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solentlife
Extreme 3D
Joined: 30 Dec 2010
Posts: 932
Location: Latvia / UK
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 Posted: Thu Sep 15, 2011 7:55 pm
Post subject: Old Pre 1985 JR SSS 35Mhz crystal pairs ? |
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I am trying to locate the older JR SSS Tx + Rx crystals for 35Mhz.
Prior to 1985, JR had their own Crystals that were offset by 2.5Khz compred to other systems. They used intermediate frequency 457.5Khz not 455Khz ....
In the mid 1986 when JR changed to 455Khz to fall into line with PCM bandwidth usage with other manufacturers... means I must have the older type to work in my JR SSS Propo.
Does anyone have such crystals or know of location ? McGregor in UK who are JR importers have none ... |
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lightning
Extreme 3D
Joined: 13 Aug 2011
Posts: 166
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Posted: Thu Sep 15, 2011 8:26 pm
Post subject: 35mhz |
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hi sollentlife.while browsing on ebay the other day i came across a bunch of old tx rx for sale.looked at close ups of the items and im sure there were some plug in crystals marked 35mhz.i just searched again for them but cant find the private seller and cant remember the search question damn it.but i know theyre there somewhere.im going to think on it and try again.memory is not what it used to be sorry about that.seller is in victoria australia,at least i remember that much. |
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solentlife
Extreme 3D
Joined: 30 Dec 2010
Posts: 932
Location: Latvia / UK
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Posted: Thu Sep 15, 2011 8:38 pm
Post subject: |
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I'm searching as well !!
It's a choice of modify case to take 2.4Ghz module or stay with the 35Mhz ...
It's a beaut of a radio even though it's not computerised.
Cheers |
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lightning
Extreme 3D
Joined: 13 Aug 2011
Posts: 166
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Posted: Thu Sep 15, 2011 9:44 pm
Post subject: correction |
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terrible mistake on my part the crystals are 36.330mhz sorry mate.my bad. |
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solentlife
Extreme 3D
Joined: 30 Dec 2010
Posts: 932
Location: Latvia / UK
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Posted: Thu Sep 15, 2011 9:52 pm
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no prob ....
Probably going to have to shleve the gear or swap out the module to 2.4Ghz ..............
The FrSky module is suitable with slight modification to the metal back case. |
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nick_onelove
Extreme 3D
Joined: 01 May 2011
Posts: 842
Location: Mendocino County, CA, United States 21 years old
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Posted: Thu Sep 15, 2011 10:12 pm
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That'd be cool to install a 2.4gHz module in it. Old-school vintage looks with modern technology inside; isn't that basically the definition of steampunk? |
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lightning
Extreme 3D
Joined: 13 Aug 2011
Posts: 166
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Posted: Thu Sep 15, 2011 10:57 pm
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steampunk .thats a new one ,or maybe im just showing my age.then again i do live in the bush.i wonder what horsepunk would denote? or maybe stonepunk or woodpunk..........aww i have to stop ;killing myself. |
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pjdog
Extreme 3D
Joined: 12 Jan 2010
Posts: 2073
Location: Hudson, Florida, USA
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Posted: Fri Sep 16, 2011 1:38 am
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waterpunk |
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solentlife
Extreme 3D
Joined: 30 Dec 2010
Posts: 932
Location: Latvia / UK
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Posted: Fri Sep 16, 2011 7:55 am
Post subject: |
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| nick_onelove wrote: | | That'd be cool to install a 2.4gHz module in it. Old-school vintage looks with modern technology inside; isn't that basically the definition of steampunk? |
Jr Technical themselves say that module design has not changed and that it will work.
The radio is my old 1980's job that i used for display flying and was the Rolls royce of gear then ... 8ch, with mixing / all sorts before computerised took over.
It has a special place with me and would be really nice to have it in use again. I sent it to JR Tech guy in UK to check over / service and he gave it a new lease of life. It's heavy Tx ... real electronics packed inside ! But the stick feel and balance is spot on. Sadly since then the xtals have apparently failed.
The FrSky 2.4Ghz module will fit but needs a slight mod to the metal back of the case. It's a few thou too tight and a file of the edge would be enough. I tried it without case back and the pins are slightly out and contact needs sorting. But i don't think it a big job.
Lets see what comes from my enquiries ... I must admit it's not for Heli ... its for Fixed wing even though I used to fly my nitro Heli on it in the 80's. |
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