[Amps] YAESU QUADRA Line Voltage Question

[Leigh Turner]

Yes considering the risk of dire consequences for expensive failure and
repairs it would be wise to take precautions and guard against exceeding the
Quadra's narrow rated spec for AC mains input voltage.

It is actually quite ridiculous that Yaesu would design a product ostensibly
for a global market that did not cater for safely handling up to 264 VAC
mains input....as mandated for most modern switch-mode power supplies.

Leigh
VK5KLT

-----Original Message-----
From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of peter chadwick
Sent: Sunday, 15 June 2014 6:49 AM
To: Richard Solomon; amps at contesting.com
Subject: Re: [Amps] YAESU QUADRA Line Voltage Question

Interesting question. Most ETSI Standards (applicable in Europe and a fair
bit of the Far East) require operation meetings spec for mains voltage +/-
10%. BUT the standard for commercially available amateur radio equipment has
no requirement.......How that got through, I don't know. Maybe I should ask
the Chairman of ETSI ERM TG26, who works for Icom.....

I'd suggest a bucking transformer.

73

Peter G3RZP


========================================
 Message Received: Jun 14 2014, 07:37 PM
 From: "Richard Solomon" <dickw1ksz at gmail.com>
 To: "amps at contesting.com" <amps at contesting.com>
 Cc: 
 Subject: [Amps] YAESU QUADRA Line Voltage Question
 
 Back to thinking about getting a YAESU QUADRA, but the
 Line Voltage problem is bugging me again.
 
 YAESU puts an Abs Max spec on the Line Voltage at 240 VAC,
 anything over that and nasty things can happen.
 
 But, our line voltage spec here is 240 VAC +/- 5% and my line
 typically runs over 240 VAC.
 
 So, the answer seems to be some kind of Buck/Boost Xfmr or
 Line regulator.
 
 What do folks that own a Quadra do ??
 
 73, Dick, W1KSZ