Re: 144MHz Gain block
If you want good linearity a good choice for a 2nd stage would be a HELA10B they have around 11 dB gain on 144MHz, so PGA103+ then HELA10B would work SV1AFN has kits.
From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> On Behalf Of Andy G4JNT
Sent: 22 November 2018 17:27
To: UK Microwaves groups.io <email@example.com>
Subject: [UKMicrowaves] 144MHz Gain block
I need a gain block to go from a little under 0dBm up to a bit over 27dBm or 500mW. This is needed to make my Elad FDM-DUO "look like" the FT817 for driving transverters.
But it's a very inconvenient gain arrangement to get using gain blocks
PGA-103 etc go to 50mW and needs the input attenuating. Then any discrete device after that has to be wound back so much it gets silly.
Meaning : Atten - Gain - Atten Gain
Is there an off the shelf solution to 27dB - 30dB gain up to 1 Watt output? Or will it have to be a pair of bipolars with old-fashioned discrete circuitry