"jy" wrote in message
oups.com...
Hi, I have acquired a SML SWR-25.

It does not have a forward/ref switch.

Can anybody tell me how to use it?

It is the same as this one in this picture.

http://cgi.ebay.co.uk/SML-SWR-25-SWR...ayphotohosting

Thanks
Jim


You should have a calibration chart for it as the knob in the middle is used
for setting the calibration of frequency /power. Example: If you are using
it on 11meters and you know what wattage your radio puts out, adjust the
knob for that wattage and it will give you the swr.