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MSCC-PW allows transmit near but outside ham band frequency allocations. #26

Closed Bob-TX closed 1 year ago

Bob-TX commented 1 year ago

Describe the bug MSCC-PW will allow transmitting CW on frequencies outside the FCC allocated US amateur radio bands. Please review the possible transmit frequency ranges to prevent possible illegal transmissions.

To Reproduce Steps to reproduce the behavior:

  1. Attach a transmitter dummy load and RF output meter to the transceiver. Adjust the HAM band to 160m and vary the MAIN tab frequency across the 1790 kHz to 1800 kHz range.
  2. Select CW mode and momentarily select PTT and note RF output exists on 1792 through 1800 kHz frequencies.
  3. Perform a second test while adjusting the MAIN tab frequency across the 2000 to 2025 kHz range.
  4. Select CW mode and momentarily select PTT and note RF output exists on 2000 through 2022 kHz frequencies.
  5. Note that US Amateur Radio Band frequency allocations for 160 meters are 1800 to 2000 kHz per chart at https://www.arrl.org/files/file/Regulatory/Band%20Chart/Band%20Chart%208_5%20X%2011%20Color.pdf
  6. A similar condition exists below and above the 80 meter HAM band frequency allocation.
  7. Note that the small red square that appears between the 10 kHz and 1 kHz digits in the VFO window of the MAIN tab in MSCC-PW does NOT indicate that transmit output is enabled or disabled. The red square does appear when frequencies outside the allocated ham band are tuned however the radio still produces transmit RF output until the tuning is adjusted significantly MORE outside the ham band range.
  8. Please check all ham bands for these or similar symptoms.

Expected behavior Transmit RF output should be disabled when selected frequency is NOT within US Amateur Radio frequency allocation.

I expected the red square in the VFO window on the main tab to indicate when a non-ham frequency was tuned AND the transmit function was disabled.

MSCC-PW release date (please complete the following information): MSCC-PW-Install-20221124.exe

Desktop (please complete the following information):

Additional context These symptoms exist without BETA TEST or TRANSVERTER boxes checked on the SYSTEM tab. I understand the TRANSVERTER function will allow transmit above 29.7 MHz up to 30 MHz for use with transverters.

Thank you!

w4mmp commented 1 year ago

Hi Bob, I will make a change MSCC-PW to disable TX when out of band. However, please remember that you as the control operator have the finial responsibility to operate your station in a manor consistent with your operating privileges and within the FCC rules and regulations.

w4mmp commented 1 year ago

Hi Bob, I have made a change to MSCC_PW to prevent out of band transmission. A new release will be available in a day or two. 73, Ron

Bob-TX commented 1 year ago

Thank you, Ron. I'll continue the operators guide & checking for issues as I get time.

Merry Christmas to you & your family.

Bob

On Sun, Dec 11, 2022, 10:51 PM W4MMP @.***> wrote:

Hi Bob, I have made a change to MSCC_PW to prevent out of band transmission. A new release will be available in a day or two. 73, Ron

— Reply to this email directly, view it on GitHub https://github.com/w4mmp/MSCC-PW/issues/26#issuecomment-1345872682, or unsubscribe https://github.com/notifications/unsubscribe-auth/A23AEIZQTFUHAUDXG4DJJELWM2VOFANCNFSM6AAAAAASTAY6XU . You are receiving this because you authored the thread.Message ID: @.***>

w4mmp commented 1 year ago

Hi Bob, MSCC-PW-Install-20221215.exe has been release. Merry Christmas and may God Bless you.

Bob-TX commented 1 year ago

Thanks, Ron.

I'll check it out.

Merry Christmas to you & yours,

Bob

On Thu, Dec 15, 2022, 11:31 AM W4MMP @.***> wrote:

Hi Bob, MSCC-PW-Install-20221215.exe has been release. Merry Christmas and may God Bless you.

— Reply to this email directly, view it on GitHub https://github.com/w4mmp/MSCC-PW/issues/26#issuecomment-1353458629, or unsubscribe https://github.com/notifications/unsubscribe-auth/A23AEIZVOZFTUAUXOYJPV73WNNIVZANCNFSM6AAAAAASTAY6XU . You are receiving this because you authored the thread.Message ID: @.***>

Bob-TX commented 1 year ago

Ron, Please adjust the upper frequency limit for transmitting CW on the 60 Meter band to allow Channel 5 - 5405.0 kHz. See .PDF file at https://www.arrl.org/files/file/Regulatory/Recommended_Practices_Version_6_5.pdf for details. The FCC regulations for 60 Meters specify five channels with different exact frequencies depending upon mode of transmission. The current version of MSCC-PW (Jan 2023) won't allow CW operation on channel 5. Thanks, Bob, AF5Z