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

intravino · 2009-03-17, 01:04 PM

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?

Intravino

300ohm · 2009-03-17, 03:56 PM

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.

intravino · 2009-03-18, 09:59 AM

I like fleamarkets too.

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

Maybe I try to make one.

300ohm · 2009-03-18, 10:14 AM

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.

ppauper · 2009-03-23, 09:45 AM

Quote:

Originally Posted by 300ohm

None are perfect, of course. The goal is just to get a better one, heh.

indeed, and if you find one, let us know

ppauper · 2009-03-23, 09:48 AM

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 ?)

300ohm · 2009-03-23, 10:36 AM

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.

firimari · 2009-03-26, 09:00 AM

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)

balm · 2009-03-26, 09:39 AM

How does the Philipps outdoor compare with the CM 3075 balun...

firimari · 2009-03-26, 09:41 AM

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

300ohm · 2009-03-26, 10:33 AM

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.

balm · 2009-03-26, 10:37 AM

I bought a Source balun, not sure of the name...but I guess the best bet is the CM.

300ohm · 2009-03-26, 10:42 AM

More than likely, but dont throw the other away. Test and compare it to the CM one.

firimari · 2009-03-26, 10:52 AM

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.

balm · 2009-03-26, 10:53 AM

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...

2009-03-23, 09:48 AM	#216
ppauper Join Date: May 2007 Posts: 208	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 ?)

2009-03-23, 10:36 AM	#217
300ohm Veteran Join Date: Mar 2008 Location: Somewhere in Delaware on the flat side Posts: 7,002	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. __________________ My builds/plans (not the latest models) are located here.

2009-03-26, 10:33 AM	#221
300ohm Veteran Join Date: Mar 2008 Location: Somewhere in Delaware on the flat side Posts: 7,002	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. __________________ My builds/plans (not the latest models) are located here.

2009-03-26, 10:42 AM	#223
300ohm Veteran Join Date: Mar 2008 Location: Somewhere in Delaware on the flat side Posts: 7,002	More than likely, but dont throw the other away. Test and compare it to the CM one. __________________ My builds/plans (not the latest models) are located here.

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2009-03-17, 01:04 PM	#211
intravino Join Date: Jan 2008 Location: Beloeil Posts: 585	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? Intravino

2009-03-18, 09:59 AM	#213
intravino Join Date: Jan 2008 Location: Beloeil Posts: 585	I like fleamarkets too. I guess now, I will search for the perfect balum. Maybe I try to make one.

2009-03-26, 09:00 AM	#218
firimari Join Date: Feb 2009 Location: Upstate NY Posts: 180	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)

2009-03-26, 09:39 AM	#219
balm Veteran Join Date: Jan 2009 Location: Montreal Posts: 2,248	How does the Philipps outdoor compare with the CM 3075 balun...

2009-03-26, 10:37 AM	#222
balm Veteran Join Date: Jan 2009 Location: Montreal Posts: 2,248	I bought a Source balun, not sure of the name...but I guess the best bet is the CM.

2009-03-26, 10:52 AM	#224
firimari Join Date: Feb 2009 Location: Upstate NY Posts: 180	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.

2009-03-26, 10:53 AM	#225
balm Veteran Join Date: Jan 2009 Location: Montreal Posts: 2,248	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...