[DogParkList] Yaesu FT-847 Question

[Don Agro]

Hi Randel,

On 28-Nov-05, at 5:52 PM, Chuck Gould wrote:

> Hi Randel,
>
> If it's the one that has the Apple Serial ports (the round ones), I  
> know for sure it doesn't recognize the input levels coming from the  
> radio [interface]. Not sure about other Keyspan models.

The Keyspan adapters with mini DIN-8 connectors work fine, but they  
are RS-422 ports and need a special cable to work with RS-232  
devices. This special cable used to be called a "Mac Modem Cable" and  
it can be bought or constructed very easily.

Here is some general info from the MacLoggerDX manual on how to  
connect your radio to your computer...

<http://www.dogparksoftware.com/MacLoggerDX/Manual/Pages/cables.html>

A more likely problem with the FT-847 is the odd wiring of the RS-232  
port requiring a special cable.

There are a large number of MacLoggerDX customers using Keyspan  
adapters with the Yaesu FT-847 and I'm sure one of them will be able  
to help you with the cable.

> I made my own interface for my ICOM Pro-III, and had the same  
> problems with the Keyspan that I had experienced with a Yaesu HT  
> adapter. According to my testing, it seems to be for the same  
> reasons. These are both interfaces that get power from DTR, but  
> don't actually provide a negative voltage for the input data  
> signal. The Keyspan needs that. The majority of PC serial ports  
> will recognize TTL levels for input, so it's easy to make an  
> inexpensive interface that only provide positive going data levels.  
> On the input line, a TTL "zero" level will be recognized on most  
> interfaces, but the Keyspan requires it to go negative (see RS-232  
> specs). Technically (if I remember correctly) the spec for a valid  
> data level allows for positive levels (at least to a TTL zero max).

There was an extensive thread on Ham-Mac less than a month ago on  
radio interfacing and the Keyspan adapters.

The Keyspans work just fine... here is the archive...

<http://mailman.qth.net/pipermail/ham-mac/2005-November/thread.html>


> Anyway, I purchased an IOGear serial adapter and it works fine (has  
> OS-X driver included). It's pretty cheap, too ($19.95, I believe).  
> Although I haven't tried with the Yaesu HT interface, I assume it  
> will work fine with that also.
>
> Hope this helps.
>
> 73,
> Chuck, WB6KDH
>
> On Nov 28, 2005, at 1356 , Fr Randel Livingood wrote:
>
>> Hello Mac Hams!
>>
>> I have a FT-847 and an eMac.  I am attempting to run the  
>> MacLoggerDX and am running into a bit of bother.  I have the eMac  
>> connected to the 847 via a Keyspan USB/serial adapter, but for  
>> some reason the computer and radio are not recognizing each  
>> other.  I get the "not connected" and "no data" warnings on the  
>> program.  Is there anyone out there who has a similar setup who  
>> would be able to point me in the correct direction?
>>
>> 73,
>>
>> Randel KG6IIP
>>
>> _______________________________________________
>> DogParkList mailing list
>> DogParkList at dogparksoftware.com
>> http://two.pairlist.net/mailman/listinfo/dogparklist
>>
>
>
> _______________________________________________
> DogParkList mailing list
> DogParkList at dogparksoftware.com
> http://two.pairlist.net/mailman/listinfo/dogparklist

73 Don Agro VE3VRW

D o g   P a r k   S o f t w a r e   L t d .

email: dagro at dogparksoftware.com
   www: http://www.dogparksoftware.com
     iChat AV:dogpark at mac.com