Interchangable frequency crystals
08-19-2008 | 09:59 AM
#26
RE: Interchangable frequency crystals
ORIGINAL: CGRetired
G'Morning y'sef!!
We got wind.. some stormy weather in the forecast, and.. the dreaded... work. I gotta be here, else I can't buy a new plane!!!
Had the usual egg-white omlet this morn.. veggies with ham and swiss cheese. Good and healthy!!
I was going to go to the Atlantic City air show but other things are getting in the way.. ha..
Later.
Dick.
G'Morning y'sef!!
We got wind.. some stormy weather in the forecast, and.. the dreaded... work. I gotta be here, else I can't buy a new plane!!!
Had the usual egg-white omlet this morn.. veggies with ham and swiss cheese. Good and healthy!!
I was going to go to the Atlantic City air show but other things are getting in the way.. ha..
Later.
Dick.
08-19-2008 | 11:14 AM
#27
RE: Interchangable frequency crystals
Boy oh Boy Bruce, sounds like you are picking on poor old CG. Went out for a few minutes this morning but then it started to rain so I packed up and said nuts, might as well go home.
08-19-2008 | 11:42 AM
#28
RE: Interchangable frequency crystals
ORIGINAL: goirish
Boy oh Boy Bruce, sounds like you are picking on poor old CG. Went out for a few minutes this morning but then it started to rain so I packed up and said nuts, might as well go home.
Boy oh Boy Bruce, sounds like you are picking on poor old CG. Went out for a few minutes this morning but then it started to rain so I packed up and said nuts, might as well go home.
08-19-2008 | 12:21 PM
#30
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From: El Paso,
TX
RE: Interchangable frequency crystals
ORIGINAL: carrellh
Those crystals actually are Futaba crystals. They are single coversion crystals for the electrifly park flyer receivers which have limited range.
Note the "Requires Futaba Single Conversion Crystal" comment in the description. In your bigger planes I'm almost positive you'll have dual conversion receivers which use a different crystal.
ORIGINAL: FatOrangeKat
Great planes has crystals for electrifly on Tower's site; they look just like Futaba crystals but are $5 less.
Great planes has crystals for electrifly on Tower's site; they look just like Futaba crystals but are $5 less.
Note the "Requires Futaba Single Conversion Crystal" comment in the description. In your bigger planes I'm almost positive you'll have dual conversion receivers which use a different crystal.
While crystals are different in single and dual convertion receivers, it does not neccesarily mean that the range of a single convertion receiver is lower than a dual convertion receiver, but I guess that in fact it depends on the price that you pay for a particular receiver.
Please read this:
http://www.bergent.net/SC-DC.pdf
08-20-2008 | 01:23 AM
#31
RE: Interchangable frequency crystals
I highly recommend crystals manufactured by Performance Devices:
http://www.performancedevices.com/
They offer better-than-OEM quality crystals and can fit most any brand of receiver, including Hitec, Futaba, JR, and Airtronics.
Their crystals are good enough that Tower Hobbies had previously been selling their Airtronics and GWS compatible crystals.
If you have a question about finding a crystal for your particular receiver, just e-mail or call the company. They're very knowlegable about RC crystals. I own a dozen or so of their Futaba dual conversion crystals and have never experienced anything but perfect performance while using them.
http://www.performancedevices.com/
They offer better-than-OEM quality crystals and can fit most any brand of receiver, including Hitec, Futaba, JR, and Airtronics.
Their crystals are good enough that Tower Hobbies had previously been selling their Airtronics and GWS compatible crystals.
If you have a question about finding a crystal for your particular receiver, just e-mail or call the company. They're very knowlegable about RC crystals. I own a dozen or so of their Futaba dual conversion crystals and have never experienced anything but perfect performance while using them.
08-20-2008 | 10:11 AM
#32
RE: Interchangable frequency crystals
ORIGINAL: bigedmustafa
I highly recommend crystals manufactured by Performance Devices:
http://www.performancedevices.com/
They offer better-than-OEM quality crystals and can fit most any brand of receiver, including Hitec, Futaba, JR, and Airtronics.
Their crystals are good enough that Tower Hobbies had previously been selling their Airtronics and GWS compatible crystals.
If you have a question about finding a crystal for your particular receiver, just e-mail or call the company. They're very knowlegable about RC crystals. I own a dozen or so of their Futaba dual conversion crystals and have never experienced anything but perfect performance while using them.
