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 coax for the antenna

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43CT016
Alan Pilot
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skyrider
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Call Sign : 26-CT-4654
Posts : 359
Times Thanked : 2
Join date : 2022-09-25
QTH or Location : Preston, Lancs.
Equipment Used : UNIDEN 100, midland alan 78 plus multi + mag mount , silver rod
Age : 64

coax for the antenna Empty
PostSubject: coax for the antenna   coax for the antenna Icon_minitimeTue Mar 21, 2023 3:38 pm

Hi what  is the best coax to use with a silver  rod for good performance is it the 8x thanks  Smile
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13oots2
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Call Sign : 26-CT-4694, M7EUS
Posts : 232
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Join date : 2022-11-13
QTH or Location : Dorchester UK
Equipment Used : Yaesu FT950, 66FT Endfed Antenna, Various Other Bits and Pieces
Age : 57

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeTue Mar 21, 2023 3:46 pm

It all depends on the length of your run, if it is a short length a good quality RG58 would be fine.
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skyrider
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Call Sign : 26-CT-4654
Posts : 359
Times Thanked : 2
Join date : 2022-09-25
QTH or Location : Preston, Lancs.
Equipment Used : UNIDEN 100, midland alan 78 plus multi + mag mount , silver rod
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PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeTue Mar 21, 2023 9:43 pm

Hi  1300ts2 the length of coax im running is 8 metres and im using rg 58 at the moment  coax for the antenna 1f609 and the performance is up and down thats why i was thinking of using the thicker stuff What a Face
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13oots2
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Call Sign : 26-CT-4694, M7EUS
Posts : 232
Times Thanked : 14
Join date : 2022-11-13
QTH or Location : Dorchester UK
Equipment Used : Yaesu FT950, 66FT Endfed Antenna, Various Other Bits and Pieces
Age : 57

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeTue Mar 21, 2023 10:42 pm

There are coax loss calculators available online, I did a quick search, and it threw up quite a few. Might be worth using one and punching in a few numbers.

RG213 might be an option, but it quickly gets expensive, 50 m will set you back about £85.
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Alan Pilot
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Call Sign : 163-CT-220...MW7TTA
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Equipment Used : Yaesu FT-991A,,Yaesu FTDX-10,,Icom ic-7300,,Anytone AT-D878UV PLUS",,LINCOLN II+.
Age : 150

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PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeWed Mar 22, 2023 7:15 am

8x is good enough.
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43CT016
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43CT016


Call Sign : 43-CT-016
Posts : 358
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Join date : 2019-11-17
QTH or Location : Perth
Equipment Used : iCom IC-7610/IC-9700/IC-705
Age : 55

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeWed Mar 22, 2023 7:54 am

Depending on what particular variant of RG58 you have, loss at 27MHz for an 8m run is going to be in the order of 0.6dB.  i.e. Not worth bothering about.

This assumes it is good RG58 coax, terminated correctly, etc.
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skyrider
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Call Sign : 26-CT-4654
Posts : 359
Times Thanked : 2
Join date : 2022-09-25
QTH or Location : Preston, Lancs.
Equipment Used : UNIDEN 100, midland alan 78 plus multi + mag mount , silver rod
Age : 64

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeWed Mar 22, 2023 10:54 am

thanks guys £85 is a bit much and seeing as the coax i already have is in good nick i might just struggle on with it or as Alan says 8x is ok so might try some in the future  Smile
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13oots2
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Call Sign : 26-CT-4694, M7EUS
Posts : 232
Times Thanked : 14
Join date : 2022-11-13
QTH or Location : Dorchester UK
Equipment Used : Yaesu FT950, 66FT Endfed Antenna, Various Other Bits and Pieces
Age : 57

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeThu Mar 23, 2023 2:24 am

skyrider wrote:
thanks guys £85 is a bit much and seeing as the coax i already have is in good nick i might just struggle on with it or as Alan says 8x is ok so might try some in the future  Smile

Your 8 m run would cost about £20 plus the plugs, it's £85 for 50 m.
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SangueG
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SangueG


Call Sign : 26-CT-3971 / 2E0LMI
Posts : 1183
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Join date : 2021-01-30
QTH or Location : Cirencester, Gloucestershire
Equipment Used : Little radios, home-made antennas

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeFri Mar 24, 2023 9:45 pm

My preference would be RG213, but chances are you wouldn't notice any difference between that and RG58 for what you want it for. I chose good quality* RG213, even though my cable runs are all under 10m, because they run inside the house to antennas that are also inside the house and I wanted to make sure I am picking up as little extra noise and creating as little RFI as possible when I transmit.

