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Sit back with a beverage and let Bruce talk at you a while:
https://www.youtube.com/watch?v=j6LuEhuU-l8
https://www.youtube.com/watch?v=j6LuEhuU-l8
Boscam LCD5802 Monitor Observations
- Thread starter Gary E
- Start date
d4ddyo said:
I concur. The DJI AVL58 VTX is using whatever voltage the P2 is giving it. Not using the DJI hub kit on this one.
I did receive the Circlular Wireless helical antenna yesterday. Weather briefly co-operating this afternoon so I gave it a go with it mounted on the monitor along with the RX cloverleaf antenna. I was limited in elevation AGL on the account of a big black storm cell right above me. But I did take the P2 up to 120 meters AGL and out to 220 meters horizontal, and the monitor image was very clear with no interruptions or degrade in signal. I didn't go higher as I didn't want to take a chance on the P2 get sucked up in the storm cell influence. The 120 m. elevation X 220 m. horizontal excellent video signal compares to the previous test of 100 m. elevation X 30 m. horizontal where the video signal on the monitor broke up enough to be non-usuable when using the original monitor stick and DJI cloverleaf VRX antennas.
So, in summary, the new antenna has made quite an improvement at modest elevation and horizontal distances.
More to follow when the weather improves for a farther up and out test. Maybe tomorrow.
Hiway said:
I watched that video last week. It prompted me to make the easiest change in the FPV equipment. So, I stepped up to the pay window and got the Circular Wireless antenna. See my previous post.
Hiway said:
yeah... you're starting to speak a foreign language to me now. Like the poster above, the tx power is fed directly from the phantoms fpv slot... Its plug and play.
Dont get the dji avl58, its a boscam ts352 500mw tx, and its overpriced and heavy...
The TS353 400mw works fine, its a lot cheaper and lighter.
5km test with the ts353 and the Phantom 2.
https://www.youtube.com/watch?v=Te9VbVg9EUM
Boscam TS353 400mw: http://j.mp/1gJ6t7s
Boscam 7" RX-LCD5802 5.8GHz Diversity Receiver: http://j.mp/1lZuham
LCD Battery Charger: http://j.mp/1h3CreQ
The TS353 400mw works fine, its a lot cheaper and lighter.
5km test with the ts353 and the Phantom 2.
https://www.youtube.com/watch?v=Te9VbVg9EUM
Boscam TS353 400mw: http://j.mp/1gJ6t7s
Boscam 7" RX-LCD5802 5.8GHz Diversity Receiver: http://j.mp/1lZuham
LCD Battery Charger: http://j.mp/1h3CreQ
The 5k test video claims to be using a boscam 805 receiver with a panel antenna. That's comparing apples to oranges in my case. Guess it means I'll need to start from scratch.GhostMaster said:
Yes, but my point if view its the avl58 its a overpriced solution, it works but its bigger, heavier and generates more heat than the TS353 400mw tx.
GhostMaster said:
Too late for that.
GhostMaster said:
They don't look the same:
Boscam TS352 500MW
DJI AVL58 500MW
GhostMaster said:
Specs:
Boscam TS353 400MW
Size: 55 x 26 x 17
Weight: 42g
Current: 300MA
DJI AVL58 500MW
Size: 51 x 30 x 21
Weight: 42.5g
Current: 575MA
GhostMaster said:
Impressive test. I don't have that type of flat terrain in Southern Oregon. We are full of mountains, so long distance is not a priority for me.
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Gary E said:
I can get almost 100 meters on a tiny 25mw vtx on one of my mini quads with this monitor and a circular and skew planar- the 25mw vtx has a simple short wire antenna. Pretty amazing- it's all about hitting those sweet spots with volts and amps, and making sure the power is clean (whole other thread) :shock:
GhostMaster said:
I appreciate the info. But it is fairly generic with no details. You do not indicate where you reside, and where the test area was; what kind of terrain and folige the test was made in; what TX and RX antennas you used or are using; what altitude AGL. What channels are the TX and RX on? Your platform is a stock P2 or other?
For me, I would like to read some response to the issues from my first post of the thread.
