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Radio and reciever frequency question

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Radio and reciever frequency question

Old 02-14-2007, 12:49 PM
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silvastang
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Default Radio and reciever frequency question

Hello, I am new to the plane game and thisd is my first post. Just starting out in RC gas planes, have not even flown once yet, still putting together all my equipment. I just got a airtronics RD6000. I have been reading on line and towerhobbies says that if you are going to change crystals in your TX you should send it in to have it tuned. Is this needed? and if so is this true for the receiver also? Hope someone can help !!!Thanks
Old 02-14-2007, 01:21 PM
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MinnFlyer
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Default RE: Radio and reciever frequency question

You can change the crystal in your Rx with no problem, but the Tx needs to be fine-tuned. If your Tx is on an aircraft frequency and your Rx is on a different freq, just change the Rx to match the Tx
Old 02-14-2007, 01:28 PM
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Default RE: Radio and reciever frequency question

also it's not leagal according to the FCC to change transmitter freq. without having a certified tech. do it
Old 02-14-2007, 01:48 PM
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silvastang
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Default RE: Radio and reciever frequency question

Thanks for the info.
Old 02-14-2007, 03:39 PM
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silvastang
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Default RE: Radio and reciever frequency question

Need help. I am having a problem locating a flight pack with channel 60 receiver to match my Tx. Any suggestions were to look? I have already check with tower hobbies.
Old 02-14-2007, 04:31 PM
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Rodney
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Default RE: Radio and reciever frequency question

When you buy a flight pack, you should be able to tell the seller what channel you want it on. They should be able to include the proper crystal to put in the receiver to make it match up to your transmitter.
Old 02-14-2007, 04:43 PM
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silvastang
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Default RE: Radio and reciever frequency question

The problem with tower hobbies, is that the flight pack with channels available does now show my Tx channel as available but if you go to receiver crystals only it shows my channel. My buddy says the problem is that the flight packs are prepackaged and a big outfit like tower wouldn't do the custom match requested crystal with flight pack. I was hoping for an on line store that would. Thanks
for the reply.

Dave S.
AMA#877145
Old 02-14-2007, 05:09 PM
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Villa
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Default RE: Radio and reciever frequency question

Hi silvastang
It looks like you will have to order a flight pack plus the crystal you need. The receiver crystal is usually external to the receiver so it can be changed very easily.
Old 02-14-2007, 08:19 PM
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Default RE: Radio and reciever frequency question

try servocity.com
Old 02-14-2007, 10:29 PM
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JimO
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Default RE: Radio and reciever frequency question

Try Advantage Hobby, Len is very willing to assist and no charge for shipping. Call customer service and tell them what you want.

Old 02-17-2007, 02:49 PM
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pt19 flyer
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Default RE: Radio and reciever frequency question

hi
per FCC it is illegal to change crystals in a TX unless it is equipped with a RF module which is removable and replaceable. these are the total RF component of the TX. they plug into the back of the TX

so two reasons not to attempt it, it's illegal and you would probably end up losing your airplane or causing someone else to crash to to off frequency operation.

good luck and happy flying

pt19 flyer
Old 02-17-2007, 08:14 PM
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KI8FR
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Default RE: Radio and reciever frequency question

You tx is only 1/4 of a wot.. You can not do a crystals chang to radio that are 1/2 wot or more.. You can do the chang and be legal. You can go to www.fcc.org or www.arrl.com and read all about it..
Old 02-18-2007, 10:02 AM
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Rodney
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Default RE: Radio and reciever frequency question

tellspin 37, I'm afraid you are giving out bad info in the above. If you check the FCC regulations, the RC band (72 and 75 MHZ bands) have restriction on changing a transmitter crystal regardless of the power out. They must be type accepted. You are confusing regulations pertaining to HAM radio with RC. It is NOT leagle to change the transmitter crystal in the USA without having the proper testing/tuning done by an authorized service.

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