Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: Prev 1 [2]   Go Down
  Print  
Author Topic: Preamp Advise 6M  (Read 4437 times)
K1DA
Member

Posts: 513




Ignore
« Reply #15 on: May 02, 2012, 12:08:44 PM »

A killerwatt on 6 helps with extended groundwave  which  may mean the difference in a 6 meter contest when the band is otherwise closed, but when the band is wide open?Huh just  a bad neighbor, especially some of  the halfbleep low band amp conversions I have heard (everywhere). 
Logged
K6AER
Member

Posts: 3524




Ignore
« Reply #16 on: May 02, 2012, 02:51:42 PM »

Most hams have poor antennas, lossey feed lines and live in high noise environments. Your noise level is set by the antenna and the feed line loss. Even running a preamp at the antenna will not make up for the transmitter loss going out to the antenna. Always run the best coax you can afford.

If I call CQ on six with a 100 watts I will almost always get a return call. I run a 7 element SteppIR at 105 feet in Colorado and feed the antenna with 200 feet of 7/8 Andrews LDF5-50A. My noise level with both preamps on is about zero on the IC-7600.

If I call with 1500 watts I will get ten calls. Every time I ask if the heard the previously CQ they say no. Turn off the amplifier and I disappear into their noise level.

I know the typical narrative is six is a band where you don’t need power. But most hams don’t have beams, towers to get the antenna out of the noise and run lossey coax. Many of time I have called CQ on a dead band with power and get the reply, “I did not know the band was open”.
« Last Edit: May 02, 2012, 02:53:32 PM by K6AER » Logged
Pages: Prev 1 [2]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!