Output Attenuator

Introduction

It is possible to add a programmable output level attenuator to the Portsdown transmitter. As of software version 201801061, the output attenuator can be used to adjust the output level of the Portsdown Signal Generator. It is planned that a future software version will allow programmable output levels to be set for each band (and possibly for additional transverter outputs).

Attenuator Types

Attenuators based on the PE4302, HMC1119 or PE43703 (preferred) are supported. The PE4302 and PE43703 types are readily available on eBay for under £20. The preferred type is the PE43073 illustrated here:

Data sheets are available at these links: