Re: [RCSE] RF Synthesizer

2004-12-23 Thread Brent Hoover
Always like your posts Tom!
Brent ( lurking in the shadows as well )


--

Date: Wed, 22 Dec 2004 08:26:28 -0500
From: Thomas Koszuta [EMAIL PROTECTED]
To: soaring@airage.com
Subject: Re: [RCSE] RF Synthesizer
Message-ID: [EMAIL PROTECTED]

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But are the RF Synthesizers really the same as using a specifically =
tuned module and crystal?  Names like dial-a-crash and the like come =
to mind.

Your 2 cents?

Tom Koszuta
Western New York Sailplane and Electric Flyers
Buffalo, NY
  - Original Message -=20
  From: Mike Remus=20
  To: [EMAIL PROTECTED] ; [EMAIL PROTECTED]
  Sent: Tuesday, December 21, 2004 12:12 PM
  Subject: Re: [RCSE] RF Synthesizer



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Re: [RCSE] RF Synthesizer

2004-12-22 Thread Thomas Koszuta



But are the RF Synthesizers really the same as 
using a specifically tuned module and crystal? Names like "dial-a-crash" 
and the like come to mind.

Your 2 cents?

Tom KoszutaWestern New York Sailplane and 
Electric FlyersBuffalo, NY

  - Original Message - 
  From: 
  Mike Remus 
  To: [EMAIL PROTECTED] ; [EMAIL PROTECTED] 
  Sent: Tuesday, December 21, 2004 12:12 
  PM
  Subject: Re: [RCSE] RF Synthesizer
  
  
  You Guys had better ask Gordy on this one :~)
  
  On Tue, 21 Dec 2004 08:35:37 -0500 (EST) Bill Conkling [EMAIL PROTECTED] writes: 
  What do you mean "not 'legal' for contests"?  It is either 
  LEGAL or NOT. You 'sport' fly with the same radio that  
  you 'contest' with!  .bc 
  AG4YQ Williamsburg, VA On 
  Mon, 20 Dec 2004 [EMAIL PROTECTED] 
  wrote:   Is there an RF synthesizer that works with 
  the Futaba 9C  transmitter (not  the 9ZAP)? Nothing 
  appears to be available directly from Futaba.  Some 
  folks  claim the Spectra module (Hitec) works but with some 
   compatibility issues - but  then things aren't 'legal' 
  for contests.   Anyone have any thoughts/suggestions? 
  If the Spectra module works,  is it  treated like the 
  aftermarket antennae (rubber ducky, base load,  etc.). 
TIA,   Dave R  
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  Mike RemusLOFT Glider ClubFort Wayne INLSF Level 5 
  #112Remember; Dreams are the seedlings of reality. Dream Lofty 
  dreams!


Re: [RCSE] RF Synthesizer

2004-12-22 Thread Charles Frey

No, synthesizers are not the same as using a crystal, but that doesn't
mean you shouldn't use them.  Their spectrum may not be quite as clean as
a crystal set, but they're still within spec if they're working properly.
Synthesizers are tuned just like a crystal set is.

dial-a-crash refers to one person having every 72 MHz R/C channel
available to him on his transmitter basically at his finger tips.  It's
just the same if somebody came out to the field with a bag of crystals,
one for every channel, just most people don't do that.  And so since you
have every channel there available to you, this worries some people that
careless, selfish, or absent minded people are going to come up on their
frequency when they don't properly obtain the frequency.

-Charles



On Wed, 22 Dec 2004, Thomas Koszuta wrote:

 But are the RF Synthesizers really the same as using a specifically
 tuned module and crystal?  Names like dial-a-crash and the like come
 to mind.

 Your 2 cents?

 Tom Koszuta
 Western New York Sailplane and Electric Flyers
 Buffalo, NY
   - Original Message -
   From: Mike Remus
   To: [EMAIL PROTECTED] ; [EMAIL PROTECTED]
   Sent: Tuesday, December 21, 2004 12:12 PM
   Subject: Re: [RCSE] RF Synthesizer


   You Guys had better ask Gordy on this one  :~)

   On Tue, 21 Dec 2004 08:35:37 -0500 (EST) Bill Conkling [EMAIL PROTECTED] 
 writes:
What do you mean not 'legal' for contests?
   
