[amsat-bb] Re: MGF1402 source or substitute
G0MRF at aol.com
Tue Jan 2 15:41:08 PST 2007
Reading the articles, I see that the author of the original article in The
Netherlands and OZ1PIF have both produced PCBs for the design. It may be
worth an e-mail to them both to find out the current situation. - But I get the
impression they are now out of stock
If they have sold out, then you may be able to take the PCB for my 70 and
23CM version and adapt it for their 2m design. A quick look suggests that the
biasing is similar although the input circuit is different. I did try a 2m
version about a year ago, but the foil trimmers I used caused instability. A
decent piston type trimmer as used by OZ1PIF would be a much better choice.
The 0.8mm FR4 board design and details of the G0MRF 70cm amp can be found at:
In a message dated 1/2/2007 5:14:09 PM GMT Standard Time, iz5dwf at amsat.org
Hello David & group
On Tue, 2 Jan 2007 G0MRF at aol.com wrote:
> Hi Tyler.
> The MGF1402 is an expensive option these days.
> You may want to have a look at this 2m design which will give you 0.3 to
> 0.4dB noise figure.
very interesting! Do you know if someone is still selling the pcb for it?
73 es hny
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