thank you for the understanding! no offence of any kind here takeing or giving! transistors are bipolar and made by mother motorola 8o watts capable each 8X80=640 watts pure power PEP ofcource the lifespan will be short if the supply is 27 volts and the consimption is 80-90 ampers that is impossible to me...so the driving input is 130-140 watts the supply is 24 volts and the consumption is less than 60 ampers...purring like a kitten. the result is satisfying and the duplexer is happy with the power inputed to it.
--- In [email protected], "Gary Schafer" <gascha...@...> wrote: > > I am not saying that you are misleading anyone. I am just pointing out to > all that the amplifier, if intended for multiple low power transmitter > amplification, is indeed capable of rather high power output. > > 500 watts PEP output with multiple transmitters fed to it is certainly > capable of 500 watts carrier output with a single transmitter. > > 73 > Gary K4FMX > > > -----Original Message----- > > From: [email protected] [mailto:Repeater- > > [email protected]] On Behalf Of George > > Sent: Sunday, April 25, 2010 7:19 PM > > To: [email protected] > > Subject: [Repeater-Builder] Re: how far > > > > i am using BIRD watt meater with 1000 watt slug and i am not > > misdirectioning anybody > > > > --- In [email protected], "Gary Schafer" <gaschafer@> > > wrote: > > > > > > It sounds like you have a "linear" amplifier. Linear amplifiers are > > used > > > when multiple low power transmitters are to be amplified by one > > amplifier. > > > The peak power (actually peak envelope power) capability of the > > amplifier > > > must be quite high in order to handle the multiple signals without > > > generating intermodultion distortion. > > > > > > The peak envelope power increases by the square of the number of > > signals > > > going into the amp. N^2 * power > > > > > > Example: two 5 watt signals into the amplifier have a peak envelope > > power of > > > 20 watts. Three have a PEP of 45 watts. Ten 5 watt signals works out > > to a > > > PEP of 500 watts. (10^2 = 100*5 watts = 500 watts pep) > > > > > > So if you have ten 5 watt transmitters fed into the amplifier the > > amplifier > > > must be capable of 500 watts PEP. > > > > > > 73 > > > Gary K4FMX > > > > > > > > > > -----Original Message----- > > > > From: [email protected] [mailto:Repeater- > > > > [email protected]] On Behalf Of George > > > > Sent: Sunday, April 25, 2010 4:08 PM > > > > To: [email protected] > > > > Subject: [Repeater-Builder] Re: how far > > > > > > > > > > > > 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? > > > > > > > > > > > > --- In [email protected], Joe <k1ike_mail@> wrote: > > > > > > > > > > The typical cell site is probably running a 10 watt amplifier with > > an > > > > > ERP of about 100 watts. City sites probably a lot less power. > > Your > > > > in > > > > > the high power paging transmitter class. Physical damage can be > > done > > > > in > > > > > the nearby horizontal field of the antenna using this much power > > and > > > > > antenna gain. > > > > > > > > > > Joe > > > > > > > > > > On 4/25/2010 3:13 PM, George wrote: > > > > > > what do you mean...a cell site in the city radiates much more > > times > > > > than my antenna, its on the same level and shoots directly in > > peoples > > > > houses... > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------ > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------ > > > > > > > > Yahoo! Groups Links > > > > > > >
