VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #31  
Old 02-12-2019, 07:34 AM
keitht keitht is offline
 
Join Date: Jun 2016
Location: coupeville wa
Posts: 36
Default

Carl,
I agree that performance is a mission driven objective. If the mission is ham radio communicating with someone through a repeater from the comfort of your shack that is a far different situation than the airborne navigation mission. Link margins and isolation from noise and interference take on a whole different meaning. If my life is on the line and dependant on objective expectations that I can tune in an ILS and fly the approach without loss of signal at the critical moment the only way I know how to do that is to know the theoretical link margins based on the specified performance compared with actual measurement of the ground based and aircraft based system components. The subjective “lick it and taste” approach is perfectly good enough for the ham radio environment but shouldnt become standard operating procedure for VOR and ILS in the airborne environment. I have always considered the gamma match approach to impedence matching to be a brute force approach due to the impact on the beam pattern and yes I do know how to tune and match an antenna even though I only have my trusty MFJ 259 that I mostly use to tune my ham radio equipment.
KT AF7GP
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 04:50 PM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.