[d-star] Fw: More on Analogue Radio D-STAR Adaptor Using UT-118

[Mark Thompson]

Analogue Radio D-STAR Adaptor 

using Icom UT-118 

http://d-star.dyndns.org/rig.html.en 

----- Forwarded Message ----
From: jk1zrw <7m3tjz at jk1zrw.ampr.org>
Sent: Thursday, October 25, 2007 7:45:00 PM
Subject:  Re: UT118 Adaptor

Hi Yuki & Brad,

--- In dstar_digital at yahoogroups.com, "Brad Rehm" <bradrehm at ...> 
wrote:

> I found your project very interesting, and I'm surprised to see
> that you were able to interface the UT118 to an FT-817.  I know 
> the radio has a "packet" port, but I wasn't aware that it would
> support a 9.6 kbps data rate.  Did you modify the radio in any 
> way, or did you find that the data port would run at D-Star speed?

The modulation of D-STAR is 4800bps GMSK with 0.5 BT.  So if your rig 
has bandwidth(in AF, not RF) from 20HZ to 2400Hz(2600Hz is better 
than 2400Hz.), you can use D-STAR with my adapter. (Usally, 9600bps 
packet is used G3RUH. And the bandwidth of this modulation needs more 
wide than D-STAR.)    

>  Does it work properly at both 2m and 450MHz?

Yes, it works any band. Only requirement is AF bandwidth of your rig. 
If SBB of HF has above requirement, we can use D-STAR in HF. (I ma 
nore sure now.)  

> 
> Also, have you tried to use your "adapted adaptor" with any other
> radio?  The Yaesu 2 meter FT-2600, for example, also has a data
> port.

Yes, alredy we (I and my friends) tested IC-910, FT-817, FT-8000, and 
TM833 and so on. But my adapter needs the adjustment of in/out audio 
level for each rig. I check the manula of FT-2600.

Packet Tx Data Input (9600bps): Typ. 800mV/600ohm 

So you need the adjustment of audio level.

Satoshi 7M3TJZ

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com