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Blonder Tongue Galaxy III Series Plus?

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Old 05-12-2018, 07:22 AM   #1
Sev
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Question Blonder Tongue Galaxy III Plus Series?

Does anybody know if the only difference between the later Galaxy III series and the Galaxy III plus series is the power supply creating the higher gains?


Thank you.

Last edited by Sev; 05-12-2018 at 07:30 AM..
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Old 05-12-2018, 08:11 AM   #2
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Quote:
Originally Posted by Sev View Post
Does anybody know if the only difference between the later Galaxy III series and the Galaxy III plus series is the power supply creating the higher gains?


Thank you.
Blonder Tongue GALAXY III Series INFO
From Google Stark Eletronic cache

http://webcache.googleusercontent.co...&ct=clnk&gl=us

The GALAXY III Series includes high performance, consumer quality, antenna preamplifiers. These units are designed to mount on the antenna mast and are ideal for home use. The GALAXYIII Series features a modern design, a high impact polypropylene case and simplified mounting. A compact indoor transformer and power added are included with all models. Many models are available, including units for VHF, UHF combined UHF/VHF, 300 or 75 ohm outputs, and units with dual 75 ohm outputs. Each preamplifier is individually packaged in a display box and includes complete mast mounting hardware.
The GALAXY III PLUS Series includes high performance, consumer quality, antenna pre-amplifiers. These units are designed with a two unit amplifier, consisting of a low noise, mast-mounted preamplifier and a high output, indoor, post amplifier power supply. This arrangement allows each component to be optimized for its particular function and results in the best possible system performance. The GALAXY III Series feature lightning and surge protection and include complete mast mounting hardware.
N O T E :
The GALAXYIII and GALAXYIII PLUS Series preamplifiers employ a cut-off filter at the low band input to reduce interference from strong local FM transmitters. This approach deliberately reduces the FM band gain therefore, the GALAXY III and GALAXY III PLUS Series will pass FM for most stations, but will not be suitable for weak signal FM.

Manual:
https://www.blondertongue.com/amfile...roduct_id/236/

Google search
Blonder Tongue Galaxy III Plus Series

https://www.google.com/search?source....0.zAriOR_wd0Y

Blonder Tongue Galaxy III Plus Series Stark Electronics
click on Cached in drop down menu after link
https://www.google.com/search?ei=yff....0.-1GaJIztO1M
Attached Images
File Type: jpg Blonder Tongue Galaxy III Google cache snip.JPG (54.6 KB, 3 views)
__________________
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Last edited by rabbit73; 05-12-2018 at 08:34 AM..
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Old 05-12-2018, 10:35 AM   #3
Sev
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Quote:
Originally Posted by rabbit73 View Post
Blonder Tongue GALAXY III Series INFO
From Google Stark Eletronic cache

http://webcache.googleusercontent.co...&ct=clnk&gl=us

The GALAXY III Series includes high performance, consumer quality, antenna preamplifiers. These units are designed to mount on the antenna mast and are ideal for home use. The GALAXYIII Series features a modern design, a high impact polypropylene case and simplified mounting. A compact indoor transformer and power added are included with all models. Many models are available, including units for VHF, UHF combined UHF/VHF, 300 or 75 ohm outputs, and units with dual 75 ohm outputs. Each preamplifier is individually packaged in a display box and includes complete mast mounting hardware.
The GALAXY III PLUS Series includes high performance, consumer quality, antenna pre-amplifiers. These units are designed with a two unit amplifier, consisting of a low noise, mast-mounted preamplifier and a high output, indoor, post amplifier power supply. This arrangement allows each component to be optimized for its particular function and results in the best possible system performance. The GALAXY III Series feature lightning and surge protection and include complete mast mounting hardware.
N O T E :
The GALAXYIII and GALAXYIII PLUS Series preamplifiers employ a cut-off filter at the low band input to reduce interference from strong local FM transmitters. This approach deliberately reduces the FM band gain therefore, the GALAXY III and GALAXY III PLUS Series will pass FM for most stations, but will not be suitable for weak signal FM.

Manual:
https://www.blondertongue.com/amfile...roduct_id/236/

Google search
Blonder Tongue Galaxy III Plus Series

https://www.google.com/search?source....0.zAriOR_wd0Y

Blonder Tongue Galaxy III Plus Series Stark Electronics
click on Cached in drop down menu after link
https://www.google.com/search?ei=yff....0.-1GaJIztO1M
Thanks Rabbit.
All the Stark links appear to be dead.
The google cache is the most information I have seen so far.
I found those manuals already.

However still no info on whether the mast mount of the standard and plus models are different.
The wording in what you posted does not specify a difference. It almost indicates that they are the same.
The power supplies are distinctly different even though they have the same specs on voltage and amps.
I am thinking based on what you posted it is possible that the plus power supply is what brings up the db's.

