[Alexandria Radio Club Reflector] FM amplifiers

[Ian]

Well, I stand corrected.  Apparently the BTECH digital amps do pass DMR
signals.  Just don't use a non-digital version with DMR.
73, Ian N8IK


On Fri, May 24, 2024 at 2:29 PM Ian <iann8ik at gmail.com> wrote:

> With the departure of MFJ from the ham market, Mirage amplifiers may no
> longer be an option.  Howie WA9HS found this 220 MHz amp for a good price:
> https://www.amazon.com/BTECH-AMP-220-Amplifier-220-225MHz-Compatible/dp/B07B35QVP4/.
> Nice way to boost a Kenwood D74/D75 or other 220-capable handheld.
> Notice on that page that BTECH offers a 'digital' version for VHF or UHF
> for more dollars.  Not sure what the 'digital' gets you because a Mirage FM
> amp passes DSTAR and C4FM signals just fine - been there, done that.  But
> it's safe to assume that 'digital' does NOT mean DMR-compatible.  Outboard
> amplifiers do not work with DMR radios because of the 30ms time slotting
> inherent in DMR.  The PIN diodes in the amp would not last long trying to
> keep up with DMR.
>
> 73, Ian N8IK
>
>