Baluns (Brands, Designs, Losses, DIY Loops, etc.) - Page 15 - Canadian TV, Computing and Home Theatre Forums
 

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Old 2009-03-17, 01:04 PM   #211
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300ohms,

Is it worth to browse the fleamarkets to try to find one made in Japan ?

Or if this did give me better results, then it is not worth it?


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Old 2009-03-17, 03:56 PM   #212
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Quote:
Is it worth to browse the fleamarkets to try to find one made in Japan ?
If you like to do that anyway, like me, then yes.

Today, I picked up an antique, never been used, clay Scottish pipe for $3. A new pipe in the tobacco store is a minimum of $20, and I needed another anyway, heh.
I also got well over $1000 worth of SLR camera lenses, in pristine condition, for my son for $42, heh.
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Old 2009-03-18, 09:59 AM   #213
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I like fleamarkets too.

I guess now, I will search for the perfect balum.

Maybe I try to make one.
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Old 2009-03-18, 10:14 AM   #214
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Quote:
I guess now, I will search for the perfect balum.
None are perfect, of course. The goal is just to get a better one, heh.
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Old 2009-03-23, 09:45 AM   #215
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Quote:
Originally Posted by 300ohm View Post
None are perfect, of course. The goal is just to get a better one, heh.
indeed, and if you find one, let us know
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Old 2009-03-23, 09:48 AM   #216
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Default japanese baluns

in reference to the japanese baluns a couple of people mentioned, are these discontinued or are the japanese still making them (so presumably in this internet age they could be ordered from japan ?)
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Old 2009-03-23, 10:36 AM   #217
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Good point, I dont know. A lot of the old Japanese manufacturing stuff is sold off to Taiwan and China and others, and the Japanese smartly move on to newer and more profitable endeavors. I noticed that on their blank optical disk manufacturing. The good TY blank CDs and DVDs are now pretty scarce.
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Old 2009-03-26, 09:00 AM   #218
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Gah. This whole thing is too addicting. Now I'm thinking of replacing the balun in my antenna, because I think the one I bought at home depot might be hampering my signal. (Phillips outdoor model)
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Old 2009-03-26, 09:39 AM   #219
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How does the Philipps outdoor compare with the CM 3075 balun...
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Old 2009-03-26, 09:41 AM   #220
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According to the links posted earlier, the Philips balun does not compare well.
Quote:
Code:
Maker          Model            Typ. Max.
-------------- ---------------- ---- ----
Channel Master Model 3075       1.7  2.2 dB
Philips        PM61009          3.0  4.7 dB
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Old 2009-03-26, 10:33 AM   #221
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Wait a minute, there was another analysis done where the Phillips balun was very close to the CM one. I think the moral may be, it depends on the individual unit. The CM one may have better quality control at the factory.
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Old 2009-03-26, 10:37 AM   #222
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I bought a Source balun, not sure of the name...but I guess the best bet is the CM.
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Old 2009-03-26, 10:42 AM   #223
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More than likely, but dont throw the other away. Test and compare it to the CM one.
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Old 2009-03-26, 10:52 AM   #224
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I'm really lamenting the fact that none of the pre-amps that I can find have 300 ohm inputs. I found the circuit layout for one in a 1977 IEEE Transactions on Broadcasting
(Advanced Antenna Design and an Ultralow-Noise Preamplifier Extend UHF Viewing Area : ieeexplore.ieee.org/iel5/11/4044035/04044041.pdf but you need an IEEE account or access to an institution that has one... Thanks, local college!)

But that is beyond my current insanity level here.
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Old 2009-03-26, 10:53 AM   #225
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firimari:

What's the basis for your statement that the balun might be hampering your signal - are you experiencing reception difficulties????cause now you have me doubting...
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