It is either LEGAL or NOT.  You 'sport' fly with the same radio that
you
'contest' with!
   
.bcAG4YQ  Williamsburg, VA
   
   
   
   
On Mon, 20 Dec 2004 [EMAIL PROTECTED] wrote:
   
 Is there an RF synthesizer that works with the  Futaba 9C
transmitter (not
 the 9ZAP)? Nothing appears to be available  directly from Futaba.
Some folks
 claim the Spectra module (Hitec) works but with  some
compatibility issues - but
 then things aren't 'legal' for contests.

 Anyone have any thoughts/suggestions? If the Spectra module works,
is it
 treated like the aftermarket antennae (rubber ducky, base load,
etc.).

 TIA,

 Dave R

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[EMAIL PROTECTED]  Please note that subscribe and
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   Mike Remus
   LOFT Glider Club
   Fort Wayne IN
   LSF Level 5 #112
   Remember; Dreams are the seedlings of reality. Dream Lofty dreams!

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Re: [RCSE] RF Synthesizer

2004-12-22 Thread Mike Shellim
 But are the RF Synthesizers really the same as using a specifically
 tuned module and crystal?  Names like dial-a-crash and 
 the like come to mind.

Software controlled synthesisers (e.g. Multiplex Evo HFM-S) are in principle
safer than Xtals. 

- the UI is designed to prevent accidental changing of frequency. 
- since the actual frequency is displayed on the LCD screen there can be no
confusion.

Modules with rotary switches are another matter.

Mike



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Re: [RCSE] RF Synthesizer

2004-12-22 Thread Martin Usher
 But are the RF Synthesizers really the same as using a specifically
 tuned module and crystal?  Names like dial-a-crash and
 the like come to mind.

The Futaba module shown on the Web site is like the Hitec Spectra module -- 
you alter the frequency using small rotray switches to set the channel
number. These switches are (on the Hitect) placed on the back of the module
so they're not accessible once the module's put back into the transmitter.

When I first got one of these modules I thought that there would be a front
panel control for the channel -- dial a crash -- but Hitec had obviously
thought this one through.

The only concern that I have is those switches. I'm familiar with this type
of switch and they're just not designed for frequent  adjustment (they're
like crystal sockets, BTW). So anything other than occasional adjustment of
the channel is likely to make them unreliable. You also have to look closely
at the settings -- the slots tend to widen out with use so its very easy to
accidentally set the channel to one adjacent to the one you were going for.

Martin Usher

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Re: [RCSE] RF Synthesizer

2004-12-21 Thread Bill Conkling
What do you mean not 'legal' for contests?

It is either LEGAL or NOT.  You 'sport' fly with the same radio that you
'contest' with!

.bcAG4YQ  Williamsburg, VA




On Mon, 20 Dec 2004 [EMAIL PROTECTED] wrote:

 Is there an RF synthesizer that works with the  Futaba 9C transmitter (not
 the 9ZAP)? Nothing appears to be available  directly from Futaba. Some folks
 claim the Spectra module (Hitec) works but with  some compatibility issues - 
 but
 then things aren't 'legal' for contests.

 Anyone have any thoughts/suggestions? If the Spectra module works, is it
 treated like the aftermarket antennae (rubber ducky, base load,  etc.).

 TIA,

 Dave R

 RCSE-List facilities provided by Model Airplane News.  Send subscribe and 
 unsubscribe requests to [EMAIL PROTECTED]  Please note that subscribe and 
 unsubscribe messages must be sent in text only format with MIME turned off.

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Re: [RCSE] RF Synthesizer

2004-12-21 Thread Mike Remus




You Guys had better ask Gordy on this one :~)

