JUMA Amateur Radio Forum

Hi Rick,

Please find a version according to Japanese portable regulation.
Enjoy with WSPR mode.

73, Patrick F4GCB

Hi Mori, In reply to your first post : 1) The jumper J4 must be installed because the power switch is software controlled. You should use the boot loader method which is easier than the PICkit 3 tool to upload the firmware to the TX500. See http://www.jumaradio.com/juma-trx2/bootloader/JUMA_Boot_Loa...

Hi Mori, Thanks for your feedback. I appreciate to know that the WSPR mode works in TX500. Indeed the problem is due to a bug in the firmware. The call, grid and power are stored in eeprom, not the WSPR message. The WSPR message is performed only with a long OPER button push. Therefore after an auto...

Hi Rick,

Thanks for information about Japanese portable regulation.
For the (probable) next TX500/136 program release I'll plan a limited power version more than standard version.

Less than 2 months before using your TX500. Patience and good working on 630m

73, Patrick F4GCB

Hi Rick, Many thanks for your feedback. Following your demand please find the version 1.05b according with the portable regulation in Japan. I could add a power limitation setting in the configuration menu for a next TX500/136 version. Would this setting be satisfactory with portable regulation in J...

Hello,

I have been too quick to write the WSPR user’s guide and this last is incomplete.
This new version corrects the mistake.

73, Patrick F4GCB

Hello the TX136/500 builders, WSPR is a very interesting mode for 2200 and 630 meters bands. So thanks to the K1JT WSPR source code, the G4JNT algorithm description and the W3PM source code examples, it has been relatively easy to add the WSPR modes in the TX136/500 software. The result of this work...

Hello the TX136/500 builders, Many thanks to Juha and Matti for the great quality of their kits. In addition to the hardware efficient design, the open access to the source code is a real temptation. Also during a wet summer in France, I enjoyed to do modest improvements on the TX136/500 software. T...