Dear Joe,
One system is on 380~400Mhz, and the other one is on 470~490Mhz.
Best Regards,
Kent
--- On Tue, 9/3/10, Joe <k1ike_m...@snet.net> wrote:
From: Joe <k1ike_m...@snet.net>
Subject: Re: [Repeater-Builder] Noise Level on a Duplexer
To: Repeater-Builder@yahoogroups.com
Date: Tuesday, 9 March, 2010, 7:29 AM
What frequency are you on?
Joe
Kent Chong wrote:
>
>
> Hello Everybody,
>
> Good day.
>
> We have developed a Duplexer to combine to two signals form two
> systems for in-building application. The Dupluxer (or combiner) has
> specifications of 1.7dB insertion loss and >60dB isolation. When we
> set up the system and power on the two systems, the combiner works fine.
>
> However, we notice that the noise level (up link) on the two systems
> will slowly increase, and until 3~4 days later, the noise level has
> increased to -80~-60dBm level. We then power down the systems for 3
> hours, and power them up again. The systems work fine again.
>
> Anybody could help?
>
> Best Regards,
>
> Kent
>
>
>
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