Thanks Bob, actually this is how I am going to have it set up. There is a 440 Mhz antenna up at 100 ft on the tower, and then I am putting a 2 meter antenna at 60' on the tower for the 2 meter remote base link and see how that works. That will put nearly 70' of seperation between the repeater antenna and the link antenna. Might try to put the radio in an RF type box to help isolate it from the actual repeater PA. Hope this all falls together. Only doing it for a few reasons, first to help a few of the guys who are not able to put up any antenna's, and all they have is the handi-talki. So hope it all helps.
Mathew
[EMAIL PROTECTED] wrote:
At 3/15/2006 04:07, you wrote:
>On my 145.27 Hay's Mill repeater, I run 250 watts into the duplexer.
>My 2 meter remote base antenna is about 40 feet down the tower. It is
>mounted directly under the repeater antenna for best isolation.
>I use a large Sinclair Notch Cavity tuned to 145.27 placed in the remote
>base feeder. I can successfully link to pairs about 200 kHz from 145.27.
>All of the 146 and 147 band is just fine....
>
>If your link radio has a built in diplexer (duplexer), I suggest running
>another to separate the VHF from the UHF and only placing the cavity in
>the VHF line. If you are using a dual band antenna, use another
>diplexer to combine the signals back together.
>
>Kevin
Along the same lines, if you separate VHF & UHF on the remote base radio
you can use separate antennas, which lets you place the UHF much higher on
the tower. In fact, if you're still using a GP9 for your repeater antenna
you can split that off & use the UHF side for your remote base. Kind of
doing that in reverse here (2 meter remote base TX combined with 440
repeater output TX).
Bob NO6B
>n9lv wrote:
> > What I need to know is if there is any type of isolator or other
> > device that I can put on my dual band radio that will keep my two
> > meter transmitter out of the 2 meter side of my radio. I know this is
> > a long shot, but if it can work, it would be excellent.
> >
> > What I am running is 120 watts out of the duplexer on 145.410 Mhz.
> >
> > Any suggestions. The antenna's are on seperate towers but only about
> > 40 feet apart base to base, the remote base antenna is at 90 feet and
> > the repeater antenna is at 130 feet.
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
Yahoo! Mail
Bring photos to life! New PhotoMail makes sharing a breeze.
YAHOO! GROUPS LINKS
- Visit your group "Repeater-Builder" on the web.
- To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
- Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
