Yep, pretty much a non-event.
Chuck
- Original Message -
From: "Joe"
To:
Sent: Saturday, November 28, 2009 9:42 AM
Subject: Re: [Repeater-Builder] Re: The GLB Preselector- Preamplifier
>I lived up in Rome NY for a couple of years when I was stationed at
> Griffis
I lived up in Rome NY for a couple of years when I was stationed at
Griffiss Air Force Base. Six inches of snow only got a brief comment
during the local weather cast. They considered it a "dusting".
73, Joe, K1ike
Chuck Kelsey wrote:
>
>
> Tonawanda doesn't get near as much snow as a bit fur
At 11/27/2009 18:19, you wrote:
>
> > >Yep, but the GLB trailing tuned circuits would also
> > >improve the realized GaAs Fet device equipped 3rd
> > >order performance... as would properly set cavities
> > >between a pre-amplifiers output and the receivers
> > >input.
> >
> > No, they don't. They
It comes down to "where are the IM products really being generated".
I think what Skipp is trying to say is that if the preamp generates spurious
products from overload that fall outside of the center frequency, that
filtering behind the preamp will help keep those products out of the
receiver.
Wh
> >The key is the manufactures data sheet for the device
> >and the completed pre-amplifiers real world measured
> >3rd order performance.
>
> This reply appears to be in the context of one designing
> their own preamp. I was thinking in terms of commercially
> available preamps.
So was I..
ubject: Re: [Repeater-Builder] Re: The GLB Preselector- Preamplifier
skipp025 wrote:
Smart guy... cumbersome type of duplexer that worked
fairly well. I survived living near Tonawanda NY in
Cheektowaga where snow is no fun.
Yes, Gil was a very smart guy - somewhat ahead of his time.
Here i
At 11/27/2009 15:27, you wrote:
> > Great! Too bad the manufacturer didn't do this;
> > would've saved you & others the trouble of having
> > to characterize a brand new component.
>
>I actually ended up verifying what another person on
>a similar path did before me.
>
> > I didn't miss that at
skipp025 wrote:
Smart guy... cumbersome type of duplexer that worked
fairly well. I survived living near Tonawanda NY in
Cheektowaga where snow is no fun.
Yes, Gil was a very smart guy - somewhat ahead of his time.
Here is the only information I can find (that is still available) about
his
Re: The GLB Preselector- Preamplifier
> Kevin Custer wrote:
> I bought several of these when they were first on
> the market.
I think enough of the GLB designs that I'd like to buy
anyone's used working or dead unit if they're not trying
to retire on the sale price.
> When this unit was f
> Great! Too bad the manufacturer didn't do this;
> would've saved you & others the trouble of having
> to characterize a brand new component.
I actually ended up verifying what another person on
a similar path did before me.
> I didn't miss that at all. You seem to be missing
> my poin
FWIW the BF981 is a dual-gate MOSFET, not a GaAsFET. I assume Aria
switched to a GaAsFET for the current-production unit?
Bob NO6B
I bought several of these when they were first on the market.
When this unit was first in production from Gil, he made it available
like this:
Under 200 MHz
At 11/27/2009 13:08, you wrote:
> > >Yes, if it's composite performance includes very
> > >good/great 3r Order Intercept Performance.
>
> > ...but the P1dB for the GLB isn't given, so we don't
> > have that either. How do we know (other than anecdotally)
> > what the 3rd order intercept performan
> >Yes, if it's composite performance includes very
> >good/great 3r Order Intercept Performance.
> ...but the P1dB for the GLB isn't given, so we don't
> have that either. How do we know (other than anecdotally)
> what the 3rd order intercept performance of the GLB
> within its passband is?
At 11/27/2009 08:35, you wrote:
>Re: The GLB Preselector- Preamplifier
>
> > I think we've covered this before, but I'll say it
> > again: the noise figure spec, the most important spec
> > on any preamp, is missing! Would you buy a power
> > amplifier that only spec'd "10 dB gain"?
>
>Yes, if i
Re: The GLB Preselector- Preamplifier
> I think we've covered this before, but I'll say it
> again: the noise figure spec, the most important spec
> on any preamp, is missing! Would you buy a power
> amplifier that only spec'd "10 dB gain"?
Yes, if it's composite performance includes very
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