With a gain of approximately 16dB, it could have about 67 watts going into a
shunting resistor and still get 1KW out of a pair with a 100 watt transceiver.
I think this is similiar to the way they do it on the the Ameritron ALS-600 by
looking at the size of the input resistor on that amp. The 5400pF is a rating
at 1mhz. Further down the spec sheet they have input impedances for 2,13.5,
27, 40 mhz and they look to be substantially different with ratings that are
shunted by a 25ohm input resistor. I am calling the company tonight for more
information as they do advertise it for broadband HF amplifiers on the news
release from a few years ago.
73,
Mike
Steve Thompson <g8gsq@eltac.co.uk> wrote:
mike kendall wrote:
> I have seen interest in the past for a 1kw solid state amp on this link and
> also for other solid state amps.
> Possibly a group effort to build such an amp from two ARF1505's and document
> it?
> Mike KE6CVH and JA6WIY while stationed here in Japan
>
> "m.ford" wrote:
>
> ----- Original Message -----
> From: "mike kendall"
> To:
> Sent: Wednesday, July 05, 2006 11:45 AM
> Subject:
>
>
>>Hello,
>>I have been looking at the Advanced Power Technologies, now owned by
>>Microsemi, ARF1505 power MOSFET. It does
>>750watts power output and requires 300VDC. They have app notes and it claims
>>to be easier to match than the 48vdc
>>supply Motorola devices.
On the output perhaps. 5000pF Cin will make broadband input matching
very interesting!
Steve
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