[Amps] RE: Amps digest, Vol 1 #340 - 18 msgs

[Steve Thompson]

On Wednesday 16 October 2002 16:22, David Robinson wrote:
> Basically it was done as per wb2wik's posted note.
>
> The EB104 4xMRF150 was built as per moto app note and the CCI sheets, with
> their copper spreader. This was then mounted on a big heatsink with 2 24V
> blowers at each end. A metal box was then created over the amp. I
> incorporated overtemp shutdown, high vswr shutdown and eventually overdrive
> shutdown (to protect against not setting the Ft1000MP to 10W o/p and
> hitting it with 100W)
>
> There is a dunestar multi band BPF on the input (you will need it anyway to
> protect the rx in a multi tx environment). Externally on the output i use
> either a homemade 10MHz 1kW LPF when operating LF or a commercial 35MHz LPF
> when on the upperbands. The measured output spectrum exceeds FCC
> requirements.
What were the 3rd harmonic levels on 160m and 80m?

Thanks

Steve