[Yaesu] ft-8900 need help with cross band function....

Deon Erwin ZS1ZL zs1zl at telkomsa.net
Sat Dec 13 03:20:21 EST 2008


Jonathan

The FT-7800 is a dual-band VHF/UHF radio, but cannot do crossband.  Unlike
the FT-8800 and FT-8900, it only has a single receiver.

Unfortunately, the "problem" you are encountering is a characteristic of
crossband repeating, as Scott explained so well.

You can download the FT-7800 brochure from www.yaesu.com.

Regards
Deon ZS1ZL

----- Original Message ----- 
From: Jonathan Thawley
To: KBØNLY
Cc: Yaesu Reflector
Sent: Saturday, December 13, 2008 6:15 AM
Subject: Re: [Yaesu] ft-8900 need help with cross band function....


I'm not sure if this particular repeater has tone encoding on or not... i'll
have to do some testing tomorrow... but i will try that out tomorrow and see
if that helps out the problem :)

Thanks for the suggestion...

so does the 7800 not have that problem?

Jonathan


On Fri, Dec 12, 2008 at 10:44 PM, KBØNLY <kb0nly at mchsi.com> wrote:

Nope.. Nothing you can do about it, i have the FT-8800 and i also had an
8900 before trading it in for a couple FT-7800R's..  Long story short, it
won't change back until the carrier its receiving drops.  If the repeater
has tone encode and your running decode then its a little quicker as most
radios drop faster that way, they drop the tone before dropping the carrier
to remove any burst at the end of the transmission, if the radio it setup
for decode and it sees the tone drop it will treat it the same as a carrier
drop when crossbanding.

The radio will see the drop of the tone and will then allow changeover, but
still it needs to see a loss of receive on the one band before the other
will go into receive.

73,

Scott



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