Zdravo,
naleteo sam na clanak u kojem je opisano na koji nacin se moze izmeniti RT3 da bi se dobila malo bolja modulacija.
Zanima me da li je neko ovo radio i kakvi su rezultati? Citiracu ovde tekst iz clanka jer je na mods.dk a tamo je limit na jedan post na dan.
"After having a look into the schematic I gladly recognized that the MD-380 has a mic compressor, or let’s better say a 2-stages mic amp limiter. This I only know from the WOUXUN KG-UVxD yet and they sound very good and are never overmodulated or distorted. With slight mods they run even better with a powerful FM modulation."
"By increasing the bias resistor of the electret capsule audio dynamics come alive.
On the other side the mic compressor timing is a little too fast which causes a little “rough sounding†audio on each limited peak. So I slowed down the 2-stage mic limiter a little bit which ends up in a good compression and the rough audio effect has gone. The mic compressor is still very fast and does not have the typical pumping effect or slow release on the decay period."
Link na original: http://www.mods.dk/view.php?ArticleKey=3193963b0f61da614fba0d7e9a92ecb8&i=Other-MISC-Mod-for-TYTERA-MD-380-RETEVIS-RT3-DMR-handheld (http://www.mods.dk/view.php?ArticleKey=3193963b0f61da614fba0d7e9a92ecb8&i=Other-MISC-Mod-for-TYTERA-MD-380-RETEVIS-RT3-DMR-handheld)
Original RT3 audio: https://www.youtube.com/watch?v=QKON0OOFYro (https://www.youtube.com/watch?v=QKON0OOFYro)
Nakon modifikaije: https://www.youtube.com/watch?v=nHFDsMLC9FI (https://www.youtube.com/watch?v=nHFDsMLC9FI)
Probaćemo ove nedelje, pa javljamo rezultate :)
Hvala!
Probao bih i sam, samo nisam siguran da bih mogao obicnom lemilicom da zamenim SMD komponente. A i trebalo bi poruciti nemam nista SMD ::D
Jeste li radili modifikacije i kakvu su rezultati?
Nakon ubacivanja eksperimentalnog firmvera modulacija je sasvim OK po svim raportina, plus "gain" mikrofona se može podešavati iz menija, a ima i opcija da se vidi na ekranu kako ide jačina tona u mikrofonu...