Hiway said:
I can get almost 100 meters on a tiny 25mw vtx on one of my mini quads with this monitor and a circular and skew planar- the 25mw vtx has a simple short wire antenna. Pretty amazing- it's all about hitting those sweet spots with volts and amps, and making sure the power is clean (whole other thread) :shock:
Are you suggesting the DJI products, ie: P2, AVL58, DJI Cloverleaf antennas, are not producing/transmitting clean power? Not sure what the included faces suggest (agreement, disagreement, other).
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Gary E said:Hiway said:
I can get almost 100 meters on a tiny 25mw vtx on one of my mini quads with this monitor and a circular and skew planar- the 25mw vtx has a simple short wire antenna. Pretty amazing- it's all about hitting those sweet spots with volts and amps, and making sure the power is clean (whole other thread) :shock:
Are you suggesting the DJI products, ie: P2, AVL58, DJI Cloverleaf antennas, are not producing/transmitting clean power? Not sure what the included faces suggest (agreement, disagreement, other).
I have no idea how the DJI product works or performs- no experience- I was just emphasizing the main concerns to be aware of when tweaking on a vtx and verifying range and quality.
The wink is in agreement with your quoted post, and the shocked face is for the effort required to learn about sine waves and "clean" power
I see videos on youtube of people getting over 1000k using the AVL58 with clover leaf antennas. In facct I have the same antennas AND a turn spiral on RecB on the diversity.
http://youtu.be/ltKwvlVXc5o
https://www.youtube.com/watch?v=cfcxydhbs0I
Other than GhostWriter saying he can get over 1K with the Boscam 5802 diversity monitor/reciever I cant find any videos or pictures on the web to back that up.
I think we both have the same question... What part in our FPV chain is the weakest link? What is the biggest factor in our poor FPV range? The AVL58 or the Boscam RX-5802 Diversity?
http://youtu.be/ltKwvlVXc5o
https://www.youtube.com/watch?v=cfcxydhbs0I
Other than GhostWriter saying he can get over 1K with the Boscam 5802 diversity monitor/reciever I cant find any videos or pictures on the web to back that up.
I think we both have the same question... What part in our FPV chain is the weakest link? What is the biggest factor in our poor FPV range? The AVL58 or the Boscam RX-5802 Diversity?
I just just went out on a limb and purchased a standalone AVL58 receiver. My setup only came with the transmitter, hence my reason for needing a diversity monitor. When it arrives, it will be interesting to see if my range improves using the AVL58 receiver as opposed to the internal Boscam RX-5802 diversity reciever.
Chad,
I will interested in the test comparison of the AVL58 RX and the Monitor RX. I have an AVL58 RX standing by JIC (just in case).
Went out today, as the weather was better. At 100m AGL altitude, went out to 800m horizontal over a golf course with lots of trees, but somewhat flat, for this area anyway. The monitor reception was excellent with no degrade in quality. Brought the P2 back to about 30m horizontal and pushed it up to 300m AGL (the altitude limit programed in). Reception again was excellent with no degrade or washout in quality. That new RX antenna has made a ton of improvement.
I will interested in the test comparison of the AVL58 RX and the Monitor RX. I have an AVL58 RX standing by JIC (just in case).
Went out today, as the weather was better. At 100m AGL altitude, went out to 800m horizontal over a golf course with lots of trees, but somewhat flat, for this area anyway. The monitor reception was excellent with no degrade in quality. Brought the P2 back to about 30m horizontal and pushed it up to 300m AGL (the altitude limit programed in). Reception again was excellent with no degrade or washout in quality. That new RX antenna has made a ton of improvement.
Gary E said:
AWESOME! That's great news! Can you take a picture of the antennas you are using on the monitor and AVL58? Were you using diversity on the above flight? Finally, what channel combo are you now using?
I was in Diversity. The TX is on Channel 8 and the monitor in auto search locked in on C-1 which is a different frequency than the TX ch. 8. Go figure.
Interesting. I'm grateful you started this thread. I'm remaining optimistic that we'll both find an acceptable solution. Here are the antenna's I am using on top of the LCD5802. On the AVL58 I have a matching Blue Beam Clover leaf. Now its got me wondering if the 3 turn helical I am using isnt enough. I see yours is much larger. When I looked up antennas similar to yours on amazon and ebay, I came up with many option. There's a ton of variety, but all look basically the same. Whats crazy is the price ranges. they go for as little as $15 all the way up to $95, and they look nearly identical.
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