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:
Re: 704 box
From:
"Alan R. Downing" <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Mon, 1 Dec 2014 11:47:20 -0700
Content-Type:
text/plain
Parts/Attachments:
text/plain (32 lines) 
Most of the amps that require the use of devices such as the Ameritron
ARB-704 are old ones.  Most modern-day amps can be keyed without problems by
today's transceivers, but the older amps often required voltages and
currents beyond the limited capabilities of modern-day transceivers.

Best 73
Alan



Alan R. Downing
Phoenix, AZ

-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Butch Bussen
Sent: Monday, December 01, 2014 11:00 AM
To: [log in to unmask]
Subject: 704 box

It is a buffer or isolator between radio and linear amplifier.  Basicly, 
this box as well as the one I sent a link to yesterday is keyed by the 
small relay in the radio and the box then keys the amp.  Most radios have 
a very small voltage and current rating which isn't enough for some 
amplifiers.
HTH.
73
Butch
WA0VJR
Node 3148
Wallace, ks.

ATOM RSS1 RSS2