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[DIY] Wifi modem and out door antenna

i have a old modem binatone dt 850w and found a outdoor unit antenna rusting from a old shop. 
i have marked the modem antenna wire , i tried to soldered the wire to the outdoor unit .
but still i felt i am doing some thing wrong. can some one help >? 

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i don't want to dive into the physics of such thing #yolo it and see if it works. proper work needs a LOT of calculations

if it was useful give it a like :) btw if your into linux pay a visit here  and i will be thankful if you send me an opinion here  

 

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Can't really see what you did, but it appears you didn't connect the ground to the antenna.

F@H
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Just now, Kilrah said:

Can't really see what you did, but it appears you didn't connect the ground to the antenna.

i just soldered the wire from modem to the steel board in antenna. dont know how to connect ground !! there is only one wire in modem i dont think there is a ground wire in it.

 

[EDIT] i found the ground wire in modem. due to old and rust the wire actually gone ! so i am about to replace that in few hours.

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The ground is the sheath of the coax cable. You have to remove the shrink tubing at the end to expose some and do like on the modem side, soldering the ground to the appropriate location on the antenna.

Blue = signal, pink = gnd.

 

Clipboard02.jpg.689c769958527015f7304eaa28c9bb66.jpg

F@H
Desktop: i7-5960X 4.4GHz, Noctua NH-D14, ASUS Rampage V, 32GB, RTX2080S, 2TB NVMe SSD, 2x16TB HDD RAID0, Corsair HX1200, Thermaltake Overseer RX1, Samsung 4K curved 49" TV, 23" secondary

Mobile SFF rig: i9-9900K, Noctua NH-L9i, Asrock Z390 Phantom ITX-AC, 32GB, GTX1070, 2x1TB NVMe SSD RAID0, 2x5TB 2.5" HDD RAID0, Athena 500W Flex (Noctua fan), Custom 4.7l 3D printed case

 

Dell XPS 2 in 1 2019, 32GB, 1TB, 4K

 

GPD Win 2

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Just now, Kilrah said:

The ground is the sheath of the coax cable. You have to remove the shrink tubing at the end to expose some and do like on the modem side, soldering the ground to the appropriate location on the antenna.

Blue = signal, pink = gnd.

 

Clipboard02.jpg.689c769958527015f7304eaa28c9bb66.jpg

thanks but i need to know will work ? i mean the signal range/quality will improve? i remember the stock antenna with modem was small. i think its 5dbi omni or less 

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Maybe, maybe not. We have no idea what the antenna you're attaching is, and it will depend on the quality of your wiring job.

F@H
Desktop: i7-5960X 4.4GHz, Noctua NH-D14, ASUS Rampage V, 32GB, RTX2080S, 2TB NVMe SSD, 2x16TB HDD RAID0, Corsair HX1200, Thermaltake Overseer RX1, Samsung 4K curved 49" TV, 23" secondary

Mobile SFF rig: i9-9900K, Noctua NH-L9i, Asrock Z390 Phantom ITX-AC, 32GB, GTX1070, 2x1TB NVMe SSD RAID0, 2x5TB 2.5" HDD RAID0, Athena 500W Flex (Noctua fan), Custom 4.7l 3D printed case

 

Dell XPS 2 in 1 2019, 32GB, 1TB, 4K

 

GPD Win 2

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