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Author Topic: lazer 4  (Read 2559 times)

pipercub1772

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lazer 4
« on: February 13, 2012, 11:53:27 am »
Hi , I have a Hitec  Lazer 4 fm   r/c transmiter is it ok to use a Hitec fm dual conversion receiver with it not sure what dual conversion means kind regards Allan
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malcolmfrary

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Re: lazer 4
« Reply #1 on: February 13, 2012, 12:05:06 pm »
As long as its on the right frequency, the RX doesn't really care what is doing the transmitting.  The "double conversion" refers to the way the receiver does its job - it is a way of tightening up the tuning to make sure that only the wanted signal gets in.  It does need the proper double conversion crystals.
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tr7v8

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Re: lazer 4
« Reply #2 on: February 13, 2012, 12:13:48 pm »
Dual conversion sounds like it could be 35Mhz which means it cannot be used in surface craft only aircraft. Dual conversion isn't generally used in boats anyway. 
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Jim

pipercub1772

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Re: lazer 4
« Reply #3 on: February 13, 2012, 12:29:08 pm »
thanks ,it is 40 meg,i think the transmiter has a has the single conversion crystal  not sure about the receiver but i got the receiver and its crystal new  both crystals say  40.685 having said all that the set up works on the bench i just dont want to interfere with anyone at the lakeside regards Allan
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Martin (Admin)

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Re: lazer 4
« Reply #4 on: February 13, 2012, 12:54:29 pm »
Quote from: malcolmfrary on February 13, 2012, 12:05:06 pm
As long as its on the right frequency, the RX doesn't really care what is doing the transmitting.  The "double conversion" refers to the way the receiver does its job - it is a way of tightening up the tuning to make sure that only the wanted signal gets in.  

It does need the proper double conversion crystals.


Yes. I had one of these radio too, good set but do a proper range check as my one did have a duff crystal.
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unbuiltnautilus

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Re: lazer 4
« Reply #5 on: February 13, 2012, 01:29:39 pm »
You can get Dual Conversion Hitec Receivers on 40mhz as well as 35mhz. They are usually  6 channel and higher.
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Subculture

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Re: lazer 4
« Reply #6 on: February 13, 2012, 01:58:15 pm »
Genuine Hitec dual conversion crystals have a blue label on the tab. Single conversion crystals have a green label.
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barriew

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Re: lazer 4
« Reply #7 on: February 13, 2012, 05:16:02 pm »
And you only need the Dual Conversion crystal in the RX - there are no dual conversion Tx crystals :-))

Barrie
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Netleyned

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Re: lazer 4
« Reply #8 on: February 13, 2012, 05:20:00 pm »
No such thing as a dual conversion transmitter.
It's the method used to process the received signal.

Ned
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pipercub1772

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Re: lazer 4
« Reply #9 on: February 13, 2012, 07:05:26 pm »
Thanks for the help guys, yes its got the blue  40/meg crystal so i am happy to proceed,just did not want to upset anyone at the waterside once again thanks for you're replyies kind regards Allan
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