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[Solved] Cable Length for Dual Multi-Band LTE/HSPA/GSM Antenna: Comparing 10m vs 14m & Signal Loss Impact

BYQ77 9321 7
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  • #1 17117773
    BYQ77
    Level 9  
    Hello, I want to buy a dual multi-band antenna antenna-dual-multi-band-lte-hspa-gsm-plug-sma to strengthen the weak GSM signal in the countryside.
    However, I will need a cable that is either 10m or 14m long depending on how I run it. Does the length of the cable matter and is there a lot of signal loss along with the length? Should I choose a shorter route or it doesn't matter that much?
    I will be very grateful for the hint. I would like to add that I am a layman in these matters, so I need it grossly. :-)
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    #2 17117788
    KRY5PIN
    Level 37  
    The cable length has an effect on the drop, however with this number of meters it should not have an effect on performance.
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    #3 17117830
    Olek II
    Moderator  
    At these frequencies, the shortest and good quality antenna cables are used.
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    #4 17117844
    Brzymeq
    Level 32  
    Do as short as possible because already 10 meters is a lot. In addition, the 9dBi gain does not knock you down, first measure how strong you are catching the signal to choose the antenna, blind buying exposes you to costs.
  • #5 17117859
    BYQ77
    Level 9  
    Brzymeq wrote:
    Do as short as possible because already 10 meters is a lot. In addition, the 9dBi gain does not knock you down, first measure how strong you are catching the signal to choose the antenna, blind buying exposes you to costs.

    Brzymeq, thanks, and how can I measure the signal? And if I measure it, what's next? I understand that when buying an antenna, the higher the gain the better, right?
    As I wrote, I am a layman, which can be seen from my questions, but this is what the forum is for :-)
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    #6 17117873
    sm233
    Level 38  
    Assuming that H155 will be used as the cable
    Code: text Expand Select all Copy to clipboard
    
800 MHz dB/100m........................... 26.5
1000 MHz dB/100m......................... 30.9
1350 MHz dB/100m......................... 35.9
1750 MHz dB/100m......................... 42.3
2400 MHz dB/100m..........................49.6


    This is its attenuation at different frequencies. Calculate losses easily.
    I think that around 15 meters you will already be at zero.
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    #7 17117981
    Brzymeq
    Level 32  
    BYQ77 wrote:
    Brzymeq wrote:
    Do as short as possible because already 10 meters is a lot. In addition, the 9dBi gain does not knock you down, first measure how strong you are catching the signal to choose the antenna, blind buying exposes you to costs.

    Brzymeq, thanks, and how can I measure the signal? And if I measure it, what's next? I understand that when buying an antenna, the higher the gain the better, right?
    As I wrote, I am a layman, which can be seen from my questions, but this is what the forum is for :-)


    I recommend reading this section http://www.bez-kabli.pl/viewforum.php?f=14
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  • #8 17150061
    BYQ77
    Level 9  
    Many thanks for the quick and factual answers. Finally, I decided to use a different, more powerful antenna - a 2x ATK504 set with a 10m cable. The improvement is great. In a place where:
    - there is practically no internet on the phone and it's hard to get through,
    - via the Huawei B593u-12 modem with small antennas I have 1-2 lines (out of 5 possible), download 2Mbits, upload 1Mbit
    - after applying the above-mentioned I have 3-4 bars of antennas, download 16Mbit, upload 8Mbit

    Thanks again :-)
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Topic summary

The discussion centers on the impact of cable length on signal loss for a dual multi-band LTE/HSPA/GSM antenna. Users emphasize that while cable length does affect signal quality, a 10m cable is generally acceptable for performance. Recommendations suggest using the shortest possible cable to minimize loss, with specific attention to the quality of the cable. Users also discuss measuring signal strength before purchasing an antenna, highlighting the importance of selecting an antenna with appropriate gain based on measured signal levels. One user reports significant improvement in signal strength after switching to a more powerful antenna setup with a 10m cable.
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