LI-S4

I bought a passive cellular repeater for my S4.

The glass mount mast is about 11" long, has an anti whistle plastic structure around the winding in the middle and terminates in a small plastic cap. Looks like a glass mount/hard wired cell antenna.

Is the legnth of the mast crucial? Can I cut it down about three or so iches without trashing it?

Thanks in advance!!

user 46456794

But then I'm not really a qualified radio-man.

I do know that an antenna's characteristics / specifications will change if you change its properties (length being one of a few things that could be changed).

Cutting three inches may not totally trash it's capabilities, but you won't be doing yourself any favors either.

-s4zando

Steve Trac, Sec 303

all.

TTS_4_to_A6

I have an internal glass mount and there is no antenna on the outside of the glass. It uses my entire front windshield.

I would not recommend cutting yours, as you could lose signal all together.<ul><li><a href="http://www.rfindustries.com.au/rfiproducts/mobileAntennas/duet_r50.pdf">Something similar to what I have</a></li></ul>

MrHappy

The OEM antenna works great for my "tri-band" (two digital, one analog) Motorola Timeport flip-phone. The OEM antenna (integrated into the glass? I'm not sure where) comes down to a male mini-UHF connector in the trunk's smuggler box. It's hard to find at first, it's just a small black coax cable with a gray foam covering at the end. Pull the cable up and take off the foam covering. From there, you'll have to get a cable that connects that connector to your phone, though.

Taner Halicioglu

to work best. But cellphones use multiple frequencies... ~900MHz, 1.2GHz, etc...

900MHz would be 1/3 of a meter
1.2GHz would be 1/4 of a meter

( to calculate other lengths, in case your phone needs other frequencies, use: wavelength * freqency = speed of light )

so if you make it a 1/12th of a meter (8.3inches) it would be really good ;-)

Or half of that (~4inches)

*** HOWEVER **

If there are coils or some other electronics in the base, tip, or middle of the whip, this can change the calculations...

anyway, go read a book on antennas if you want ;-)

-T

LI-S4

Yes, this I learned today...I won't be cutting it...thanks.

LI-S4

That sounds interesting...Will it work with a Nokia 8260..Ed? Any Idea?

MrHappy

Both phones use 800 MHz analog, 800 MHz digital, and 1.9GHz digital.