I highly recommend crystals manufactured by Performance Devices:
http://www.performancedevices.com/
They offer better-than-OEM quality crystals and can fit most any brand of receiver, including Hitec, Futaba, JR, and Airtronics.
Their crystals are good enough that Tower Hobbies had previously been selling their Airtronics and GWS compatible crystals.
If you have a question about finding a crystal for your particular receiver, just e-mail or call the company. They're very knowlegable about RC crystals. I own a dozen or so of their Futaba dual conversion crystals and have never experienced anything but perfect performance while using them.
08-20-2008 | 11:57 AM
#33
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From: Garland, TX
RE: Interchangable frequency crystals
ORIGINAL: alfredbmor
While crystals are different in single and dual convertion receivers, it does not neccesarily mean that the range of a single convertion receiver is lower than a dual convertion receiver, but I guess that in fact it depends on the price that you pay for a particular receiver.
Please read this:
http://www.bergent.net/SC-DC.pdf
While crystals are different in single and dual convertion receivers, it does not neccesarily mean that the range of a single convertion receiver is lower than a dual convertion receiver, but I guess that in fact it depends on the price that you pay for a particular receiver.
Please read this:
http://www.bergent.net/SC-DC.pdf
The tech notes for the GP Elictrifly receivers specifically say, "Approximately 890 feet of maximum range."
08-20-2008 | 12:23 PM
#34
RE: Interchangable frequency crystals
ORIGINAL: gaRCfield
These crystals are also 'guaranteed to work' in your brand receiver. I will be buying all my future crystals from them. Sometimes they are 2 for $8.
ORIGINAL: bigedmustafa
I highly recommend crystals manufactured by Performance Devices:
http://www.performancedevices.com/
They offer better-than-OEM quality crystals and can fit most any brand of receiver, including Hitec, Futaba, JR, and Airtronics.
Their crystals are good enough that Tower Hobbies had previously been selling their Airtronics and GWS compatible crystals.
If you have a question about finding a crystal for your particular receiver, just e-mail or call the company. They're very knowlegable about RC crystals. I own a dozen or so of their Futaba dual conversion crystals and have never experienced anything but perfect performance while using them.
I highly recommend crystals manufactured by Performance Devices:
http://www.performancedevices.com/
They offer better-than-OEM quality crystals and can fit most any brand of receiver, including Hitec, Futaba, JR, and Airtronics.
Their crystals are good enough that Tower Hobbies had previously been selling their Airtronics and GWS compatible crystals.
If you have a question about finding a crystal for your particular receiver, just e-mail or call the company. They're very knowlegable about RC crystals. I own a dozen or so of their Futaba dual conversion crystals and have never experienced anything but perfect performance while using them.
08-20-2008 | 02:55 PM
#35
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From: El Paso,
TX
RE: Interchangable frequency crystals
ORIGINAL: carrellh
You are absolutely right that "conversion' has nothing to do with range.
The tech notes for the GP Elictrifly receivers specifically say, "Approximately 890 feet of maximum range."
ORIGINAL: alfredbmor
While crystals are different in single and dual convertion receivers, it does not neccesarily mean that the range of a single convertion receiver is lower than a dual convertion receiver, but I guess that in fact it depends on the price that you pay for a particular receiver.
Please read this:
http://www.bergent.net/SC-DC.pdf
While crystals are different in single and dual convertion receivers, it does not neccesarily mean that the range of a single convertion receiver is lower than a dual convertion receiver, but I guess that in fact it depends on the price that you pay for a particular receiver.
Please read this:
http://www.bergent.net/SC-DC.pdf
The tech notes for the GP Elictrifly receivers specifically say, "Approximately 890 feet of maximum range."
890 feet is only reasonable for a park flier.
The fact that it could be a single convertion receiver (I do not know this particular receiver) is not the reason of the range. The range of receivers becomes of some filters that some manufacturers uses.
In fact Berg receivers are single convertion with full range, which means that you can fly a large plane as long as you can see it and been capable of maneuver it to bring it back.
There are many others single convertion receivers that are not full range, that is why I mentioned the price and quality of the receivers.
The purpose of bringing this back is to make a clearer idea of the difference between the single and double convertion receivers.
Thanks.
