All Questions
7
questions
3
votes
2
answers
264
views
Can someone without privileges on a band operate FT8 on it using the callsign of a ham who does and is present?
I have an Extra license. Is it legal for my dad (who has a Technician license) or my mom (who is not licensed) to operate FT8 on 20 meters using my call sign, if I am physically present at the control ...
- 604
3
votes
1
answer
84
views
Digital networks -- operator at control point, or automatic relay?
I've recently (part of studying for Extra license exam) learned about "mesh networks", where it's common to use repurposed wifi routers to connect at 2.4 or 4.8 GHz and form a network over a much ...
- 4,147
1
vote
1
answer
73
views
Sending a downloaded file on digital: third party communication?
This came up in comments on this question.
Since before the Internet was widely available, it's been common to pass along files received from other users or downloaded from a server somewhere. For ...
- 4,147
5
votes
3
answers
594
views
Is compression "encryption" under FCC regs?
I read this question about digital signatures and FCC prohibitions on "obscuring" messages in amateur transmissions, and it cause me to think of something: the difference between encryption and ...
- 4,147
10
votes
2
answers
4k
views
Do FCC regulations limit digital data rate?
Are there FCC regulations that specifically limit digital data rate on the amateur bands? Are there any recent or proposed changes? If so, what are they specifically?
7
votes
1
answer
3k
views
Is there a legal limit to the bandwidth of a signal used in the amateur bands?
While a normal voice channel is ~10kHz-15kHz in bandwidth, some digital modes can be significantly wider.
Are there any legal restrictions on how much bandwidth I could use for amateur radio ...
- 170
5
votes
5
answers
2k
views
What about the digital mode ROS causes some to consider it spread spectrum?
The FCC disallows amateur spread spectrum communications below 220MHz. At the moment the relatively new digital mode, ROS, is considered, by some, to be spread spectrum. So this mode is getting ...
- 12.2k