Converting to 75 MHz
Moderator: Pedro Egea
Converting to 75 MHz
I hope the CAN or USA sailors can help me here. I have a Futaba 3VC Tx and the FP-R113i Rx, on 40 MHz. The Tx uses an RF module (FP-TU-FM 40), so in theory I can plug in a 75 MHz module, and if I get a 75 MHz Rx, I can sail in the USA IOM Nationals in June
Those fine folks at Tower Hobbies tell me on their Web site that they have a 75 MHz Tx RF module, part number RF-PK-FM, but it isn't clear whether it will fit the 3VC. Not too surprising I guess, since the 3VC isn't on sale in America, but it does look to be the right size and shape. I also notice that their tech notes say the crystal is pre-installed... Does that mean I can't change the crystals of Tx and Rx to avoid a clash at the pond?
Has anyone any experience of changing their Futaba Tx RF module?
Those fine folks at Tower Hobbies tell me on their Web site that they have a 75 MHz Tx RF module, part number RF-PK-FM, but it isn't clear whether it will fit the 3VC. Not too surprising I guess, since the 3VC isn't on sale in America, but it does look to be the right size and shape. I also notice that their tech notes say the crystal is pre-installed... Does that mean I can't change the crystals of Tx and Rx to avoid a clash at the pond?
Has anyone any experience of changing their Futaba Tx RF module?
Chairman
IOMICA Executive
IOMICA Executive
-
- Posts: 256
- Joined: 26 Nov 2003, 07:25
- Sail number: USA 12
- Design: Which One
- Location: USA 12
Lester, chances are very good that the module will fit. In europe, the same (or very similar) radios are marketed under different model #'s. I use JR, and the modules that the Euro radios have are the same casing as the ones in the US. I'd say order it and if it does not fit, Tower will accept a return.
If you cannot get yours converted, I have a spare JR that will easily program to your boat.
See you in June.
If you cannot get yours converted, I have a spare JR that will easily program to your boat.
See you in June.
Steve Landeau
AMYA 10859
IOM USA 112
Finn USA 112
Cal 25 #548
AMYA 10859
IOM USA 112
Finn USA 112
Cal 25 #548
-
- Posts: 24
- Joined: 24 Nov 2003, 14:16
- Location: USA 269
-
- Posts: 82
- Joined: 29 Nov 2003, 20:45
- Sail number: CAN 28
- Design: Vancouver
- Location: North Vancouver, BC
3CV
Hi Lester I have done some reserch on this and have found the US equialent to be the 3PJ. This is a pistol grip version as that is what the car enthusiasts use. So providing the TX module fits this it should fit the 3VC.
Hope this is of some help.
Hope this is of some help.
Nigel Ashman
CAN 328
CAN 328
Thanks for your replies! Ken Binks has explained to me that the "standard" Tx 75 MHz RF module is tuned to a specific spot frequency, and (unlike our 40 MHz band in GBR) if you need a different frequency spot in the 75 MHz band, you need another RF module... Makes it a rather expensive crystal! So I'm working on plan "B".
Chairman
IOMICA Executive
IOMICA Executive
My Question is have the USA regatta management researched the possibility of a temperory dispensation to use selected 40 Mhz frequencys for the duration of the regatta? The argument that a transmitter of such low power in such a remote locatation will not impact on any other user may carry some weight. That is unless using 40 Mhz in the US may set off WW III.
DO IT NOW BEFORE IT`S TOO LATE!
-
- Posts: 256
- Joined: 26 Nov 2003, 07:25
- Sail number: USA 12
- Design: Which One
- Location: USA 12
I was checking into what the US was doing with 40 Mhz a couple years ago, and what I found was that it is assigned to "extra terrestrial communications research"....IanHB wrote: My Question is have the USA regatta management researched the possibility of a temperory dispensation to use selected 40 Mhz frequencys for the duration of the regatta? The argument that a transmitter of such low power in such a remote locatation will not impact on any other user may carry some weight. That is unless using 40 Mhz in the US may set off WW III.
Steve Landeau
AMYA 10859
IOM USA 112
Finn USA 112
Cal 25 #548
AMYA 10859
IOM USA 112
Finn USA 112
Cal 25 #548
Lester:
I have a JR Radio X-756. The extra 75mhz module that I have will not be used at Nationals and so you are welcomed to use if it fits your radio equipment which it probably does. I will also have a 75mhz receiver available as well to go along with the module. Just let me know if needed.
I only have a few frequencies on 75mhz but I am sure that all who will be present we will come up with something.
Looking forward to seeing you again at Nationals. Also great to see that Graham has commited to join in on the fun. It will be my first opportunity to meet and sail with him in person.
I have a JR Radio X-756. The extra 75mhz module that I have will not be used at Nationals and so you are welcomed to use if it fits your radio equipment which it probably does. I will also have a 75mhz receiver available as well to go along with the module. Just let me know if needed.
I only have a few frequencies on 75mhz but I am sure that all who will be present we will come up with something.
Looking forward to seeing you again at Nationals. Also great to see that Graham has commited to join in on the fun. It will be my first opportunity to meet and sail with him in person.
Good Sailing ~~~~~~~~~~~~~~~~ _/)
Mark Cooper
Ericca USA#199
AC USA#81
Victoria USA#150
Footy # 27
LandYacht
Mark Cooper
Ericca USA#199
AC USA#81
Victoria USA#150
Footy # 27
LandYacht