08-20-2008 | 03:24 PM
#36
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From: Poolesville, MD
RE: Interchangable frequency crystals
I flew an XPD-8 with a "park flyer" single conversion receiver with an 800' range...
BIG MISTAKE.
The little jet was very fast and quickly hit that limit which was really closer to 600', then tumbled out of the sky....
( Yes I could see it, no I could not tell which way it was oriented though... as I sometimes fly via response to inputs... ).
BIG MISTAKE.
The little jet was very fast and quickly hit that limit which was really closer to 600', then tumbled out of the sky....
( Yes I could see it, no I could not tell which way it was oriented though... as I sometimes fly via response to inputs... ).
08-20-2008 | 03:53 PM
#37
RE: Interchangable frequency crystals
JR full range 72Mhz FM/PPM receivers are single conversion by and large, and are as effective and reliable as Hitec, Futaba, or Airtronics dual conversion full range FM/PPM 72Mhz receivers by most accounts.
08-20-2008 | 03:57 PM
#38
RE: Interchangable frequency crystals
ORIGINAL: bruce88123
Guaranteed? WOW!! Does that GUARANTEE include replacing your plane? That would be a GUARANTEE.
ORIGINAL: gaRCfield
These crystals are also 'guaranteed to work' in your brand receiver. I will be buying all my future crystals from them. Sometimes they are 2 for $8.
These crystals are also 'guaranteed to work' in your brand receiver. I will be buying all my future crystals from them. Sometimes they are 2 for $8.
"I could crap in a box and mark it guaranteed if that will help you sleep at night, but the only thing you've bought is a guarantee!"
In all fairness, the two "guarantees" that Performance Devices offers on their website are both pretty good:
"Performance Devices guarantees all of our products to be in perfect condition upon purchase and defect-free for life to the user. In regard to our crystals, we would like all of our customers to send them back to us if your R/C plane, boat, car or truck experiences a crash. Because a crystal is a delicate electronic component, it should not be re-used after a severe impact. We replace these crystals at no charge without question and only ask for a small fee for shipping, packaging and handling.
For replacement of the crystal set, the user needs to do the following:
Send the suspect crystal single or set to Performance Devices Inc., PO Box 1043 Soulsbyville, CA. 95372, Attention QA Department along with $3.00 for return postage ($6.00 for customers outside of the United States). A replacement single or set will be returned immediately!"
Futaba won't replace my receiver crystals for $3 shipping and handling after a crash. This is a pretty cool guarantee.
The other guarantee involves 100% customer satisfaction:
"Our added guarantee: Buy this product and if you are not convinced after a thorough range check, send it back to us for a full refund!"
Performances Devices crystals are outstanding quality. The company stands behind their products. They are also knowledgable, helpful, and provide good customer service. They are a very specialized company that manufactures a very specialized product and they sell it for a very fair price.
08-20-2008 | 04:29 PM
#39
RE: Interchangable frequency crystals
ORIGINAL: bigedmustafa
Hehe, I admire gaRCfield's enthusiasm, I couldn't help but chuckle when I read this and remembered the scene from "Tommy Boy" where Chris Farley finally sells his first order of brake pads:
"I could crap in a box and mark it guaranteed if that will help you sleep at night, but the only thing you've bought is a guarantee!"
In all fairness, the two "guarantees" that Performance Devices offers on their website are both pretty good:
"Performance Devices guarantees all of our products to be in perfect condition upon purchase and defect-free for life to the user. In regard to our crystals, we would like all of our customers to send them back to us if your R/C plane, boat, car or truck experiences a crash. Because a crystal is a delicate electronic component, it should not be re-used after a severe impact. We replace these crystals at no charge without question and only ask for a small fee for shipping, packaging and handling.
For replacement of the crystal set, the user needs to do the following:
Send the suspect crystal single or set to Performance Devices Inc., PO Box 1043 Soulsbyville, CA. 95372, Attention QA Department along with $3.00 for return postage ($6.00 for customers outside of the United States). A replacement single or set will be returned immediately!"
Futaba won't replace my receiver crystals for $3 shipping and handling after a crash. This is a pretty cool guarantee.
The other guarantee involves 100% customer satisfaction:
"Our added guarantee: Buy this product and if you are not convinced after a thorough range check, send it back to us for a full refund!"
Performances Devices crystals are outstanding quality. The company stands behind their products. They are also knowledgable, helpful, and provide good customer service. They are a very specialized company that manufactures a very specialized product and they sell it for a very fair price.
