[Amps] Future of RF AMPS

[Roger (K8RI)]

On 9/10/2013 11:13 PM, Leigh Turner wrote:
>
> Larry, the RF power MOSFETS to which I refer here are the VRF2933 devices
> from Microsemi. Sometimes one can find surplus and NOS ST Micro SD2933 FETS
> on eBay at low prices.

I've worked with semiconductors, since we've had semiconductor and in 
the industry until 87.  However, I have zilch for high power SS except 
for repairing a few.

Looking at these devices, I'd expect to use 8  for a saturated output of 
2400 watts, so I could back off along with a bit of negative feed back 
for a clean 1500 to 2000 watts all day long.

I know this would make the splitters and combiners more complicated, but 
that's about the extent of my knowledge, whether right or wrong.

I have so many projects going right now, I just hope to get the LM470 up 
along with the antennas that go on it and the 100' 45G before cold 
weather sets in.

73

Roger (K8RI)
>
> 4 of these rugged 300 Watt rated devices in parallel/push-pull will yield a
> saturated output power of well over 1200 Watts.  Six will comfortably yield
> over the US legal limit.
>
> 73
>
> Leigh
> VK5KLT
>
> -----Original Message-----
> From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Larry
> Sent: Wednesday, 11 September 2013 10:48 AM
> To: amps at contesting.com
> Subject: Re: [Amps] Future of RF AMPS
>
> On 10-Sep-13 5:51 PM, Leigh Turner wrote: using a readily available
> multiplicity (6 devices in parallel/push-pull) of cheap 50V MOSFETS sourced
> from the surplus market.
>
>
> Leigh,
>
> Exactly which cheap MOSFETS from what surplus market are you speaking of?
>
> Larry - W7IUV
>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>
>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>