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'[EE]: Mystery Amplifier Inquiry'
2001\06\01@212724 by Jess Hancock

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Sorry about the previous empty post.

Can anyone identify the following amplifier:

Lunar Industries, Inc.
VHF 25-100 PG
Solid State Linearized Amplifier
The Quiet Difference in Communications
San Diego, CA

It has a switch for either FM or SSB and an estimated power output
capability of 50-150 watts.

Would like to know the frequency range and input/output power ratings.  Also
anywhere to get documentation?

Thanks

Jess, w4pqk

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2001\06\02@045303 by Chris Carr

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Lunar Industries Inc
7966 Arjons Drive #102
San Diego, CA 92126-6361
Phone          800-205-8627
Fax                619-549-2346

Contact          Allistar MacCabe, Pres. & CEO

It is possibly designed to be operational on TV Broadcast Frequencies

Regards
Chris Carr

{Original Message removed}

2001\06\02@100904 by michael brown

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Maybe this will help???

Alistair MacCabe
President & Chief Executive Officer
Lunar Industries, Inc.
7966 Arjons Drive, Suite 102
San Diego, CA 92126-6361
(619) 549-9555
(619) 549-2346 (fax)
Founded: 1980
Business: Satellite equipment provider
# of employees: 5



Michael Brown
Instant Net Solutions
http://www.KillerPCs.net

{Original Message removed}

2001\06\04@131212 by Barry Gershenfeld

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>Lunar Industries Inc
>It is possibly designed to be operational on TV Broadcast Frequencies
>Regards
>Chris Carr

I'm not sure why you said "TV" but maybe you read some additional
information.  Now since the model said "VHF" my answer would
be "VHF"...but a little further info...the company was started
by an avid moonbounce enthusiast which kind of suggests 432 MHz.
I was involved with some amateur TV which was around 434 MHz and
that required an amplifier with a linear mode so they may have
been able to use this one there too.

Of course, a lot of solid state amplifier designs were pretty
broad band so it's likely it covers a lot more.   25/100 sounds
like the power you'd get in classB/classC mode.

Barry wa2qmi

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2001\06\04@132442 by David VanHorn
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At 10:03 AM 6/4/01 -0700, Barry Gershenfeld wrote:
> >Lunar Industries Inc
> >It is possibly designed to be operational on TV Broadcast Frequencies
> >Regards
> >Chris Carr
>
>I'm not sure why you said "TV" but maybe you read some additional
>information.  Now since the model said "VHF" my answer would
>be "VHF"...but a little further info...the company was started
>by an avid moonbounce enthusiast which kind of suggests 432 MHz.
>I was involved with some amateur TV which was around 434 MHz and
>that required an amplifier with a linear mode so they may have
>been able to use this one there too.

In a ham context, VHF means 144-148  If it were 430, it would be labelled "UHF"


>Of course, a lot of solid state amplifier designs were pretty
>broad band so it's likely it covers a lot more.   25/100 sounds
>like the power you'd get in classB/classC mode.

Typically, they are rated with input/output power.

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2001\06\04@140447 by James Paul

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Barry,

But 432 Mhz is UHF not VHF.

                 Regards,

                   Jim




On Mon, 04 June 2001, Barry Gershenfeld wrote:

{Quote hidden}

.....jimKILLspamspam.....jpes.com

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2001\06\04@152732 by michael brown

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----- Original Message -----
From: "David VanHorn" <dvanhornspamspam_OUTCEDAR.NET>
To: <@spam@PICLISTKILLspamspamMITVMA.MIT.EDU>
Sent: Monday, June 04, 2001 12:22 PM
Subject: Re: [EE]: Mystery Amplifier Inquiry


{Quote hidden}

"UHF"

Well.....I beg to differ on this.  Anything above 50 Mhz is considered VHF.
(actually anything 'above' 49.99999 rpt, however some people will insist
this is the same thing ;-D  The FCC says: NOT)

michael (N5QMG)

{Quote hidden}

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2001\06\04@154952 by Bob Barr

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michael brown wrote:

<snip>
>
>Well.....I beg to differ on this.  Anything above 50 Mhz is considered VHF.
>(actually anything 'above' 49.99999 rpt, however some people will insist
>this is the same thing ;-D  The FCC says: NOT)
>

Finally, a definitive answer, and from the FCC, no less. This information
should probably be cross-posted onto the [OT] rounding thread. :=)