ORIGINAL: bruce88123
Guaranteed? WOW!! Does that GUARANTEE include replacing your plane? That would be a GUARANTEE.
ORIGINAL: gaRCfield
These crystals are also 'guaranteed to work' in your brand receiver. I will be buying all my future crystals from them. Sometimes they are 2 for $8.
These crystals are also 'guaranteed to work' in your brand receiver. I will be buying all my future crystals from them. Sometimes they are 2 for $8.
"I could crap in a box and mark it guaranteed if that will help you sleep at night, but the only thing you've bought is a guarantee!"
In all fairness, the two "guarantees" that Performance Devices offers on their website are both pretty good:
"Performance Devices guarantees all of our products to be in perfect condition upon purchase and defect-free for life to the user. In regard to our crystals, we would like all of our customers to send them back to us if your R/C plane, boat, car or truck experiences a crash. Because a crystal is a delicate electronic component, it should not be re-used after a severe impact. We replace these crystals at no charge without question and only ask for a small fee for shipping, packaging and handling.
For replacement of the crystal set, the user needs to do the following:
Send the suspect crystal single or set to Performance Devices Inc., PO Box 1043 Soulsbyville, CA. 95372, Attention QA Department along with $3.00 for return postage ($6.00 for customers outside of the United States). A replacement single or set will be returned immediately!"
Futaba won't replace my receiver crystals for $3 shipping and handling after a crash. This is a pretty cool guarantee.
The other guarantee involves 100% customer satisfaction:
"Our added guarantee: Buy this product and if you are not convinced after a thorough range check, send it back to us for a full refund!"
Performances Devices crystals are outstanding quality. The company stands behind their products. They are also knowledgable, helpful, and provide good customer service. They are a very specialized company that manufactures a very specialized product and they sell it for a very fair price.
]
01-23-2009 | 10:12 AM
#41
RE: Interchangable frequency crystals
ORIGINAL: blgarcia82
What are the crystals used for and how do they help the truck? I have a landslide.
What are the crystals used for and how do they help the truck? I have a landslide.
They help the truck by making it work (or not work) as long as all other parts are functioning properly.
02-28-2009 | 08:39 AM
#42
My Feedback: (14)
RE: Interchangable frequency crystals
ORIGINAL: RCKen
No, you need to use the crystals made for the receiver by the manufacturer. Don't mix brand names.
Ken
No, you need to use the crystals made for the receiver by the manufacturer. Don't mix brand names.
Ken
Also... we hear a lot of discussion both ways on Futaba High Band/Low Band Tx and RX... some believe that you can put a high band crystal in a low band receiver or the other way... and that it will work... I have not tried to do that... Will they work but have problems or will they not work at all mixing high and low? In Futaba Thanks..
02-28-2009 | 09:01 AM
#43
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From: lake peekskill,
NY
RE: Interchangable frequency crystals
I hold a general class armature radio FCC license I can change crystals and repair rc equipment find a local HAM most will be happy to do this for you.
02-28-2009 | 09:30 AM
#44
RCU Forum Manager/Admin
My Feedback: (9)
RE: Interchangable frequency crystals
ORIGINAL: Richard39
Good morning Ken... Most of the guys at my flying field and at the LHS believe that you can use a Futaba Crystal in a HiTec receiver as long as they are the same frequency and DC... or the other way... We are not talking JR or Airtronics... Are they wrong?
Also... we hear a lot of discussion both ways on Futaba High Band/Low Band Tx and RX... some believe that you can put a high band crystal in a low band receiver or the other way... and that it will work... I have not tried to do that... Will they work but have problems or will they not work at all mixing high and low? In Futaba Thanks..
Good morning Ken... Most of the guys at my flying field and at the LHS believe that you can use a Futaba Crystal in a HiTec receiver as long as they are the same frequency and DC... or the other way... We are not talking JR or Airtronics... Are they wrong?
Also... we hear a lot of discussion both ways on Futaba High Band/Low Band Tx and RX... some believe that you can put a high band crystal in a low band receiver or the other way... and that it will work... I have not tried to do that... Will they work but have problems or will they not work at all mixing high and low? In Futaba Thanks..
The problem is that they might work. However, they are not going to be reliable. You may very well find that they are not reliable when you plane is in the air. It risking your plane worth it?? IMHO it's not worth it so why even mess with it??
