Just a quick ask if anyone knows if you can buy the coax cable for pig tales as Iv just repaired one and discovered I have a couple more Id like to have a go at 
Ive seen people recommend rg316 alot for pigtails and antenna repairs
https://www.wifi-antennas.co.uk/rg316-coaxial-cable-per-metre
That’s answered that question 
Cheers buddy
Is this a common thing, i.e would I find it in my local electronics store ???
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Pass. Steve @SirGunner is your man (not physically 
)
You can buy it online, just google it and a million options will pop up. You might be able to buy it from an RF specialist but you wont find it in your local Currys 
Yah just been doing that and found these, very interesting
Ah I thought you were looking for the coax cable to make/repeair your own pigtails
If I were to choose between rg178 and rg316 I would go for the latter as it has the least loss
| Parameters | |
|---|---|
| Transmission Line | RG-178B/U |
| Code | RG-178B/U |
| Data source | DSE |
| Frequency | 5000.000 MHz |
| Length | 0.500 ft |
| Results | |
| Zo | 50.00-j0.10 Ω |
| Length | 1316.597 °, 22.979 ᶜ, 3.657213 λ, 0.152400 m, 7.314e+2 ps |
| VF | 0.695 |
| Line Loss (matched) | 0.562 dB |
| Loss model source data frequency range (results are extrapolated) | 50.000 MHz - 1000.000 MHz |
| Correlation coefficient (r) | 0.998461 |
| Parameters | |
|---|---|
| Transmission Line | RG-316/U |
| Code | RG-316/U |
| Data source | DSE |
| Frequency | 5000.000 MHz |
| Length | 0.500 ft |
| Results | |
| Zo | 50.00-j0.05 Ω |
| Length | 1316.595 °, 22.979 ᶜ, 3.657208 λ, 0.152400 m, 7.314e+2 ps |
| VF | 0.695 |
| Line Loss (matched) | 0.391 dB |
| Loss model source data frequency range (results are extrapolated) | 100.000 MHz - 1000.000 MHz |
| Correlation coefficient (r) | 0.973670 |
The small difference in loss between the two over a 6inch length at 5GHz might not appear to be much, but when you add connectors and an antenna which isn’t a 1:1 load then this can add up and impact the 25mW of power we all use
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To do that you would need the connectors and a crimping tool
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LoL I am but its always good to find barging, that said Nidge comment has given me food for thought 
I like the thought of crimping them, just pop a blob of solder in the hole you could pop a bit of heat shrink over the end…