There are a number of projects currently being developed including replacement 2 and 6M band masthead amplifiers and the much anticipated 70cm and 23cm masthead amplifiers. Its been difficult to source suitable relays for the 70/23cm preamps that can handle up to 100watts SSB and also have enough isolation. The Axicom HF353 relay has been chosen as it is a good compromise on performance and cost so will be used on a prototype for testing. I will also do tests with the PGA103 and other low noise high dynamic range amplifiers, although it does make it difficult to add a low loss tuned input circuit for out of band rejection to 50ohm input amplifiers.
Mediclinic Middle East - Mediclinic Middle East 2018-06-07 08:00
Mediclinic Middle East
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Photos from Ferrari's post - Ferrari 2018-06-06 12:05
Photos from Holidaypirates.com's post - Holidaypirates.com 2018-06-06 12:04
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