Dennis Michael

Is it possible to change your frequency from one end of the band to the other without re-tuning, by just changing xtals? 10X radio

DM

vinnie

My Feedback: (1)

It's possible, but DON"T do it! Send it in and have it tuned. Why risk all that expensive equipment. The cost is cheap for the peace of mind and performance that it buys. Besides, it's illegal....

marv119

Absolutly,all you need to do is get another module.That is the reason for the module . No need to send it in for tuning. Marv

amcross

My Feedback: (2)

Dennis,
For your transmitter, by changing module, YES; by replacing the crystal in your module? No.

Ladyflyer

My Feedback: (2)

JR now TOO ?

Dennis Michael

AM, dOES THE 9Z able to change Freq, from one end of the band to the other. DM

Sport_Pilot

Talking transmitters or receivers here?

JohnVH

My Feedback: (38)

Thats odd, a brand new 10X system comes with a spare set of crystals on a different channel than the crystals in the module and rx, but no different module to put them in. How about that?

I have gone from channel 52 to 23, using the same module so far with no problem, got GREAT range.

Ladyflyer

My Feedback: (2)

Again the question is it POSSIBLE ? answer YES !
Is it LEGAL in the US for an unlicensed tech ? answer NO !
Is it smart ? DUH ! :stupid:
" My Maserati does 185 ,I lost my license and now I don't drive...."

(Joe Walsh , when he was wild )

JohnVH

My Feedback: (38)

legal? explain that one.

you can goto jail for changing channels on your transmitter???

I dont understand that.

Ladyflyer

My Feedback: (2)

Probably just get a warning or maybe a fine the first time they catch you .
It is not likely you will get caught . You are far more likely to cause a crash than to get caught. And both odds are low.

amcross

My Feedback: (2)

Dennis,A 9Z with a synth module can be changed from any freq in the 72MHz band to any other by a simple setting hcange in the radio.

A 9Z transmitter with a standard module can be changed by simply changing the module to one on any other channel on ANY BAND.

A 9z module must not have its crystal changed (in the US) by anyone but a certified technician. It is against FCC regulation to do it yourself.

John -- was the 10X you describe purchased in the US from a retailer who purchases through the legal distribution chain, or outside?

The FCC regulations are in place because, unlike other countries/continents, we have primary users spaced between our channels, so us bleeding onto another frequency has some potentially dire consequences. Some of the freq between us include construction cranes and other mechanization equipment that could result in significant injury/expense/etc if we interfere.

thomasb

Generally it begins with a FCC warning letter. In extreme cases it could end up resulting in a federal fine or imprisonment. It normally takes a written complaint from a citizen to get the ball rolling.

The FCC Part 95 Sub C document (R/C Rule 18) outlines the penalties:

§ 95.218 (R/C Rule 18) What are the penalties for violating these rules?
(a) If the FCC finds that you have willfully or repeatedly violated the Communications Act or the FCC Rules, you may have to pay as much as $10,000 for each violation, up to a total of $75,000. (See Section 503(b) of the Communications Act.)
(b) If the FCC finds that you have violated any section of the Communications Act or the FCC Rules, you may be ordered to stop whatever action caused the violation. (See section
312(b) of the Communications Act.)
(c) If a federal court finds that you have willfully and knowingly violated any FCC Rule, you may be fined up to
$500 for each day you committed the violation. (See section 502 of the Communications Act.)
(d) If a Federal court finds that you have willfully and knowingly violated any provision of the Communications Act, you may be fined up to $10,000, or you may be imprisoned for one year, or both. (See section 501 of the Communications Act.)

Here is the link to the Part 95 Docs. EVERY R/C'er should read the Sub part C section (95.201 - 95.225): http://www.access.gpo.gov/nara/cfr/w...7cfr95_00.html

For the latest in enforcement notices (recent FCC violator list), please see:
http://www2.arrl.org/news/enforcemen...2002/0615.html

Despite news to the contrary, we USA based 72/75Mhz R/C folks are not "legally" allowed to swap Tx Xtals. Doing so is in violation of Part 95 rules. Synthesized or removable RF modules are legal. Six meter ham users can swap until the cows come home too. Rx xtal swaps are free to everyone.

Please note that I did not write the rules. Just the messenger in this situation.

JohnVH

My Feedback: (38)

Hmm, learn something new everyday, That puts everyone I know in jail.

PHILLCO

My Feedback: (6)

BOY, WHAT A CAN OF WORMS THAT THREAD OPENED!

Ladyflyer

My Feedback: (2)

Every time :stupid:
Seems they DO need a test . Just so no one can claim "I didn't know THAT !

Dennis Michael

Ok Guys and Gals, I think I got the answer I was looking for and a whole lot more. Thanks for the education and the comic relief.

Dennis

Bryant330L

My Feedback: (126)

So, could I buy a new reciever and put my old crystal in it without sending it in? Just can't change the transmitter crystal? Is that legal? Safe?

Thanks

JohnVH

My Feedback: (38)

right

rcav8or

My Feedback: (5)

But be clear here...Futaba receivers have two different tunings, high band and low band. Anything from channel 11 to 36 is tuned midway between, and everything 37 to 60 is tuned midway between those two channels ( around channel 22 for low, and around 47 for high band. When you purchase them, you request a low or high band. Say you buy a receiver from a buddy on channel 20, and wanted to fly on 50, it probably would give you limited range. I asked once, and was told there's no way to tell from the outside, if you buy a receiver without a crystal, whether it's high or low, and the only check is to try it with one of each, with a range check, and see which has better range. I can do this, because I fly on 5 different channel, both high and low, but the average person might not be able to. Just something to be aware of when buying a used receiver...

I have been told that JR receivers will accept any channel crystal, and work just fine.

Bryant330L

My Feedback: (126)

Thanks for the info Roger. I am thinking of getting a new pcm reciever for my JR radio and I did not know if I could use the crystal out of my FM reciever or if I had to send it in to get it tuned.

amcross

My Feedback: (2)

Sure thing. PCM is transmitted on the FM band. PPM is really the exact same info as PCM, same band and everything, it is just that PCM is encoded whereas FM is not.

Bryant330L

My Feedback: (126)

Thanks AnnMarie...... Sure is nice to have you roaming this site!!

Have you checked my thread about the Glitches with my DP Extra? Any thoughts?

Thanks

s3nfo

My Feedback: (14)

Ladyflyer,

We certainly wouldn't want the Futuba rep telling us about FCC regs as they apply to JR now would we!

Your constant sniping at Ms. Cross is starting to sound like sour grapes, is getting tiresome and has killed what credibility you had, with me at any rate.

You once made a comment about men defending Ms. Cross just because she was a female presence on the board, seems you attack her just because she's a woman on the board.