*Note that not all coax is made equal. I have some "RG213" of which the quality is absolutely shockingly bad. It's the right thickness, with 'military grade' writing printed on the outside.. the centre core looks good, but the shield braid is as sparse as the remaining hairs left on my head. Ok to use as short run out portable, but I won't use for my permeant setups. Make sure you buy from a reputable place if you do decide to upgrade your coax.
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https://station-master.online/2E0LMI
skyrider
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Call Sign : 26-CT-4654
Posts : 359
Times Thanked : 2
Join date : 2022-09-25
QTH or Location : Preston, Lancs.
Equipment Used : UNIDEN 100, midland alan 78 plus multi + mag mount , silver rod
Age : 64

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PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeSat Mar 25, 2023 4:44 pm

thanks for that SangueG
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babis3g
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babis3g


Call Sign : 18-CT-006
Posts : 171
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Join date : 2022-11-16
QTH or Location : Corfu Greece, jm99ug
Equipment Used : PNI 6500 & Sirio Boomerang 27A
Age : 55

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeTue Mar 28, 2023 10:17 pm

i have seen a video (not remember it now) but an Eastern block person tested 4 watts with rg58 will do about 3.2 watts & rg213 will do 3.8 watts at meter ... same length, antenna & channel just different cable

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https://www.youtube.com/channel/UCrLwycXZhdgesb28ovl5Umw
BigTone
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Call Sign : G8YMW or 26CT4498
Posts : 92
Times Thanked : 17
Join date : 2019-07-16
QTH or Location : Lincoln and Finningley
Equipment Used : CRT 9900, Icom 705, Kenwood TS570, Icom 910
Age : 69

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeThu Mar 30, 2023 11:21 pm

skyrider wrote:
Hi  1300ts2 the length of coax im running is 8 metres and im using rg 58 at the moment  coax for the antenna 1f609 and the performance is up and down thats why i was thinking of using the thicker stuff What a Face
 I would say most of that would be conditions in the wide blue yonder.
When you are on, give the cable a good wobble, if that causes changes, then that  might be cable / plugs not on right

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Ivy Mike
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Ivy Mike


Call Sign : 26CT4113/G1HWY
Posts : 467
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Join date : 2021-05-16
QTH or Location : IO90uv
Equipment Used : ICOM radios/antenna farm
Age : 69

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeFri Mar 31, 2023 9:06 pm

It's not just the cable loss/metre but the loss due to SWR must be added as well.
In a short run it most likely will be small but will add up on longer runs.

Personally I would buy the best you can afford, not cheap stuff.
As mentioned above a good quality cable will have at least 95% braid or the very best cable
will have braid and foil, helps to keep out other rfi.

I have 8metre runs on my vertical and cobwebb but have M&P Ultraflex 10 on both.
This reduces the losses to a minimum especially good for dxing. Wink

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skyrider
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Major contributor



Call Sign : 26-CT-4654
Posts : 359
Times Thanked : 2
Join date : 2022-09-25
QTH or Location : Preston, Lancs.
Equipment Used : UNIDEN 100, midland alan 78 plus multi + mag mount , silver rod
Age : 64

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeSat Apr 01, 2023 8:23 pm

thanks guys  Smile
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13oots2
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Call Sign : 26-CT-4694, M7EUS
Posts : 232
Times Thanked : 14
Join date : 2022-11-13
QTH or Location : Dorchester UK
Equipment Used : Yaesu FT950, 66FT Endfed Antenna, Various Other Bits and Pieces
Age : 57

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeSat Apr 01, 2023 9:11 pm

If you have a few accessories, SWR meter etc, you would see some benefit to reducing the number of connections.

I bought an all-in-one tuner, power meter, SWR meter that cut my interconnects down to 1.
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skyrider
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Call Sign : 26-CT-4654
Posts : 359
Times Thanked : 2
Join date : 2022-09-25
QTH or Location : Preston, Lancs.
Equipment Used : UNIDEN 100, midland alan 78 plus multi + mag mount , silver rod
Age : 64

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeSun Apr 02, 2023 11:17 am

Yes thanks 1300ts2 im using a combined swr meter and matcher which i have owned since the early eighties and it works well enough  Very Happy
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Alan Pilot
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Alan Pilot


Call Sign : 163-CT-220...MW7TTA
Posts : 2518
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Join date : 2019-11-19
QTH or Location : Anglesey North Wales
Equipment Used : Yaesu FT-991A,,Yaesu FTDX-10,,Icom ic-7300,,Anytone AT-D878UV PLUS",,LINCOLN II+.
Age : 150

