Dear Pentti,

Thank you for contacting us and for your interest in our products.
A couple of things to mention:
1. Even if I gave you the cable lengths you may still rely on final tuning to optimize the duplexer. Sometimes trial and error cuts may be tried.

2. Secondly and most important, the PD526, by design, will not be able to be tuned to as  narrow as 1.6 MHz separation (offset). I hate to recommend another part number but I will. The duplexer PD1157 can be ordered from as low as 0.5 MHz offset or more.

Specs can be found at www.rfsworld.com
Sincerely,

--------------------------------
Dimitri Limitsios
Manager, Applications Engineering
Radio Frequency Systems
Phone: 203-630-3311 ext. 1810
Dept. Phone: 800-659-1880
Fax: 203-821-3852
e-mail: dimitri.limitsios@rfsworld.com
Visit our web site: http://www.rfsworld.com

-----Original Message-----
From: Pentti.Gronlund@
[mailto:Pentti.Gronlund@]
Sent: Thursday, February 17, 2000 9:39 AM
To: applications.engineering@rfsworld.com
Subject: PD526 interconnecting cables

Dear Sirs,

Our radio club managed to achieve a surplus PD526-WR-SR-1 duplexer without
the interconnecting cables. The duplexer has been used in the Dutch Traxys
410/420 MHz trunked network.

I'm trying to retune the unit to be used in our 70 cm amateur radio repeater
(TX 434.900 MHz, RX 433.300 MHz). It would save me a tremendous amount of
trial and error if it could be possible to get the actual lengths of the
interconnecting cables from you. I'm also interested to hear any hints how
to modify the unit (manufactured for 10 MHz duplex offset, I believe) for
steeper notches and less passband loss with our 1.6 MHz offset.

Kind Regards,

Pentti Gronlund OH3BK