On Tue, 21 Dec 2004 08:35:37 -0500 (EST) Bill Conkling [EMAIL PROTECTED] writes: What 
do you mean "not 'legal' for contests"?  It is either LEGAL or 
NOT. You 'sport' fly with the same radio that  you 
'contest' with!  .bc AG4YQ 
Williamsburg, VA On Mon, 20 Dec 2004 
[EMAIL PROTECTED] wrote:  
 Is there an RF synthesizer that works with the Futaba 9C  
transmitter (not  the 9ZAP)? Nothing appears to be available 
directly from Futaba.  Some folks  claim the Spectra module 
(Hitec) works but with some  compatibility issues - but 
 then things aren't 'legal' for contests.   Anyone 
have any thoughts/suggestions? If the Spectra module works,  is 
it  treated like the aftermarket antennae (rubber ducky, base 
load,  etc.).   TIA,  
 Dave R   RCSE-List facilities provided by Model 
Airplane News. Send  "subscribe" and "unsubscribe" requests to 
 [EMAIL PROTECTED]. 
Please note that subscribe and  unsubscribe messages must be sent in 
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Mike RemusLOFT Glider ClubFort Wayne INLSF Level 5 
#112Remember; Dreams are the seedlings of reality. Dream Lofty 
dreams!


[RCSE] RF Synthesizer

2004-12-20 Thread RegDave
Is there an RF synthesizer that works with the  Futaba 9C transmitter (not 
the 9ZAP)? Nothing appears to be available  directly from Futaba. Some folks 
claim the Spectra module (Hitec) works but with  some compatibility issues - 
but 
then things aren't 'legal' for contests.  

Anyone have any thoughts/suggestions? If the Spectra module works, is it  
treated like the aftermarket antennae (rubber ducky, base load,  etc.).

TIA,

Dave R  

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RE: [RCSE] RF Synthesizer

2004-12-20 Thread Ron Kramer
I have the hitec, it came my Fut 8AUsuper that I bought from a guy - it
works great, just click in the channel on the back. No - I heard that they
aren't allowed at contests.

I'd consider selling mine, since I just bought 2 Styli' the 8AU won't get
that much use anymore. Also would sell my Fut 6 channel if anyone is
looking. (I have 3 8 channel radios now) no need for the 6 anymore.



-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Monday, December 20, 2004 4:17 PM
To: [EMAIL PROTECTED]
Subject: [RCSE] RF Synthesizer


Is there an RF synthesizer that works with the  Futaba 9C transmitter (not
the 9ZAP)? Nothing appears to be available  directly from Futaba. Some folks
claim the Spectra module (Hitec) works but with  some compatibility issues -
but
then things aren't 'legal' for contests.

Anyone have any thoughts/suggestions? If the Spectra module works, is it
treated like the aftermarket antennae (rubber ducky, base load,  etc.).

TIA,

Dave R

RCSE-List facilities provided by Model Airplane News.  Send subscribe and
unsubscribe requests to [EMAIL PROTECTED]  Please note that
subscribe and unsubscribe messages must be sent in text only format with
MIME turned off.

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Re: [RCSE] RF Synthesizer

2004-12-20 Thread Doug McLaren
On Mon, Dec 20, 2004 at 04:16:31PM -0500, [EMAIL PROTECTED] wrote:

| Is there an RF synthesizer that works with the  Futaba 9C transmitter (not 
| the 9ZAP)? Nothing appears to be available  directly from Futaba. Some folks 
| claim the Spectra module (Hitec) works but with  some compatibility issues - 
but 
| then things aren't 'legal' for contests.  
| 
| Anyone have any thoughts/suggestions? If the Spectra module works, is it  
| treated like the aftermarket antennae (rubber ducky, base load,  etc.).

The `Spectra module in the 8U/9C' issue is quite a religious issue.
Those saying that you can't do it (because of FCC/AMA rules) trying to
drown out those who are actually doing it, and vice versa.

Does it work?  Apparantly.  Is it legal?  Many say no.  The AMA
probably could deny a claim based on it, which is probably the biggest
concern.  [ Yes, I'm talking US here. ]

But that's ok ... check 'dis out :

   http://www2.towerhobbies.com/cgi-bin/wti0001p?I=LXHKB1P=7

Futaba has been promising a synthesized module for a long time, and
teasing us with various hints that it might be available.  Lately
they've been giving dates, but the dates keep getting pushed back.
This has been going on for over a year.

But this is the first time that it's shown up on Tower as something
you can actually order, and the date listed should be within two
weeks, so maybe this time it'll actually be available and isn't just
vaporware?

I wonder if the Berg receivers will work with it?  [Berg says that
their receivers don't work with Futaba synthesized transmitter, with
both Berg and Futaba blaming each other for the reason.]

-- 
Doug McLaren, [EMAIL PROTECTED]
If ignorance is bliss, why aren't there more happy people in the world?
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