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2001\06\04@155830 by michael brown

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----- Original Message -----
From: "Bob Barr" <TakeThisOuTbob_barrEraseMEspamspam_OUTHOTMAIL.COM>
To: <RemoveMEPICLISTspamTakeThisOuTMITVMA.MIT.EDU>
Sent: Monday, June 04, 2001 2:49 PM
Subject: Re: [EE]: Mystery Amplifier Inquiry


> michael brown wrote:
>
> <snip>
> >
> >Well.....I beg to differ on this.  Anything above 50 Mhz is considered
VHF.
> >(actually anything 'above' 49.99999 rpt, however some people will insist
> >this is the same thing ;-D  The FCC says: NOT)
> >
Well....actually IIRC they say "50 Mhz and above" so this doesn't completely
preclude argument.  Also this would only apply to US amateur radio.  As true
VHF begins at 30 Mhz, but there are no VHF amateur bands below 50Mhz.
{Quote hidden}

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2001\06\04@160103 by Ron Wilder

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Actually...
VLF starts at 10 KHz
LF starts at 30 KHz
MF starts at 300 KHz
HF starts at 3 MHz
VHF starts at 30 MHz (not 50 MHz)
UHF starts at 300 MHz
SHF starts at 3 GHz
EHF starts at 30 GHz
etc.


Bob Barr wrote:

{Quote hidden}

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2001\06\04@162431 by David VanHorn

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>
> > In a ham context, VHF means 144-148  If it were 430, it would be labelled
>"UHF"
>
>Well.....I beg to differ on this.  Anything above 50 Mhz is considered VHF.
>(actually anything 'above' 49.99999 rpt, however some people will insist
>this is the same thing ;-D  The FCC says: NOT)
>
>michael (N5QMG)

Technically, yes, but when people refer to bands, it's generally 6M, 2M or
VHF, and 440 or UHF.

I'd expect an amp labelled VHF 25/100 to be 144-148 with 25W in 100 out.

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2001\06\04@163237 by Chris Carr

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>
> > At 10:03 AM 6/4/01 -0700, Barry Gershenfeld wrote:
> > > >Lunar Industries Inc
> > > >It is possibly designed to be operational on TV Broadcast Frequencies
> > > >Regards
> > > >Chris Carr
> > >
> > >I'm not sure why you said "TV" but maybe you read some additional
> > >information.  Now since the model said "VHF" my answer would
> > >be "VHF"...but a little further info...the company was started
> > >by an avid moonbounce enthusiast which kind of suggests 432 MHz.
> > >I was involved with some amateur TV which was around 434 MHz and
> > >that required an amplifier with a linear mode so they may have
> > >been able to use this one there too.
> >
> > In a ham context, VHF means 144-148  If it were 430, it would be
labelled
> "UHF"
>
> Well.....I beg to differ on this.  Anything above 50 Mhz is considered
VHF.
> (actually anything 'above' 49.99999 rpt, however some people will insist
> this is the same thing ;-D  The FCC says: NOT)
>
Actually VHF starts at 30MHz according to the CCIR or is it ITU-R these
days.


> >
> > >Of course, a lot of solid state amplifier designs were pretty
> > >broad band so it's likely it covers a lot more.   25/100 sounds
> > >like the power you'd get in classB/classC mode.
> >
> > Typically, they are rated with input/output power.
> >
I have the Company listed as providing broadcast TV Equipment. If the
Amplifier is for VHF then it is probably operating in TV Band 1 or TV Band 3
in the USA these extend from 54 to 88 MHz and 174 to 216 MHz..

Look at Band 1. An Amplifier with a flat bandpass (Amplitude and Group
Delay) of 34MHz centred on 71MHz whilst not impossible is very difficult to
obtain. Amplifiers in these bands are more commonly optimised for one 6MHz
channel. Hence my reason for mentioning that the Amplifier in question was
possibly for Broadcast TV  use.  I would doubt that such an Amplifier would
be suitable for the 2m Amateur Band. Although if it is centred on USA TV
Channel 4 it would be suitable for the British 70MHz Band.

Chris Carr

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2001\06\04@163635 by Barry Gershenfeld

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>Technically, yes, but when people refer to bands, it's generally 6M, 2M or
>VHF, and 440 or UHF.
>
>I'd expect an amp labelled VHF 25/100 to be 144-148 with 25W in 100 out.

I'd take the cover off and look at the size of the coils :-)

Barry

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