máy thu phát dữ liệu video khinh khí cầu độ cao

TX900 được khuyến khích.
We also have a buyer from European clients to use this model.
They do space weather monitoring, they need wireless video transmission equipment to monitor their equipment and download data.
The person also can upload the control command for some experiment types of equipment from the ground receiver to the balloon.
The bandwidth is 20mbps, is that ok for you?

Cảm ơn. TX900 is recommended.

khách hàng:
Do you have a datasheet? Could you send me the antennas that work with this video transceiver? Do you have any compatible camera? How many cameras can we use with just one transceiver? Do you have a battery system or power system for the transceiver? Our flight will be 6 hours approx. Do you have batteries that will long 6 giờ?

iVcan: Our battery is 7AH, normally we tested time is 2~4 hours, no problem. If you buy a 15AH battery, it should support 4~8 hours. Please check the attached picture.
The 10W PA transmitter and receiver need 3A@28V (24loại khoảng cách tùy chọn), please try to source at your side.

khách hàng:
This flight will be without tribulation. So we will power on all the equipment right before the flight.

Về máy phát video, những tần số có sẵn là gì? Chúng ta có thể chọn 2.4 GHz as an option or it has to be 1.4GHz or 800MHz?
Cũng thế, do you provide RF cable from the video transmitter to the antennas?

iVcan:
1. There are three frequencies to choose from. If you choose 2.4G, then we will arrange the 2.4G Power Amplifier inside and the 2.4G transmitter and receiver antenna. So you should confirm which frequency you need before delivery. Ăng-ten được tùy chỉnh theo tần số này.

2. We can offer you the RF cable from the transmitter to the antenna, how long do you need it for? It will be easy to have interfered if the cable is too long. So how long do you really need it for the best installation?

khách hàng:
That would be perfect. I guess that sweeping the frequency to 2.4GHz will not affect the link budget and we still have 10W and 150Km coberture range?
Regarding RF cable we will need about 3m cable because we will put the video transmitter in the middle of the capsule and this has a 2.5m radius so 3m approx.

iVcan:
Về cáp RF, our engineer doesn’t recommend that you use so long. Sẽ giảm 0,5dB cho cáp RF một mét. For the 3-meter RF cable, the signal strength will be reduced by 1.5 dB.

In order to support long-distance at 150km, Can you use an RF cable that is less than 1 mét?

Trong thực tế, the transmitter is very small, tốt hơn là giữ một khoảng cách ngắn từ máy phát đến ăng-ten của máy phát. Cáp cấp nguồn cho máy phát và cáp ethernet từ máy ảnh đến máy phát có thể dài hơn vì không bị suy hao như cáp RF.

khách hàng:
I will check with the structure team that we need to put the video transmitter as close to the antenna as possible and get back to you with the RF cable length.

The system team asked me about the attachment system for the S transmitter that will be inside the capsule. Do you have any mounting brackets or recommendations? Ideally, the video transmitter will be placed inside a rack.

iVcan:
Regarding how to install it, vui lòng kiểm tra hình dưới đây.

There are four screws hole in the metal box, above the picture red arrow. It also can be bound by some cables like the one below.

khách hàng:
Trong lần ra mắt vừa qua, chúng tôi đã sử dụng một 1.2 GHz video transmitter to transmit images from ​​the stratosphere to the ground. Chúng tôi không hài lòng với kết quả đạt được và chúng tôi đang tìm kiếm một máy phát video có các đặc điểm sau: ​​1.2ghz frequency, FULL HD, Công suất RF lớn hơn 500mw, trọng lượng dưới 100gr và mức tiêu thụ không quá 500ma.

iVcan:
May I know what is the distance from the ​stratosphere to the ground?
From the internet, I get that the distance is from 8km to 50km.
Chúng tôi cũng cung cấp một mô hình tương tự cho Dự báo và Quan sát Thời tiết của Tây Ban Nha bằng Bóng bay Hydro trong Khí quyển, cần 150km.
The above model TX900-5W-50km is recommended.
​Your need: 1.2ghz frequency FULL HD, Công suất RF lớn hơn 500mw, trọng lượng dưới 100gr và mức tiêu thụ không quá 500ma.
TX900-5W050km: 1.4Ghz frequency, Camera Full HD 1080P HDMI hoặc ethernet, điện RF 2 watt, trọng lượng là 142 gram.

I had a previous client with an application similar to yours. He used a hot air balloon to rise 50 đến 80 kilometers above the ground to monitor the environment. He just bought our long-distance wireless video transmitter and receiver to monitor whether the scientific instruments in the balloon are normal.