[RFI] Please comment this picture

[Martin Kratoska]

My feedline actually consists of more parts:

1) from radio to wall mounted switch - 8 mtrs of RG400
2) from the switch to 80m sloped dipole - 10 mtrs of RG400, a W2DU style 
choke balun is an integral part
3) from the switch to HF multiband vertical (roof mounted, the metal 
roof is misused as a grounding system) - 15 mtrs H500 + 1 m RG400 as 
another W2DU style choke balun.

The beads used for the W2DU style balun are Laird LFB095051-000. This 
stuff has a crossover frequency R=X slightly above 1 MHz.

73,
Martin, OK1RR



Dne 04. 01. 23 v 6:19 Jim Brown napsal(a):
> On 1/3/2023 8:29 PM, Martin Kratoska wrote:
>> the feedline is RG400.
>
> That's very good coax for very special purposes like common mode 
> chokes and patch cables in the shack. But it's but also very lossy -- 
> equivalent of RG58 -- so I using much larger stuffto the antenna. My 
> wire antennas are fed with RG8 or RG11 size coax, and 7/8-in hard line 
> for the 350 ft run to the top of my tower.
>
> 73, Jim K9YC
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