This is done using the Hex-edit Method which works for many CPS distributions, and detailed information can be found on the information page.Īll Astro25 radios excluding the Astro Spectra Plus will tune to all frequencies in the amateur bands without issues. If you have a radio whose bandsplit is outside the amateur bands (a UHF-R2 'S'-split radio for the 450-520 MHz band would be an example) you must modify the CPS executable to allow the software to accept frequencies which are out of band for the model. Astro25 Mobile CPS supports the Astro Spectra Plus, XTL1500, XTL2500, and XTL5000. The portable version of CPS supports the XTS2500, XTS4000, and XTS5000. These audio settings can be found in the Radio Configuration -> Radio-Wide -> Tx Audio Control Per Mode section of CPS.Īstro25 radios program using the Astro25 Portable and Mobile CPS Packages. However, as found through testing and tweaking by members of communications.support, there exists a much better setting for Astro25 radios that can make the transmitted audio from these units sound even better. The default settings are fine, and most people will have no complaints with the quality of audio from these radios. The latest firmware (as of ) is R20.50.08 for 8-meg BN radios and R09.00.41 for 4-meg AN radios.Īnalog and digital audio is processed by the audio DSP before it is sent through the RF section and transmitted. Earlier models of the XTS2500 and the Astro Spectra Plus are considered AN radios and are limited to the firmware version specified below. Several radios in the Astro25 line are considered 'AN' or '4-meg' radios and contain a smaller flash rom chip (4 megabyte vs 8 megabyte) and are more limited in firmware and feature support.

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