General Installing A Xtal ?

Franko48

New Member
I have a Hitec electron 6 receiver and am wondering, does it make any difference as to how you install the xtal into the receiver? It has two pins and no guides so I figured it can be inatalled without any specific orientation. Any info would be appreciated.
 

Tony

Staff member
I am not sure what an xtal is, however, if it only has two pins, it is likely power and ground. So you will need to orientate it so that it has the proper polarity.
 

RandyDSok

Well-Known Member
If you were to use such old outdated equipment... you would need the crystal that matches the frequency that the transmitter and receiver were made to work at.... I would strongly recommend against using these old transmitter/receivers and wasting your money keeping very a very outdated technology working. The problems with interference alone should be enough reason to not use it.

You can get a inexpensive 2.4Ghz radio starting for around $50 or so
 

Franko48

New Member
My transmitter and receiver are both set up with channel 29 crystals compatible with futaba and the hitec receiver is also compatible with futaba. The crystal just has the two pins with no directional mark so I figure it must not matter how it is plugged into the receiver.
 

RandyDSok

Well-Known Member
Since it's over 20-30 year old technology... I doubt you'll find many people that can answer your question with any certainty... I'd guess that it isn't polarity sensitive.
 

Franko48

New Member
Since it's over 20-30 year old technology... I doubt you'll find many people that can answer your question with any certainty... I'd guess that it isn't polarity sensitive.
Yes, I agree with you. This technology is since 2008 so it is not extremely old. That is when all of this was bought new.
 

RandyDSok

Well-Known Member
In electronics... over 10 years IS considered extremely old, in fact at that time ( 2008 ), it was considered old tech even then with many of the radio manufacturers starting to adopt 2.4...

Spectrum introduced the first 2.4Ghz systems back in 2004 using their DSM technology. I think JR further developed DSM and added frequency hopping around 2007 dubbing it DSM-J. Futaba joined in about 2011 with their 2.4Ghz FASST system addressing some of the issues seen in Spectrum's implementation and was later developed into FHSS which has the same reliability that FASST brought but was able to be implemented at a lower cost. I couldn't find out when Hitec jumped on the bandwagon but it was after Futaba if I recall correctly.

Spectrum's initial implementation of DSM really only had two issues ( that have now long been addressed ). First was the receiver had a cheaply implemented power circuit that was prone to brown outs. The second was it's lack of frequency hopping, it would select only 2 channels on startup and then if those got busy, it'd again loose connection. As mentioned, these have since been addressed and now most if not all companies use some sort of frequency hopping technology that allows them to almost completely avoid most interference issues that are seen by any older AM/FM band radios that rely on single channel frequencies.

AM radios do still have a reason to exist... they are capable of long distance control where FM is line of site. Noisy electronics, electric motors ( from drills to oil well motors ) and in some cases even large engines still can take down any AM/FM based radio... Just crashing once is enough to pay for any lower cost 2.4Ghz system which can avoid those pit falls.
 
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