On 28/11/2016 7:04 AM, Steve L wrote: In Australia, any mode is allowed for Standard and Advanced licensees (Foundation are limited to AM, FM, SSB and CW on 70cm), as long as the bandwidth does not exceed the specified limit. On 433 MHz, that is 16 kHz for Standard and the whole 70cm band for Advanced, so in effect, Advanced licensees could run spread spectrum. As for encryption, the actual wording is "encoded to obscure the meaning", encryption is allowed under the following conditions: Control of an amateur satellite station (only useful for OSCAR ground stations :) ) Control of another amateur station (so I could run SSH over IP/AX.25 to control a remote base). Emergency communication or emergency communication training exercises (As a member of WICEN, it is conceivable I may use this provision too). Scrambling as part of a protocol is not considered encryption, unless the intent is to keep the communication secret. If encryption is an untended side effect of a configuration (conceivable with spread spectrum), then the keys/settings used would need to be published somewhere, I would imagine, though this is where my knowledge runs out. -- 73 de Tony VK3JED/VK3IRL http://vkradio.com