This simple device looks interesting . The proper way for me to refer
to how it works would be ... it shows how much my equipment is drawing
from the power supply or ..... it shows how hard your power supply is
working by listing the voltage and amperage use ? or both ? thanks
John kb2huk
On 6/12/2014 9:21 AM, Michael Walker wrote:
I wish I could say the same. I have many Astrons and many have been in
operation for decades, all fine. I have been adding The HobbyKing Voltage
readout 'fob' to them since they are about $3 each just to keep an eye on
things.
http://www.hobbyking.com/hobbyking/store/__18825__on_board_led_rx_voltage_display.html
Mike va3mw
On Thu, Jun 12, 2014 at 10:06 AM, Bret Mills <bret.w...@gmail.com> wrote:
Same here, I have lost a BUNCH of 2N3055 pass transistors over the last 30
years and equipment that was attached to the Power supply, Also the big
Electrolytic goes bad and you have a lot of AC ripple after about 5 years
of
operation.
If your equipment is important to you rebuild the Astron P.S. every 5 years
or so of continuous operation, you may be lucky enough to get 10 years out
of it but your asking for trouble, this is why around here you never see
Astron Power supplies at a commercial Mountain top site on commercial radio
equipment.
Most Commercial installation these days use there own design, I do know
Kenwood systems use Duracom switcher Pwr. Supplies but these are a bit
noisy
on HF so don't play well in Amateur use.
73's
Bret
WX7Y
-----Original Message-----
From: FlexRadio [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of
Ray,
K9DUR
Sent: Thursday, June 12, 2014 5:26 AM
To: 'Dudley Hurry'; 'Dave Movius'
Cc: flexradio@flex-radio.biz
Subject: Re: [Flexradio] Power Supply Advice
Dudley,
I agree. Our club had an Astron RM-35 that had the series pass transistor
fail (short). The output voltage went to the maximum provided by the
transformer & the 2 rigs connected to it were damaged. The Yaesu FT-950
was
repairable, but a Yaesu FM rig was not economical to repair.
A problem with linear supplies is that if the series transistor fails, the
result is a serious over-voltage situation.
73, Ray, K9DUR
http://k9dur.info
-----Original Message-----
From: FlexRadio [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of
Dudley Hurry
Sent: Wednesday, June 11, 2014 9:48 PM
To: Dave Movius
Cc: <flexradio@flex-radio.biz>
Subject: Re: [Flexradio] Power Supply Advice
Keep am eye on the analog power supplies , over time they will begin to
lose voltage regulation and will need to be repaired or replaced.
73,
Dudley
WA5QPZ
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