Hello to all

There are all types of 'Part 15' transmissions, it all depends on the frequency you wish to broadcast on. Here are links to the FCC rules for specific frequencies:

PART 15--RADIO FREQUENCY DEVICES
http://www.access.gpo.gov/nara/cfr/waisidx_01/47cfr15_01.html

15.217 Operation in the band 160-190 kHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=217&YEAR=2001&TYPE=TEXT

15.219 Operation in the band 510-1705 kHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=219&YEAR=2001&TYPE=TEXT

15.221 Operation in the band 525-1705 kHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=221&YEAR=2001&TYPE=TEXT

15.223 Operation in the band 1.705-10 MHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=223&YEAR=2001&TYPE=TEXT

15.225 Operation within the band 13.553-13.567 MHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=225&YEAR=2001&TYPE=TEXT

15.227 Operation within the band 26.96-27.28 MHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=227&YEAR=2001&TYPE=TEXT

15.229 Operation within the band 40.66-40.70 MHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=229&YEAR=2001&TYPE=TEXT

15.231 Periodic operation in the band 40.66-40.70 MHz and above 70 MHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=231&YEAR=2001&TYPE=TEXT

15.233 Operation within the bands 43.71-44.49 MHz, 46.60-46.98 MHz, 48.75-49.51 MHz and 49.66-50.0 MHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=233&YEAR=2001&TYPE=TEXT

15.235 Operation within the band 49.82-49.90 MHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=235&YEAR=2001&TYPE=TEXT

15.237 Operation in the bands 72.0-73.0 MHz, 74.6-74.8 MHz and 75.2-76.0 MHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=237&YEAR=2001&TYPE=TEXT

15.239 Operation in the band 88-108 MHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=239&YEAR=2001&TYPE=TEXT

15.241 Operation in the band 174-216 MHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=241&YEAR=2001&TYPE=TEXT

15.242 Operation in the bands 174-216 MHz and 470-668 MHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=242&YEAR=2001&TYPE=TEXT

15.243 Operation in the band 890-940 MHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=243&YEAR=2001&TYPE=TEXT

15.245 Operation within the bands 902-928 MHz, 2435-2465 MHz, 5785-5815 MHz, 10500-10550 MHz, and 24075-24175 MHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=245&YEAR=2001&TYPE=TEXT

15.247 Operation within the bands 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=247&YEAR=2001&TYPE=TEXT

15.249 Operation within the bands 902-928 MHz, 2400-2483.5 MHz, 5725-5875 MHZ, and 24.0-24.25 GHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=249&YEAR=2001&TYPE=TEXT

15.251 Operation within the bands 2.9-3.26 GHz, 3.267-3.332 GHz, 3.339-3.3458 GHz, and 3.358-3.6 GHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=251&YEAR=2001&TYPE=TEXT

15.253 Operation within the bands 46.7-46.9 GHz and 76.0-77.0 GHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=253&YEAR=2001&TYPE=TEXT

15.255 Operation within the band 57-64 GHz.
http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=15&SECTION=255&YEAR=2001&TYPE=TEXT

--Chris ^_^

I thank you...very much...

Jerry -- There are 2 Part 15 "shortwave" bands:

1. A band 14 kHz wide and centered on 13.56 MHz. This is wide enough for one AM broadcast-quality signal (audio up to 7 kHz, so actually better), or two SSB signals with the same audio.

2. A band from 26.96 MHz to 27.28 MHz.

The limit in each band is signal strength. There is no "alternate" standard for limits in terms of input power, antenna length, etc. The 13.56 band has a much greater strength limit (15,848 uV/m at 30 meters) than the higher band (10,000 uV/m at 3 meters).

There's a topic on "Part 15 shortwave" currently on the second page (older topics) of the topic list. We (yours truly included) hashed over some things.

If you look at the current Page 2 of the Stations by Frequency list, 1570 WBDH started testing a Part 15 AM transmitter on 13.56 MHz. Unfortunately, their Web site has no updates on the tests.

Shameless Plug: This is also covered in the "Digest of Part 15" in the Library.

Thank you...I might do that sometime to do shortwave...