Topband: 400 Ft. RG6

Jeff Maass jmaass at
Fri Dec 14 19:47:29 EST 2007

> -----Original Message-----
> From: topband-bounces at 
> [mailto:topband-bounces at] On Behalf Of Jim Brown
> Sent: Friday, December 14, 2007 6:03 PM
> To: Ed Stallman; topband at
> Subject: Re: Topband: 400 Ft. RG6
> On Fri, 14 Dec 2007 10:38:21 -0600, Ed Stallman wrote:
> >will I need a preamp?
> Not to make up loss in the coax, but maybe to match levels 
> with your transmit antenna to make switching between them 
> easier to adjust to mentally. I have a preamp, and am glad I 
> do, but many folks use Beverages without them.
> 73,
> Jim K9YC

I've always found that inserting a 20 dB (or so) attenuator in the TX antenna when
receiving to be a better way to match signal levels to the RX antennas. I've never found a
preamp necessary (although I have a few).

With the FT-1000MP family, this is very easy (using the "RX In" and "RX Out" jacks). How
we switch our RX antennas to our four stations at PJ2T, including the 20 dB attenuators,
is shown at 

73,  Jeff  K8ND

More information about the Topband mailing list