[aprssig] GPS attachment for Kenwood TH-D7?

[Derek Koonce]

Magellan had a small GPS unit around 1x1x0.2". Match this with a patch 
antenna, 0.8x0.8x0.3" and you have a very small GPS. This still required 
3.3V to operate. The unit spits out NEMA/RS232 format. Not sure if it is 
still available.

Derek Koonce
KE6JTP



Greg D. wrote:

> Slight drift...
>
> Has anyone built a GPS unit suitable for mounting on top of the 
> Kenwood TH-D7A(G)? I'm thinking of something with two prongs that 
> would clip into the back of the rig's battery pack, and sit behind the 
> base of the antenna. What GPS module & antenna did you use, and how 
> did you power it?
>
> Thanks,
>
> Greg KO6TH
>
>
>
> ----Original Message Follows----
> From: Mark Cheavens <mcheavens at usa.net>
> Reply-To: TAPR APRS Mailing List <aprssig at lists.tapr.org>
> To: TAPR APRS Mailing List <aprssig at lists.tapr.org>
> Subject: Re: [aprssig] Some Quick Impressions of the Dayton 
> Hamvention2007 -- APRS -- Kenwood TM-D710
> Date: Tue, 22 May 2007 17:32:20 -0500
>
> I will go one step closer. I own a D7 and would buy a replacement for 
> it as well as a D710, ONLY if they have smart beaconing.
>
> I do not own a D700 because it will NOT do smart beaconing. I would 
> gladly send Kenwood the money for one IF it did!
>
> As far as a D7 replacement it should also have a built in GPS and 
> better batter life (Smart beaconing would help).
>
> Too bad the Garmin Rino's won't do HAM frequencies and AFSK data!
>
> Mark Cheavens
> KC5EVE
>
>
> At 05:08 PM 5/22/2007, you wrote:
>
>> Bob Burns W9RXR wrote:
>>
>> > At 01:37 AM 5/21/2007, Stephen H. Smith wrote:
>> > >I was finally told that the D710 probably won't be available until
>> > >early fall. [snip]
>> > Both the U.S. rep and "Shin" said that the D710 firmware was still in
>> > development and that few details were still being worked out. I asked
>> > about Smart Beaconing, but was told that the D710 would have
>> > "something better". I was also told that "Shin" had spent a lot of
>> > time with Bob Bruninga at the TAPR conference discussing APRS
>> > features for this radio. Bob may or may not be able to confirm what
>> > they discussed.
>>
>> It seems several people asked Kenwood about SmartBeaconing for the 
>> D710, because several such tales were told over at the HamHUD booth.
>>
>> My guess is that "something better" means WB4APR's "PROPORTIONAL 
>> PATHING" (PP). While PP may help QRM issues as well as 
>> SmartBeaconing, it certainly does not produce any improvement in the 
>> appearance of a map track over fixed-timed posits, because the 
>> positions are in fact still being sent at fixed intervals. In 
>> contrast, SmartBeaconing includes both corner-pegging and 
>> speed-variable beaconing, which not only improve the QRM situation, 
>> but also produce useful map tracks, and allow dead reckoning to truly 
>> work. SmartBeaconing has been adopted and refined by many APRS 
>> software and devices, including HamHUD (II and V), UIView, APRS+SA, 
>> SmartPalm, OpenTracker, TinyTrak, TNC-X, and APRS Deluxe. It's well 
>> accepted by the APRS community, which begs the question: why won't 
>> Kenwood adopt it?
>>
>> Speculative 73's,
>>
>> Steve KA9MVA
>>
>> "The HamHUD Guy"
>>
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