QRP 5W HF linear amp transistors and design
Thanks all
I will investigate the CB transistors
R
Richard Hosking wrote:
Dear all
I want to build a power amp for SSB HF 1.5-30 MHz
Specs
approx 5W out
Cheap/easy to source components
Surface Mount parts/small
Rugged/stable into any/most loads
Gain around 40 dB
Flat gain to 1 dB or so
Thought I would do something like
Class A MMBT2222 - 2X push pull MMBT2222 - finals push pull balanced
What to do for the finals?
I looked at the PD55003 RF MOSFETS - can you get these easily?
Will they work down to HF?
What other issues?
What about transformers?
Is this a practical proposition?
I havent seen any similar designs
I would be grateful for some pointers
Thanks
Richard
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