Ken
02-28-2009 | 10:29 AM
#45
My Feedback: (14)
RE: Interchangable frequency crystals
Ken, thanks for the quick reply... is your answer to be the same for both of my questions?
That they may work but that they also may not... so why take the chance? I am good with that... First I would only use that set up in a park flyer or small airplane and never put cheap electronics in a nice airplane... Thanks..
That they may work but that they also may not... so why take the chance? I am good with that... First I would only use that set up in a park flyer or small airplane and never put cheap electronics in a nice airplane... Thanks..
02-28-2009 | 11:09 AM
#46
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From: OZark,
MO
RE: Interchangable frequency crystals
Ken,
I am an old flyer but getting back into sailplanes now. I am considering the Hitec Spectra synthysized transmitter to utilize my existing recievers. I am avoiding the new 2.4 stuff do to budget. ANY THOUGHTS? all my RXs are Futaba or Hitec. Sailplanes are often LONG distances from the TX as you know.
I am an old flyer but getting back into sailplanes now. I am considering the Hitec Spectra synthysized transmitter to utilize my existing recievers. I am avoiding the new 2.4 stuff do to budget. ANY THOUGHTS? all my RXs are Futaba or Hitec. Sailplanes are often LONG distances from the TX as you know.
02-28-2009 | 11:55 AM
#47
RE: Interchangable frequency crystals
Posted in two other locations.........
The synth module from Hitec works in the Futaba radios that have modules, 7C, 8C, 9C...
I use small synth receivers from Hobby city and absolutely love them... full range, small, never a glitch...
4 channel-
http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=5781&Product_Name=Corona _Synthesized_Receiver_4Ch_72Mhz_(v2)
6 channel-
http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=6599&Product_Name=Corona _Synthesized_Receiver_6Ch_72Mhz___(v2)
8 channel-
http://www.hobbycity.com/hobbycity/s...iver_8Ch_72Mhz
The synth module from Hitec works in the Futaba radios that have modules, 7C, 8C, 9C...
I use small synth receivers from Hobby city and absolutely love them... full range, small, never a glitch...
4 channel-
http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=5781&Product_Name=Corona _Synthesized_Receiver_4Ch_72Mhz_(v2)
6 channel-
http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=6599&Product_Name=Corona _Synthesized_Receiver_6Ch_72Mhz___(v2)
8 channel-
http://www.hobbycity.com/hobbycity/s...iver_8Ch_72Mhz
02-28-2009 | 12:50 PM
#48
RCU Forum Manager/Admin
My Feedback: (9)
RE: Interchangable frequency crystals
ORIGINAL: OzMo
Ken,
I am an old flyer but getting back into sailplanes now. I am considering the Hitec Spectra synthysized transmitter to utilize my existing recievers. I am avoiding the new 2.4 stuff do to budget. ANY THOUGHTS? all my RXs are Futaba or Hitec. Sailplanes are often LONG distances from the TX as you know.
Ken,
I am an old flyer but getting back into sailplanes now. I am considering the Hitec Spectra synthysized transmitter to utilize my existing recievers. I am avoiding the new 2.4 stuff do to budget. ANY THOUGHTS? all my RXs are Futaba or Hitec. Sailplanes are often LONG distances from the TX as you know.
Richard,
Yes, same answer for both questions. It's just not worth the risk.
Ken
02-28-2009 | 12:53 PM
#49
My Feedback: (14)
RE: Interchangable frequency crystals
EVAN-RCU... Does the Dual Conversion mean anything on these receivers? I ask because I use DC in all of my receivers and I noticed that not all of the three receivers that you showed are Dual Conversions.. Also... what is V2....?
please advise and thanks... Richard39
please advise and thanks... Richard39
02-28-2009 | 02:05 PM
#50
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From: OZark,
MO
RE: Interchangable frequency crystals
sorry about the double post. I was trying to get more than one opinion. However I got GREAT INFO as now I understand I can buy
Just a module for the 7A radio I have.
Thanks To EVAN- RCU and RCKEN (not he first time either of have been SO helpful to me!) I'll watch the doublepost business[]
Just a module for the 7A radio I have.
Thanks To EVAN- RCU and RCKEN (not he first time either of have been SO helpful to me!
) I'll watch the doublepost business[]
