SIGNAL METER
This short article describes how a very useful signal meter can be added to the Lowe HF150 (or any other communications receiver that lacks a signal meter for that matter). The circuit design of the S meter described here is the one employed by Lowe themselves in their add-on audio-filter and S meter unit and is easy to construct and reliable in operation.The input to the meter consists of a simply connection to the AGC line within the receiver - which does require a very minor modification described later.
   SIGNAL METER
For more detail SIGNAL METER website
www.arar93.dsl.pipex.com