HR4BTC on Nostr: Coax & transmission line loss in radio: When setting up a ham radio, choosing the ...
Coax & transmission line loss in radio:
When setting up a ham radio, choosing the right transmission line is all about trade-offs. Signal loss increases with both frequency and cable length. Cheaper options like RG-58 are flexible and affordable but introduce more signal loss, especially at higher frequencies. On the other hand, premium cables like LMR-400 offer much lower signal loss but come with a higher cost and reduced flexibility. The key is to balance these trade-offs by keeping cable runs short and selecting a line that fits both your operating frequency and budget.
Signal loss is measured in decibels (dB), a unit that quantifies the reduction in signal strength. A 3 dB loss cuts the signal in half, while a 10 dB loss means only 10% of the original signal remains. Every cable has trade-offs, so understanding dB helps you compare options and minimize losses for the best performance in your setup.
Meshtastic or reticulum mesh devices are transmitting and receiving in the 915 mhz range. The shorter transmission lines are preferable for this range as it lossy up at those frequencies.
#HamRadio #SignalLoss #Decibels #Antenna #rf #losses #db #amateurradio #radio #mesh #meshtastic #reticulum #rnode #sideband #rns #nomadnet
When setting up a ham radio, choosing the right transmission line is all about trade-offs. Signal loss increases with both frequency and cable length. Cheaper options like RG-58 are flexible and affordable but introduce more signal loss, especially at higher frequencies. On the other hand, premium cables like LMR-400 offer much lower signal loss but come with a higher cost and reduced flexibility. The key is to balance these trade-offs by keeping cable runs short and selecting a line that fits both your operating frequency and budget.
Signal loss is measured in decibels (dB), a unit that quantifies the reduction in signal strength. A 3 dB loss cuts the signal in half, while a 10 dB loss means only 10% of the original signal remains. Every cable has trade-offs, so understanding dB helps you compare options and minimize losses for the best performance in your setup.
Meshtastic or reticulum mesh devices are transmitting and receiving in the 915 mhz range. The shorter transmission lines are preferable for this range as it lossy up at those frequencies.
#HamRadio #SignalLoss #Decibels #Antenna #rf #losses #db #amateurradio #radio #mesh #meshtastic #reticulum #rnode #sideband #rns #nomadnet