 15 compliant when homemade as opposed
to a commercial unit. Does the 100mw input still holds
(but owner/builder doesn't have to get "approved" by FCC) or
is it a don't get caught transmitting on a commercial
frequency -i.e. create interferences- and you'll do fine thing ?

Syl

Mon Ami

I tried googling the FCC website, but not much luck...
There is (was) a section that mentioned that it was legal to build
a part 15 transmitter, provided it meet the FCC requirements for
regarding power, antenna limitations and spectral purity. There
was a limit on the number of such devices that could be built and
owned by individual as well.

Pete

Tio Pedro wrote:

"Syl" wrote in message
...
Tio Pedro a écrit :

Dear Senor Pedro,

That "part" is unclear to me. I try to understand what makes
a transmitter Part 15 compliant when homemade as opposed
to a commercial unit. Does the 100mw input still holds
(but owner/builder doesn't have to get "approved" by FCC) or
is it a don't get caught transmitting on a commercial
frequency -i.e. create interferences- and you'll do fine thing ?

Syl

Mon Ami

I tried googling the FCC website, but not much luck...
There is (was) a section that mentioned that it was legal to build
a part 15 transmitter, provided it meet the FCC requirements for
regarding power, antenna limitations and spectral purity. There
was a limit on the number of such devices that could be built and
owned by individual as well.

Pete


You want to wade through CFR 47, part 15. That has the laws the FCC
is supposed to enforce.


--
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There are two kinds of people on this earth:
The crazy, and the insane.
The first sign of insanity is denying that you're crazy.

In article ,
says...


That "part" is unclear to me. I try to understand what makes
a transmitter Part 15 compliant

Syl

Part 15 Compliant is one of two possibilities.
#1.. Transmitter is actually FCC type accepted... read EXPENSIVE PROCESS

or

#2.. Home Built or Kit Built unit for your own use... but still meets
the requirements of 100 mW and antenna etc etc etc..

Both #1 and #2 above must NOT interfere with commercial services.

Again Both of the above would only be investigated by FCC if complaints
were filed.

The Guy thats back to building the kits again ... this time legally is
probably still leaving the unit in a somewhat "Kit Form" requiring
enough final construction to the end user to comply with FCC rules.

John k9uwa

On Aug 26, 6:10*pm, Syl wrote:
Peter Wieck a écrit :



For the money, and if you can get to Kutztown, I will have a
consignment of SSTRAN AMT3000 units. $80, including all taxes and with
the SMT chip already installed.

Peter,

That transmitter is NOT FCC part 15 compliant for what I know.

This would be misleading as the OP requests a part 15 transmitter
BCB.

Syls

From the website:



· Legal to use in the US, no FCC license required

· Fully compliant with FCC Part 15 regulations

· 100 mW input power

· 100% Modulation

· 20Hz to 20kHz ±1 dB Audio Response

· Very Low Distortion

· Adjustable Audio Compressor/Limiter

· 10 kHz and 9 kHz channel spacing options

· High Quality PC Board and Components

· Comprehensive Instruction Manual

This is a "HOME MADE" unit - which means that it must meet maximum
power radiation requirements, antenna developed length requirements
and various other regulations. EXACTLY the same as the Ramsey kit, the
AES kit, the L'il 7 Kit and any of several others.

What it is NOT is approved to be sold as a full-built unit.

Makes it Part 15 - compliant.

But, by removing the spaces, you can get chapter-and-verse from Phil
Bolyn at info at sstran dot com.

Peter Wieck
Melrose Park, PA

In article ,
Peter Wieck wrote:

On Aug 26, 6:10*pm, Syl wrote:
Peter Wieck a écrit :

For the money, and if you can get to Kutztown, I will have a
consignment of SSTRAN AMT3000 units. $80, including all taxes and with
the SMT chip already installed.

Peter,

That transmitter is NOT FCC part 15 compliant for what I know.

This would be misleading as the OP requests a part 15 transmitter
BCB.

From the website:

· Legal to use in the US, no FCC license required

· Fully compliant with FCC Part 15 regulations

· 100 mW input power

· 100% Modulation

· 20Hz to 20kHz ±1 dB Audio Response

· Very Low Distortion

· Adjustable Audio Compressor/Limiter

This is a misleading statement, the SSTRAN AMT3000 does not include a limiter,
manufacturers claims not withstanding. A traditional limiter as used with AM
transmitters controls the modulation peaks, either by a clipping operation, or
with a high speed peak activated AGC amplifier, the SSTRAN AMT3000 includes
neither of these circuits. The so called "Compressor/Limiter" used in the
SSTRAN AMT3000 is an RMS controlled AGC amplifier with a knee in its compression
curve. The RMS control means that it doesn't pay any attention to the peak
levels that cause over modulation. SSTRAN calls it a "Limiter" because of the
knee in the compression curve, but it fails to operate as expected of a limiter
to prevent over modulation.

--
Regards,

John Byrns

Surf my web pages at, http://fmamradios.com/

Peter Wieck a écrit :
On Aug 26, 6:10 pm, Syl wrote:
Peter Wieck a écrit :



For the money, and if you can get to Kutztown, I will have a
consignment of SSTRAN AMT3000 units. $80, including all taxes and with
the SMT chip already installed.
Peter,

That transmitter is NOT FCC part 15 compliant for what I know.

This would be misleading as the OP requests a part 15 transmitter
BCB.

Syls

From the website:



· Legal to use in the US, no FCC license required

· Fully compliant with FCC Part 15 regulations

· 100 mW input power

· 100% Modulation

· 20Hz to 20kHz ±1 dB Audio Response

· Very Low Distortion

· Adjustable Audio Compressor/Limiter

· 10 kHz and 9 kHz channel spacing options

· High Quality PC Board and Components

· Comprehensive Instruction Manual

This is a "HOME MADE" unit - which means that it must meet maximum
power radiation requirements, antenna developed length requirements
and various other regulations. EXACTLY the same as the Ramsey kit, the
AES kit, the L'il 7 Kit and any of several others.

What it is NOT is approved to be sold as a full-built unit.

Makes it Part 15 - compliant.

But, by removing the spaces, you can get chapter-and-verse from Phil
Bolyn at info at sstran dot com.

Peter Wieck
Melrose Park, PA

Hi Peter,

Thanks. Several of those specs do bring questions though as they aren't
properly defined (unless they are in the full FCC documentation ?

i.e.

a) Just what "very low distortion" means ? To me, very low distortion
would be 0,001% as a minimum. But I understand that in the real world
of transmitters, 0,1% is probably considered very low distortion figures
? This based on the presumption that attaining 0,001% distortion figures
is easier to attain than using tube technology. Correct me if I am wrong.

b) Adjustable compressor/limiter. To what levels ?

c) High Quality PC Board and Components. Does this means the
homebrewer can't use Chinese made parts [grin]

Of course I do not mean to start a discussion on these points,
merely thinking out loud...;o)

But...I now better understand the requirements for part 15. As It shows,
the only difference between a commercial unit and a homebrewer's is the
latter does not have to pay labs testing and approval for his
"concoction" whereas the former (the manufacturer) has to have the FCC
seal of approval and the of course the onerous fee(s) along with the
approval tag.

I wonder how the FCC manages the homebrewer's "concoctions", other
than reacting to complaint(s) ? I suspect this is what happened
to the kit builder whom got fined sometime ago ?

Syl