the amplifier is class "AB" and is 8 mosfet transistors beautifuly engeneered
to split and combine the power inside the amp...there are impedance balancing
ciquits to keep the power properly distributed from the input amplfied and
outputted to the duplexer or site combiner. now this amp runs far bellow it's
capabilities just for the sake of the distortions that can occure from
amplfying...moreover there is error ellimminating computer for the input signal
just for the sake of linearity and error and distortion free output from this
beast! yo know that this is important for digital communication
i am using it at it's power capabilities because is analog and does not matter
the errors if the carrier that is carring my vice and the TPL.
--- In Repeater-Builder@yahoogroups.com, Joe <k1ike_m...@...> wrote:
>
> Your saying that you took a 90 watt amp and "modified" it to 450 watts?
> This does not sound believable.......
>
> The amp you have is possibly a B band analog amp. 90 watts may have
> been used at the cell site to overcome the combining losses that are
> involved in putting multiple transmitters on a single cellular antenna.
> The ERP would probably have still been around 100 watts. You have to
> have a balance between the cell site transmit power and the cellphone
> transmit power to make the system work.
>
> The paging industry used ERP upwards to 2KW or more to talk to a pager,
> but that was usually a one-way transmission.
>
> Joe
>
> Joe
>
>
> On 4/25/2010 4:08 PM, George wrote:
> > well this amplifier is rated 90 watts you can see it on e-bay just type
> > powerwave in the search. it has error eliminating computer inside and no
> > distortion what so ever. i have it "modified" and use it at 450 watts and i
> > pushed it with two power supplys that can put more than 120 ampers at 24
> > volts. the antenna is rated at 500 watts...
> > i wonder why woud they do that...just to put out 5 watts?
> >
> >
> .
>
