[FADCA] 9k6 radios

[fadca@mailman.qth.net]

> -----Original Message-----
> From: Dale Coleman [mailto:kf4sir@earthlink.net]
> Sent: Friday, October 18, 2002 07:23 AM
> To: fadca@mailman.qth.net
> Subject: Re: [FADCA] 9k6 radios
> 

> Hi Chuck and the group, I have two Yaesu rigs that I have 
> used on packet. I 
> have used the FT-8100R on both 1200 and 9600 (receive only) 
> and it worked 
> very well. The FT-8100 is a dual band VHF and UHF rig. One of 
> the things I 
> did not like about the FT-8100 is each time the PTT is keyed 
> the fan comes 
> on for a minute or so, somewhat annoying.

Yes could be, but at a switch site it is probably a life extender
for the radio if it is seeing a lot of link activity.

> 
> If you can get by with using only 2 meters the Yaesu FT-1500M 
> might be 
> worth looking at. It is a very simple and easy to hook up rig 
> that really 
> works very well and the price is very low. This rig also uses 
> a interesting 
> case that serves as a heat sink. It runs cool when used at 
> low power and is 
> completely silent.

2M is good for user access so it would be a plus there, but for
network links which is where we really need the wide band higher
speed stuff it is a no go as per FADCA recommendations we do not
link sites on 2M. Those links should be point to point and users
should not be subjected to link communications, nor should other
users have their activities slowed by a link that goes across a
LAN freq. Definitly have to look at it for user access, I think
that we are going to see more and more people get on the higher
speed stuff sooner or later.


> 
> The Yaesu rigs use a min din connector on the back for packet 
> and this may 
> be the best reason for using them. The connector is the same 
> as a PS2 mouse 
> and the cable can be found at most computer stores. The 
> hookup using this 
> connector and cable is very easy. You can change the speaker 
> volume and 
> leave the mic attached without affecting the packet 
> operations, a big plus 
> for a part time user.

That seems to be the only thing that the manufacturers have
more or less standardized on. I noticed while checking out the
other radios, most of them are using either the mini-DIN (for
audio or the DB-9 connector and that is because the radio can
be fitted with a internal TNC, so if there is no TNC you just
go directly to the I/O of the radio from the DB-9 connector so
in truth I see two types of connectors out there the mini-DIN
and the DB-9


> 
> I have a 9600 tnc but just never got around to getting the 
> deviation set 
> for 9600 - that's why I only used the FT-8100 on receive.
> 

It is not too bad, best done with a deviation meter but a
scope will work as you can set the eye for best pattern and
usually you will not be too far off. You do want to get the
signals as low as possible so you can see the eye under low
levels and adjust for that signal level.
 


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