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Re: [Paparazzi-devel] Molex Pico blade, now Radio modem and video TX q u


From: Uttam Chandrashekhar
Subject: Re: [Paparazzi-devel] Molex Pico blade, now Radio modem and video TX q uestion
Date: Thu, 14 Feb 2008 18:18:56 -0800 (PST)

What is the default TX power setting on the Radiotronix 868 modems? I ordered just the modems, not the evaluation kit. How do I change the TX power setting?

-Thanks,
Uttam

----- Original Message ----
From: Uttam Chandrashekhar <address@hidden>
To: address@hidden
Sent: Friday, February 15, 2008 7:22:30 AM
Subject: Re: [Paparazzi-devel] Molex Pico blade, now Radio modem and video TX q uestion

Hi Jeremy,

Thats the problem, I'm worried about the high power, and although the Maxstream 9Xtend is programmable for that, it's very big and bulky for a small MAV. The Radiotronix 868's were ordered for a few days ago and tracking says delivery tomorrow. I'm looking forward to them, I also have on order PCB antennas like the once you mentioned, those should turn up pretty soon too. I save almost 18gms switching over to the lighter modem, and lots more space. Do you use a small patch antenna on the RX? What sort of range do you get? I was thinking of building a small patch antenna for it ( http://www.rc-cam.com/gp_patch.htm ). We require at lease 1 km in the air.

Unfortunately, the 900mhz video TX's are all pretty heavy, and almost all of them operate at 12V. Thanks for the links. I wish a 100mW non cased 900mhz video TX was available :( Only RF-Links has them, and I'm definitely avoiding them.

BTW, I have a local source now for all the 1.25mm crimps, housings, inserts and pre crimped leads. If anyone is interested in pre crimped leads, I'd be happy to help. I'd be even better if we could consolidate and put in a big order.


-Thanks,
Uttam


-



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