Showing posts with label norcal. Show all posts
Showing posts with label norcal. Show all posts

30 Mar 2013

Low cost signal generators for QRP

Elecraft's XG3 signal generator
Although I have a couple of (loaned from friends) signal generators, these are rather large in a small shack. There are times when something small but calibrated is useful. Elecraft sell the XG3 signal generator which can be PC programmed to give a number of fixed output levels on a wide range of HF, VHF and UHF frequencies. It is the same (small) size as the T1 auto ATU i.e. about the same size as a packet of cards.

The Norcal S9 signal generator
Norcal also sell a kit for a small fixed frequency signal generator called the S9 Signal generator that can provide a fairly well controlled range of output levels. Currently it is out of stock, but the circuit is simple and could easily be built from scratch "dead bug" style.


6 May 2010

Useful Simple Signal Generator

Dom Baines has a useful blogsite and today I noticed this NorCal circuit on his page for a multi-band S9/S1 signal generator. It uses a switched crystal oscillator with 2 well-defined output levels at 50uV and 1uV, so is ideal to test receivers.