[Milsurplus] Re: [ARC5] SCR-274-N Transmitter Dial Accuracy

[jcoward5452 at aol.com]

In the TV show 12 O'clock High,General Savage was always reaching up to 
crank the command set.Those Holywood SCR-274N's had a really bad habit 
of driffting off frequency.
  On the other hand,SBD Dauntless dive bombers and other non fighter 
aircraft
   had a LM,GF,RU or ARB.I doubt the radio operator did any tuning in 
flight,the carrier techies probably had an easier time of it by having 
the LM built in.
 JC KE6PPF


-----Original Message-----
From: Mike Morrow <kk5f at earthlink.net>
To: Neil <neilb at ihug.co.nz>; ARC-5 <ARC5 at mailman.qth.net>
Sent: Sun, 6 Jul 2008 7:03 am
Subject: Re: [Milsurplus] Re: [ARC5] SCR-274-N Transmitter Dial Accuracy



I wrote:

> I have often wondered how the users of the MF/HF commands sets
> netted the receiver to the associated transmitter...

I should have clarified that this referred to in-flight operation.

Neil wrote:

>Why would a pilot want to net his receiver to his own transmitter?

Er...maybe because the "coffee grinder" controls hanging out in the open
got tweaked intentionally or inadvertently while in flight.  This was
a very common complaint, and once it occurred there was no easy way to
get the receiver back.  The pushbutton selectors with no tuning controls
on the early VHF command sets were praised by pilots in comparision.
The problem was enough to lead to the stabilized preset lock-tuned
command set communication receivers (R-25, 26, 27/ARC-5) in many USN
aircraft.

A fighter pilot isn't going to pull out a LM or BC-221 and adjust his
receivers with it in flight. :-)  This isn't easily done even on large
aircraft with a radio operator, since the receiver controls aren't at
the radio operator position.

Mike / KK5F
_______________________________________________
ARC5 mailing list
ARC5 at mailman.qth.net
http://mailman.qth.net/mailman/listinfo/arc5