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Call Sign : 26-CT-231 Posts : 34 Times Thanked : 0 Join date : 2019-08-11 QTH or Location : Cambridge Equipment Used : Linoln 2
Subject: RF Choke coax Sat Feb 24, 2024 3:27 pm
Hi All
Looking to make an REF Choke to hope in reducing some of the noise on my radio, which is the best coax to use..
Thank you...
SangueG Major contributor
Call Sign : 26-CT-3971 / 2E0LMI Posts : 1164 Times Thanked : 68 Join date : 2021-01-30 QTH or Location : Cirencester, Gloucestershire Equipment Used : Little radios, home-made antennas
Subject: Re: RF Choke coax Sat Feb 24, 2024 4:08 pm
Is it for 11m? I have one I made for 11m and the close by bands. I used RG58 as it was easy to coil up. I only have RG58 and RG213 here to use, and the RG213 I have was not pliable enough to get into a coil.
TamGlasgow likes this post
peewee norfolk Senior contributor
Call Sign : 26-CT-4879 / M7PCA Posts : 185 Times Thanked : 8 Join date : 2023-07-16 QTH or Location : North Walsham, JO02QU Equipment Used : FT1000MP !!!!!!binatone 5*,alinco dx10 135,sirio4000,silver rod,G5RV,beofeng 17 pro max, X30 duel 2m/70cm,full size G5RV, TS120v,soon new toy Age : 56
Subject: Re: RF Choke coax Sat Feb 24, 2024 9:40 pm
hi Andy im the same above i used rg58 as had that to hand and like allready said rg213 would be better but dam hard to bend, i used a bit of soil-pipe off cut to make it then cable ties, works great !!
26CT231ANDY likes this post
Ivy Mike Major contributor
Call Sign : 26CT4113/G1HWY Posts : 464 Times Thanked : 12 Join date : 2021-05-16 QTH or Location : IO90uv Equipment Used : ICOM radios/antenna farm Age : 69
Subject: Re: RF Choke coax Sun Feb 25, 2024 8:34 am
If the 'ugly balun' does not do it.
9 turns of RG142 on an FT240-31 toroid, will give good choking, >2k ohms at 3.5-30MHz
All the bits needed to make one are available from Hamgoodies.co.uk.
Yesterday at 9:33 pm by Vasilis
Subject: RF Choke coax 
