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+-- Forum: Products (https://www.comfortforums.com/forum-3.html)
+--- Forum: GSM Module (https://www.comfortforums.com/forum-48.html)
+--- Thread: GSM module poor reception (/thread-4858.html)
- phil1155 - 02-17-2018
Hello ,I just installed a GSM4 module. I am struggling finding a good position for the antenna and get a better reception. The log indicates a lot of trouble/restore messages.The best I have so far is a signal strength 2.
1- Is there a way to lock the module on 2G?
2- My antenna is very closed to the roof. So adding the adm02 modules should not help me I guess. Would it be possible to expand the antenna cable and put it outside on the roof? Or would an external and amplified antenna would be a solution?Ant recommended product?Thank you for your
help
Philippe
- slychiu - 02-17-2018
Quote:1- Is there a way to lock the module on 2G?No it will lock onto the network of the sim card. If 3G is weak it should fallback to 2G
Quote:2- My antenna is very closed to the roof. So adding the adm02 modules should not help me I guess. Would it be possible to expand the antenna cable and put it outside on the roof? Or would an external and amplified antenna would be a solution?Ant recommended product?Thank you for your
ADM02 can still help by allowing the UCM/GSM4 module to be located in a better position
There are some who have just extended the antenna cable by cutting and joining the cablee, buy I am not sure how well that would work in general
We have another antenna which is a higher gain type see attached image
in our testing it has increased the level by 1.
- phil1155 - 02-17-2018
Thanks Chiu, I will find one antenna and try. I wonder I should maybe buy a repeater (I have also the reception problem with my cell phones). But there are bloody expensive.
- phil1155 - 02-19-2018
Chiu, what type of antenna connector is on the gsm4 module ( mmcx, mcx ??)
Thanks
- slychiu - 02-19-2018
Mmcx
- phil1155 - 02-22-2018
Just placed a better antenna. Got now a \"Strength 3\". Works fine now. Thanks Chiu
- slychiu - 02-23-2018
Great. Where did you get the antenna in case others need?
- phil1155 - 02-23-2018
http://www.mhzshop.com/shop/index.php?cl=details&anid=d484e08979ab10c19.50627593
This is the model I selected. Not a single trouble/restore in the last 12 hours.Works perfect now (voice and sms).Cheers
- slychiu - 02-24-2018
That is an interesting device. Did you have to change the connector to MMCX or doe it come with? It does not state that it has MMCX
- phil1155 - 03-01-2018
Sorry, I missed that.I had to buy a pigtail coming with a mcmx connector ( as the antenna comes with a different connector).Still working great with Strength 3.