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeSun Apr 02, 2023 11:26 am

Check any old swr meter by connecting it backwards and using it backwards.
Might sound daft but it works and if you get the same readings then you know it is spot on.
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skyrider
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Call Sign : 26-CT-4654
Posts : 359
Times Thanked : 2
Join date : 2022-09-25
QTH or Location : Preston, Lancs.
Equipment Used : UNIDEN 100, midland alan 78 plus multi + mag mount , silver rod
Age : 64

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeSun Apr 02, 2023 11:32 am

ok will do Alan thanks  Smile
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skyrider
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Major contributor



Call Sign : 26-CT-4654
Posts : 359
Times Thanked : 2
Join date : 2022-09-25
QTH or Location : Preston, Lancs.
Equipment Used : UNIDEN 100, midland alan 78 plus multi + mag mount , silver rod
Age : 64

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeWed Apr 05, 2023 1:22 pm

Hi Alan i tried what you said about swapping the leads over yesterday and everything ok thanks
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Alan Pilot
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Alan Pilot


Call Sign : 163-CT-220...MW7TTA
Posts : 2518
Times Thanked : 69
Join date : 2019-11-19
QTH or Location : Anglesey North Wales
Equipment Used : Yaesu FT-991A,,Yaesu FTDX-10,,Icom ic-7300,,Anytone AT-D878UV PLUS",,LINCOLN II+.
Age : 150

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeWed Apr 05, 2023 1:35 pm

skyrider wrote:
Hi Alan i tried what you said about swapping the leads over yesterday and everything ok thanks
Been on and off radio since the 70's but only found that out in the last year lol.
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skyrider
Major contributor
Major contributor



Call Sign : 26-CT-4654
Posts : 359
Times Thanked : 2
Join date : 2022-09-25
QTH or Location : Preston, Lancs.
Equipment Used : UNIDEN 100, midland alan 78 plus multi + mag mount , silver rod
Age : 64

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeWed Apr 05, 2023 1:41 pm

on my swr meter it says swr/fs what does fs mean Alan
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Alan Pilot
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Alan Pilot


Call Sign : 163-CT-220...MW7TTA
Posts : 2518
Times Thanked : 69
Join date : 2019-11-19
QTH or Location : Anglesey North Wales
Equipment Used : Yaesu FT-991A,,Yaesu FTDX-10,,Icom ic-7300,,Anytone AT-D878UV PLUS",,LINCOLN II+.
Age : 150

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeWed Apr 05, 2023 1:59 pm

fs could be field strength.
Does it have a little silver block on it with a hole in the top.
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skyrider
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Major contributor



Call Sign : 26-CT-4654
Posts : 359
Times Thanked : 2
Join date : 2022-09-25
QTH or Location : Preston, Lancs.
Equipment Used : UNIDEN 100, midland alan 78 plus multi + mag mount , silver rod
Age : 64

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeWed Apr 05, 2023 2:06 pm

no above it is the swr/fs and matcher switch, the combined swr meter and matcher is called a wipe model 175
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Alan Pilot
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Alan Pilot


Call Sign : 163-CT-220...MW7TTA
Posts : 2518
Times Thanked : 69
Join date : 2019-11-19
QTH or Location : Anglesey North Wales
Equipment Used : Yaesu FT-991A,,Yaesu FTDX-10,,Icom ic-7300,,Anytone AT-D878UV PLUS",,LINCOLN II+.
Age : 150

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeWed Apr 05, 2023 2:18 pm

On the en does it have a bit sticking out of the black case.
It would for measuring filed strength i think.
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Alan Pilot
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Alan Pilot


Call Sign : 163-CT-220...MW7TTA
Posts : 2518
Times Thanked : 69
Join date : 2019-11-19
QTH or Location : Anglesey North Wales
Equipment Used : Yaesu FT-991A,,Yaesu FTDX-10,,Icom ic-7300,,Anytone AT-D878UV PLUS",,LINCOLN II+.
Age : 150

coax for the antenna Empty
PostSubject: Re: coax for the antenna   coax for the antenna Icon_minitimeWed Apr 05, 2023 2:20 pm

Could be on the back as in this short video.
You got a tiny little aerial with a loop top to screw into it.
https://www.google.com/search?q=wipe+model+175&sourceid=chrome&ie=UTF-8#fpstate=ive&vld=cid:b3e1387a,vid:mBPQXMmHBQM
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