Dave,

I have been flying Seeker IIs is my TD gliders for 2 seasons now with no
problems whatsoever. On the transmitter end I have used the Stylus module,
and a Hitec Synthesizer module with the Stylus adapter. All combinations
have been rock solid. Now that I have a Picolario I can see whether it
receives any interference.

To get the Seeker to fit in my Luckenbach fuses I have had to remove the
cases and wrap the boards in electrical tape.

Anker

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] 
Sent: Sunday, December 26, 2004 11:04 AM
To: [email protected]
Subject: [RCSE] Synth Combos

Thanks for the info (on and off list) supplied on the Futaba Tx (9C/CS)  
module that appears to soon be available. Comments regarding freq setting
and  
switches are highly appropriate and will require caution and attention as
this  
type of technology becomes more routinely available. In the near term, The
best 
 approach (for me) is to have ~ 4-6 or so Rx Xtals that will reduce the  
probability of using a crowded frequency when traveling. That keeps my
stable of  
reliable M5s, Fut148s, etc. in business

Long term, a synthesized Rx seems  a logical solution. Most of these are 
pretty high end and appear to be PCM. One  that appears to be in the
'everyday' 
price range and has an interesting  frequency lock (and remember) feature,
and 
is also PPM and auto-shift and  channel selectable, is from Polk's (Seeker
II):

http://polkshobby.site.yahoo.net/seekerii.html

Is anyone using  this unit for TD or other contest related soaring apps that

might potentially  encounter adjacent channel or harmonic interference 
problems? Any suggestions or  precautions with this approach and vendor?

Polk's has a long history and  seems to be a good supplier but I have no 
interaction with anyone that's used  this equipment and would appreciate any

opinions. I'll probably take this  approach and do a product review at some
time 
but wanted to see if this was  something that has already been evaluated.

There have been a number of  comments about keeping a low profile on 
frequency synthesizers. Well, having run  a long career in technology, that
isn't 
going to work. I think this type of  approach is coming and will become much
more 
widespread in the next few years.  Price and availability is a big obstacle 
right now but that's changing. If I can  buy a multichannel Tx module for
about 
the price of a dedicated single channel  unit, why do I want to buy the 
latter? Functionality and safety are the  restrictions. If mfrs. are
starting to 
handle the first, how do we handle the  second? Early users are going to
take a 
few knocks but that helps define the  opportunities for others.

There are some interesting advantages to the  synth approach. What are we as

end users going to do to ensure this technology  is deployed with the best 
safeguards for all pilots?

Seems like an  appropriate opportunity/challenge for the New Year. 

TIA for any  advice/comments,

- Dave R
 
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