Feather Receiver & Sanwa Tx  
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All Forums >> Radios, Batteries, Clubhouse and more >> RC Radios, Transmitters, Receivers, Servos, gyros >> Radio Manufacturer Direct Support >> Hitec/MultiPlex Radios- Ask Hitec Customer Service >> Feather Receiver & Sanwa Tx
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Feather Receiver & Sanwa Tx - 8/14/2002 3:23:23 PM   
bitmaniac


 

Posts: 10
Joined: 8/12/2002
From: Thessaloniki, GREECE
Status: offline 		Hi! Mike

First of all here is my Configuration:
Tx Sanwa (old) Pcm 6p 6channel 41Mhz (41.020Mhz crystal)
Rx Hitech Feather receiver /Single conv. 40Mhz (41.020 crystal)!

I use the above configuration to fly my LiteStik

The problem is that I have a dramatically reduced range (18-20meters)

As you have noticed I'm using my Sanwa Rx crystal at 41.020Mhz
although the hitech feather is at 40Mhz range!
I was thinking that was not a problem (or MAY BE IT IS?)
Would it be better to have a hitech crystal at 40Mhz range (on the receiver) and put a 40Mhz range on my Sanwa Tx too??

PS: what exactly is the job for theese crystals, as
I can figure out they have the roll of some kind of "filltering"
for the oscillator circuit on Rx & Tx?

Regards,
Alexander
GREECE
       Post #: 1

Feather Receiver & Sanwa Tx - 8/14/2002 8:37:37 PM   
MikeMayberry



Posts: 2844
Joined: 1/15/2002
From: Poway, CA, USA
Status: offline 		I would suggest you use the Hitec single conversion crystal only. This may solve your problem.

Mike.

(in reply to bitmaniac)
       Post #: 2

Feather Receiver & Sanwa Tx - 8/16/2002 12:29:40 PM   
bitmaniac


 

Posts: 10
Joined: 8/12/2002
From: Thessaloniki, GREECE
Status: offline 		Hi! Mikle
Thanks for you great help my frind!

a last question,Mike:
Do you suggest that I could use 41Mhz band hitech crystal (so I don't change my Tx crystal) ,although it is a 40Mhz receiver?

Have a nice day
Alexander

(in reply to bitmaniac)
       Post #: 3

Feather Receiver & Sanwa Tx - 8/19/2002 9:51:48 PM   
MikeMayberry



Posts: 2844
Joined: 1/15/2002
From: Poway, CA, USA
Status: offline 		If it is 40mhz then changing to 41mhz will affect the performance.

Mike.

(in reply to bitmaniac)
       Post #: 4

Feather Receiver & Sanwa Tx - 9/2/2002 3:01:15 PM   
bitmaniac


 

Posts: 10
Joined: 8/12/2002
From: Thessaloniki, GREECE
Status: offline 		Hi! Mike

Here we are ...back again!
After a loong search to find a suitable crystal to match hitec feather receiver to my Sanwa Transmitter I come to the following
conclusion:

My hitec has a 40.675Mhz crystal. The only Sanwa crystals I have found is 40.670 , 40.680 ,e.t.c (10Khz step)
I also noticed that hitec crystal is at 40.675 ...50.685. e.t.c
Is that right??? or I miss something???!!!??

Thanks Mike
What solution Do you suggest?

_____________________________

the old C=64 team!

(in reply to bitmaniac)
       Post #: 5

Feather Receiver & Sanwa Tx - 9/4/2002 1:40:10 PM   
bitmaniac


 

Posts: 10
Joined: 8/12/2002
From: Thessaloniki, GREECE
Status: offline 		Mike,

Is there a way of finding a 41.020Mhz Hitec crystal (single conv.)
or a 40.670Mhz one? (I own an original 40.675Mhz hitec crystal)

or ,is there a way of re-tuning my feather receiver at 41Mhz band?

Thanks
Alexander

_____________________________

the old C=64 team!

(in reply to bitmaniac)
       Post #: 6

Feather Receiver & Sanwa Tx - 9/11/2002 2:11:38 AM   
MikeMayberry



Posts: 2844
Joined: 1/15/2002
From: Poway, CA, USA
Status: offline 		Since we don't import any 40mhz equipment into the US, I don't know. Where do you live?

Mike.

(in reply to bitmaniac)
       Post #: 7

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All Forums >> Radios, Batteries, Clubhouse and more >> RC Radios, Transmitters, Receivers, Servos, gyros >> Radio Manufacturer Direct Support >> Hitec/MultiPlex Radios- Ask Hitec Customer Service >> Feather Receiver & Sanwa Tx
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