[SCCC] 70 cm/23 cm Antenna Recommendations?

[Steve Harrison]

Well, if you really wanted to work SSB/CW on 432 or especially 1296, you 
would be at a large disadvantage, to begin with, using any 
vertically-polarized antler, since those modes are horizontal. And 
having 150 feet of feedline will exacerbate that problem considerably, 
and even more-so if you wanted to also try 1296. I don't know what 
polarization folks are using on the digital modes since I have no 
interest in those, so can't help with that.

Most important thing, whichever mode or band you try, would be to keep 
the feedline losses at a minimum; every little bit helps. At 1296 and 
150 feet, even 1-5/8" heliax wouldn't  be "going too far". There are 
coax loss calculators on the web to help estimate what you might expect. 
You might even wind up wanting to install a mast-mounted preamp just so 
you can hear folks.

SteveH K0XP

On 8/9/2022 9:52 AM, Bruce Horn wrote:
> Hi,
>
> I've never operated on a band higher in frequency than 2m, but recently purchased a Icom IC-9700, so I'm looking at antennas for the 70 cm and 23 cm bands. It would require a coax run of 150 ft to connect rotatable antennas, so I'm looking at vertical antennas that can be placed on the roof. However, almost everything that covers 70 cm specifies a 440-450 MHz and doesn't seem to cover 432. The Diamond X510NJ covers 428-442 MHz, but requires a special order.
>
> Any antenna recommendations would be appreciated. Thanks.
>
> 73 de Bruce, WA7BNM   (bhorn at hornucopia.com)
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