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

donate to eham
   Home   Help Search  
Pages: Prev 1 [2]   Go Down
  Print  
Author Topic: 811 Tuned Input for 20/30 M  (Read 3610 times)
W8JX
Member

Posts: 13268




Ignore
« Reply #15 on: July 02, 2018, 12:02:58 PM »

He'd gain 3dB. 

A barely discernible difference
Logged

--------------------------------------
Ham since 1969....  Old School 20wpm REAL Extra Class..
W1BR
Member

Posts: 4196




Ignore
« Reply #16 on: July 02, 2018, 12:16:47 PM »

He'd gain 3dB. 

A barely discernible difference

Your opinion.
Logged
W8JX
Member

Posts: 13268




Ignore
« Reply #17 on: July 02, 2018, 12:53:26 PM »


Not a opinion, physics and math. Higher noise levels on HF bands it takes more than 3 db to make a real difference.  On VHF/UHF where noise floor of radio being used is more of a limiting factor 3 db can help more.
Logged

--------------------------------------
Ham since 1969....  Old School 20wpm REAL Extra Class..
W1BR
Member

Posts: 4196




Ignore
« Reply #18 on: July 02, 2018, 12:55:49 PM »

Nonsense.  3 dB is still 3 dB.  Noise is relative, dB is relative. 
Logged
K4RVN
Member

Posts: 261




Ignore
« Reply #19 on: July 02, 2018, 02:41:53 PM »

Barry please post how you attempted to adjust the tuned input on the AL 811.
If you by pass the amp and use the transceiver's meter for 20 meters what does the SWR read. Are you using a dummy load?
I can find nothing to explain how to properly adjust an amps tuned input so if you found something, please share it and I would appreciate it. I have done both the AL811, AL 80A, and B models just by common sense which may be wrong but both worked fine I think.

Frank
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!