Not getting too far from the OPs original Q but I use LMR240 for all my attic n outside antennas! Longest run is 50ft. It routes easily and for my setup, not much 700/800 it works just fine!
RG6
- Thread starter Planeguysexploration
- Start date
RU55
Radio receiver
- Joined
- Jul 25, 2022
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- 58
Loss calculated for 100 feet of coax with SWR of 1.5 at 800 MHz.:
(Yes, I know SWR is not as important for receiving, but it makes a difference when calculating loss, transmit or receive.)
Belden 9258 (RG8X) 12.3 dB
Belden 8215 (RG6A) 8.9 dB
LMR-400 3.8 dB
So, at 800 MHz, 100 feet of RG6A has about 5.1 dB greater loss, compaired to LMR-400. Remember, every three dB loss represents cutting the power in half. 3 dB cuts the power in half, 5.1 dB is a significant difference.
Of course, the difference in loss at 6 feet is not much, but if you are running significant lengths of coax at high frequencies, you might want to consider better coax.
(Yes, I know SWR is not as important for receiving, but it makes a difference when calculating loss, transmit or receive.)
Belden 9258 (RG8X) 12.3 dB
Belden 8215 (RG6A) 8.9 dB
LMR-400 3.8 dB
So, at 800 MHz, 100 feet of RG6A has about 5.1 dB greater loss, compaired to LMR-400. Remember, every three dB loss represents cutting the power in half. 3 dB cuts the power in half, 5.1 dB is a significant difference.
Of course, the difference in loss at 6 feet is not much, but if you are running significant lengths of coax at high frequencies, you might want to consider better coax.
