[Elecraft] Signal Generator

Geoffrey Mackenzie-Kennedy gmk at gm4esd.fsworld.co.uk
Wed Apr 25 14:26:11 EDT 2007


Al,

I cannot comment offhand about any low cost commercial signal signal 
generator that would suit your requirements, but if you are prepared to 
homebrew there are many low cost options. If you did
homebrew and if you needed to know the output level from the generator when 
using it, you would need to measure RF voltage with good accuracy when 
calibrating the generator feeding a 50 ohm load. Also I would suggest in 
this case that you purchase rather than build a step attenuator capable of 
introducing at least 60db of attenuation. It is possible to build a good 
step attenuator, but you would require
good test equipment to check its performance, also its enclosure and its 
internal shielding partitions have to be built in addition to the 
'electronics'.

On the other hand if you only require a generator which can produce a stable 
but tuneable unmodulated carrier in the 40 - 15m bands, and you are not 
interested in the actual value of its output level (which could be adjusted 
during use), a homebrewed generator can be very simple. Other than a 
receiver with frequency readout test equipment is not essential, although 
having a DMM is a good idea.

Please contact me off-list if you would like to discuss this further.

73,
Geoff
GM4ESD


----- Original Message ----- 
From: "Al & Dianne Bruce" <dabruce at smnet.net>
To: <elecraft at mailman.qth.net>
Sent: Wednesday, April 25, 2007 6:24 AM
Subject: [Elecraft] Signal Generator


> Good morning folks !  I am looking for a signal generator that outputs 
> signals across the frequencies of the 15-40 band, and does not cost an arm 
> and a leg. Need your advice, does such a creature exist?
> 
> Al




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