BLIND-HAMS Archives

For blind ham radio operators

BLIND-HAMS@LISTSERV.ICORS.ORG
Options: Use Forum View

Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
10 Pol Colins Mechanical Filter
From:
Michael Ryan <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Mon, 18 Jul 2011 09:39:29 -0230
Content-Type:
text/plain
Parts/Attachments:
text/plain (11 lines) 
Hi All: 

Just reading up on the Yaesu FT-1000 Mark V and it mentioned that this transceiver came standard with a 10 Pol Colins Mechanical filter. 
Was this the prede sesser to todays modern roofing filter? What was the narrowing capability of this filter? 
I also see that this rig had the ability to plug in 2 2KHZ SSB filters, 1 in the 455KHZ IF and 8.2KHZ IF 2 250CWs 1 for the 455KHZ and 8.2 IFs. 
What is the difference between these with regards to actual hearing and filtering characteristics? ? When I activate the narrow filter setting on my FT-450, do I hear the 8.2 IF at 1.8KHZ and 500 or is this the 455KHZ IF? 

TNX & 73: 

Michael De VO1RYN

ATOM RSS1 RSS2