Last edited by Sev; 05-12-2018 at 10:38 AM..
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Old 05-12-2018, 10:47 AM   #4
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Hello se v b&t don't sell them no more I think it's becuse the db is too low.
And noise was too hi 3.4 I think that is why they stop making them!!!

Last edited by Hdb91xg; 05-12-2018 at 11:18 AM..
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Old 05-12-2018, 11:27 AM   #5
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Quote:
Originally Posted by Hdb91xg View Post
Hello se v b&t don't sell them no more I think it's becuse the db is too low.
And noise was too hi 3.4 I think that is why they stop making them!!!

Well sev& Rabit the mast mount amp. that I can get to day noise is 3.2 and
They are like the old channel master amp. but you can adjust the the vhf 10/30
And the uhf 10/45,noise,3.2 and 24volts for $50dollars or vhf uhf uhf at 45:db
That you can adjust all 3 of them separately nice for stacking 2/91xg.and your
Hi vhf ANTENNA,

There is no mention of the any of the Galaxy's being adjustable that I have seen in any of the specs thus far.

The noise was high. Up to 5 db.

The plus series had a VHF gain of 31 and a UHF gain of up to 38.

So the problem was not with low gain.
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Old 05-12-2018, 11:47 AM   #6
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I can get an amp that is mast mount that you can adjust the vhf 10to30
And noise is 3 + uhf 10to45:db with 24volts,cost $50dollars
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Old 05-12-2018, 11:56 AM   #7
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Quote:
Originally Posted by Hdb91xg View Post
I can get an amp that is mast mount that you can adjust the vhf 10to30
And noise is 3 + uhf 10to45:db with 24volts,cost $50dollars
I'll bite.
Who is the manufacturer?
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Old 05-12-2018, 01:58 PM   #8
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Quote:
Originally Posted by Sev View Post
I am thinking based on what you posted it is possible that the plus power supply is what brings up the db's.
I am thinking the same thing.
Quote:
The GALAXY III PLUS Series includes high performance, consumer quality, antenna pre-amplifiers. These units are designed with a two unit amplifier, consisting of a low noise, mast-mounted preamplifier and a high output, indoor, post amplifier power supply.
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Old 05-12-2018, 02:55 PM   #9
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Many members have reported the Blonder Tongue Preamps were rather noisy.

Try and seek out the vintage Channel Master 7775, 7777, or 7778 models. The Winegard Chromstar models were also very good.
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Old 05-12-2018, 03:04 PM   #10
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This is the Belgium manufacturer Johansson.

They made several models, however they never interested me as they are noisy at 3.5dB.

The 7211 had a variable gain potentiometer reflecting (VHF 10-30 dB, UHF 25-40 dB gain) with a high noise figure of 3.5dB, and thus avoided.

The 7315 models would be worth a look at, as the noise figure was 1.8dB.

These models were never popular in the US market.

Quote:
Originally Posted by Sev View Post
I'll bite.
Who is the manufacturer?
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Old 05-12-2018, 04:14 PM   #11
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Well, at least I know what they look like:



This spec sheet shows the Plus and its gain:
https://www.multicominc.com/wp-conte...gue_galaxy.pdf
Attached Images
File Type: jpg Blonder Tongue GALAXY III Preamps 2.jpg (36.7 KB, 27 views)
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Old 05-12-2018, 05:46 PM   #12
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Quote:
Originally Posted by rabbit73 View Post
Well, at least I know what they look like:



This spec sheet shows the Plus and its gain:
https://www.multicominc.com/wp-conte...gue_galaxy.pdf
I had found that one as well.
That was about the limit of the information out there that I came across.
Really a shame with that much gain their is that much noise.
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Old 05-12-2018, 06:01 PM   #13
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The other thing to consider.
If I am looking at the preamp correctly. It does not require a balun.

So if you subtract that out from your testing. The noise figure improves a bit.
Nor do you have the insertion loss.

Edit. I was looking at that incorrectly.


Last edited by Sev; 05-13-2018 at 05:36 AM..
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Old 05-12-2018, 06:19 PM   #14
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This has nothing to do with the topic.

To help clarify, those Blonder Tongue Pre-Amps are rubbish. You are just adding noise to your system.

Don't use and your system is improved.

End of story!
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Old 05-12-2018, 06:19 PM   #15
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Quote:
Originally Posted by Sev View Post
The other thing to consider.
If I am looking at the preamp correctly. It does not require a balun.
IIRC, in the old preamps that had 300 ohm input there was a 4 to 1 balun inside the preamp to match the input transistor of the amp. Hard to get around it unless you use an antenna with a 75 ohm feedpoint connected to a preamp with a 75 ohm input, or use a 1/2 wave coaxial balun with an antenna that has a 300 ohm feedpoint.
__________________
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Last edited by rabbit73; 05-12-2018 at 06:25 PM..
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