Inovonics 531 FM Modulation Analyzer (CLONE)

Everything technical about radio can be discussed here, whether it's transmitting or receiving. Guides, charts, diagrams, etc. are all welcome.
Albert H
proppa neck!
proppa neck!
Posts: 3088
Joined: Tue Apr 05, 2016 1:23 am

Re: Inovonics 531 FM Modulation Analyzer (CLONE)

Post by Albert H » Fri Oct 10, 2025 12:25 am

BodoRF wrote: Thu Oct 09, 2025 2:52 pm Since the experiment of cloning the 718 and 531 was interpreted by Inovonics as a possible copyright infringement, and they were concerned that I might sell these devices — although I never had such an intention — I decided to remove the related posts and additional files.

Regards.
That's ridiculous. I'll tell them so!
"Why is my rig humming?"
"Because it doesn't know the words!"
;)

Albert H
proppa neck!
proppa neck!
Posts: 3088
Joined: Tue Apr 05, 2016 1:23 am

Re: Inovonics 531 FM Modulation Analyzer (CLONE)

Post by Albert H » Fri Oct 10, 2025 12:27 am

reverend wrote: Fri Sep 05, 2025 2:12 pm Agree with the above - really really nice work.

It's difficult to get hold of a decent modulation analyser at a sensible price. I did manage to get a copy of the old Breakaway Broadcast software based modulation analyser which can be used with an SDR dongle for off-air reception but it seems this is no longer available and I don't have the installation files any more.
I still use my old Marconi TF2300 Mod Meter!
"Why is my rig humming?"
"Because it doesn't know the words!"
;)

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