Do you think a 70cm amateur amp will work on 462mhz-468mhz without much of a power drop or work at all? Its only 18khz higher. Other than possible bandpass filter problems it should work right?
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450mhz Amp on 468mhz
- Thread starter RADIO51
- Start date
18 Mhz higher, depends on the linearamp schematic widebanded in/outputs or if i has trimmers it will be more narrow band and you have to trim it to the new frequency.
Why not pop the cover and monitor the temperature of the transistors at the designed frequency and then bump it up to 468 and monitor again. It it starts getting hot compared to the baseline temp curve, quit. One thing is for sure, if it shouldn't be done, there will be a mismatch at the transistor, and if that mismatch is bad enough, a finger on the transistor will let you know.
Maybe you could use an RF voltmeter and see what the RF voltage is at the transistor at its designed frequency (into a 50Ω load of course, not the 468MHz antenna) and then switch over to 468 and tinker with the matching network until you get the same RF voltage as you did at 450...
You can always put the smoke back in...
Maybe you could use an RF voltmeter and see what the RF voltage is at the transistor at its designed frequency (into a 50Ω load of course, not the 468MHz antenna) and then switch over to 468 and tinker with the matching network until you get the same RF voltage as you did at 450...
You can always put the smoke back in...
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