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May 20, 2010, 08:03 PM
First to go over 106K feet
Crist Rigotti's Avatar
Quote:
Originally Posted by aviatordave
Christ -

How old is your AR7000? I got mine right when Spektrum came out. Are the newer rx's more robust?
Mine is 1 1/2 years old. It does have the data port. Does yours?
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May 20, 2010, 08:06 PM
I AP'd myself again......
aviatordave's Avatar
Quote:
Originally Posted by Crist Rigotti
Mine is 1 1/2 years old. It does have the data port. Does yours?
No, but I need to get a new one if i want RSSI
May 20, 2010, 08:08 PM
First to go over 106K feet
Crist Rigotti's Avatar
Quote:
Originally Posted by hdphil
i did the same mod for my dX6, when i put a 6db between the DX6 and the transmitter, the small green "TX" light went off fairly quickly, with a 3 db it lasted a little longer, now I'm running it without any attenuator, works great! and the 6 db 2 watt attenuator on the output gets warm. i was also concerned that the attenuator may also limit the dx6's ability to find a clean channel.
I'm thinking the dx7 must have more power output.
The green light on the booster goes dim after a few seconds. This is normal.
I would be careful with how much power you put in the input of the booster. The specs say 9-13db is optimal. The max input is 20db.
I don't get that you have a 6db attenuator on the output. The output of what? the transmitter or the booster?
May 20, 2010, 08:37 PM
Registered User
oh, sorry about that
i used the 2 watt 6db attenuator on the output of the amp,(i didn't want burn out my test setup) along with about 24db more of attenuation before i measured it with a detector.
i did notice when i added a 3db attenuator to the input of the amp, the output also decreased by pretty close to the same amount.

philip
May 21, 2010, 11:48 AM
Registered User
nm. I mis-read.
May 26, 2010, 08:33 AM
FPV Desert Beta Test Center
CRIST

Couple questions.

How much time have you run up on the system?
Any problems?
Have you used it next to other 2.4 radios to see if there may be any conflict?

Thanks!
May 26, 2010, 09:06 AM
First to go over 106K feet
Crist Rigotti's Avatar
Quote:
Originally Posted by Gary Evans
CRIST

Couple questions.

How much time have you run up on the system?
Any problems?
Have you used it next to other 2.4 radios to see if there may be any conflict?

Thanks!
Gary,
I've run this system for hours with no problems.

I haven't use it next to another 2.4 radio because I usually fly out of my backyard. Now that the weather is getting better and my set up (plane, OSD, etc) is working well I can get with some other flyers and do that kind of test. I'll post the results here when they are known.
May 26, 2010, 10:06 AM
FPV Desert Beta Test Center
Are the connectors on the amp sma or rp-sma?
May 26, 2010, 10:09 AM
First to go over 106K feet
Crist Rigotti's Avatar
Quote:
Originally Posted by Gary Evans
Are the connectors on the amp sma or rp-sma?
The input is SMA the output (antenna connector) is RP-SMA
May 26, 2010, 11:52 AM
Videopilot
Derek_S's Avatar
What a cool thread. I hear of this but never saw such detailed documentation.

I absolutely love my JR9303 2.4 but I bought a futaba 9CAP when i decided to try FPV. I sure am not fond (or use to) the Futaba, so I would love the ability to just use 2.4.

So is the only disadvantages that you use more TX energy (for the booster) and that if you do loose signal, it is an immediate lockout instead of analogue fade? Also, can you still use RSSI monitoring on 2.4 Rx's through an OSD?
May 26, 2010, 12:18 PM
First to go over 106K feet
Crist Rigotti's Avatar
Quote:
Originally Posted by Derek_S
What a cool thread. I hear of this but never saw such detailed documentation.

I absolutely love my JR9303 2.4 but I bought a futaba 9CAP when i decided to try FPV. I sure am not fond (or use to) the Futaba, so I would love the ability to just use 2.4.

So is the only disadvantages that you use more TX energy (for the booster) and that if you do loose signal, it is an immediate lockout instead of analogue fade? Also, can you still use RSSI monitoring on 2.4 Rx's through an OSD?
Yes, you will use more energy because of the higher load on the battery. You don't get something for nothing.

I would guess that the lockout would be the same with or without the booster.

Using the booster wouldn't change whether you can use RSSI or not.
May 26, 2010, 12:57 PM
Registered User
Crist with tha same booster i have flew for 6km on a Futaba T7C with R617FS. Unfortunately I no longer have the video online.

I used a 5dBi omnidirectional.
May 26, 2010, 01:19 PM
FPV Desert Beta Test Center
Quote:
Originally Posted by Neo360
Crist with tha same booster i have flew for 6km on a Futaba T7C with R617FS. Unfortunately I no longer have the video online.

I used a 5dBi omnidirectional.
Do you use a attenuator on the 7C and if so which one? Have you used yours next to other 2.4 systems?
May 26, 2010, 01:26 PM
Registered User
Quote:
Originally Posted by Gary Evans
Do you use a attenuator on the 7C and if so which one? Have you used yours next to other 2.4 systems?
No, never attenuator, i have connected the Booster 1W directly to the Radio Pcb Board with U.Fl pigtail to Rp-Sma.

Now i use the LRS by Thomas, but but until I used it I never had any problems.
May 26, 2010, 01:45 PM
FPV Desert Beta Test Center
Quote:
Originally Posted by Neo360
No, never attenuator, i have connected the Booster 1W directly to the Radio Pcb Board with U.Fl pigtail to Rp-Sma.

Now i use the LRS by Thomas, but but until I used it I never had any problems.
Did you experience any conflicts with other nearby 2.4 RC radios.


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