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
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.
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.
I don't understand the rationale for feeding a $2500-$7500 piece of equipment
from a supply with a less-than-stellar history, when lab equipment is available
at hobbyist prices:
BK Precision 3-15VDC 40A switching supply for about $300:
These are nice supplies.
Tim Ellison, W4TME
On 6/12/2014 10:48 AM, amsct...@comcast.net wrote:
I don't understand the rationale for feeding a $2500-$7500 piece of equipment
from a supply with a less-than-stellar history, when lab equipment is available
at hobbyist prices:
BK Precision
I hope so (as I have one on order; should arrive in a week or so). :)
On Jun 12, 2014 11:19 AM, Tim Ellison, W4TME t...@flex-radio.com wrote:
These are nice supplies.
Tim Ellison, W4TME
On 6/12/2014 10:48 AM, amsct...@comcast.net wrote:
I don't understand the rationale for feeding a
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
That's why you should add an Over-Voltage protection module to the power
supply.
73, Dick, W1KSZ
On 6/12/2014 4:25 AM, Ray, K9DUR wrote:
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
There is an over voltage protection circuit on the output circuit in the
RM-35 but it usually blows out, protecting the fuse on the input to the
supply and destroying the attached radio.
I cannot understand why Astron has such a good reputation with such a poor
design.
Paul, W8AEF
Hi Paul!
What do you use?
73
Neal Campbell
Abroham Neal LLC
On Thu, Jun 12, 2014 at 9:37 AM, Paul w8...@q.com wrote:
There is an over voltage protection circuit on the output circuit in the
RM-35 but it usually blows out, protecting the fuse on the input to the
supply and destroying the
I use an Astron SS-25. I think it is a 25 anyway. I am not home at the moment
so cannot check for sure.
Ask me how I know about the crow-bar circuit in the 35 grin.
Paul, W8AEF
From: Neal Campbell
Sent: Thursday, June 12, 2014 11:02 AM
To: Paul
Cc: Ray, K9DUR ; Dudley Hurry ; Dave Movius ;
The moral of the story is that every time you chop some something (like a
switching supply), you create noise. It is in the math. This is why the
Alinco has a adjustable frequency option to move the birdies.
The old IRON Astrons are much quieter by design. You aren't chopping
anything. :)
Hi All!
This over protection module is something that you can buy in stores or must be
built ?
I am using with my 6700 a Astron RS 70 - M ( 70 amper). I have it since many
years. Reading all this
emails I must take a look of its output!!
How can i do it? it is so simple like conecting the
There is (or was) an over-voltage protection circuit in the RM-35 - it just
doesn't work.
Paul, W8AEF
-Original Message-
From: Richard Solomon
Sent: Thursday, June 12, 2014 8:38 AM
To: flexradio@flex-radio.biz
Subject: Re: [Flexradio] Power Supply Advice
That's why you should add an
Tim,
Does the Flex 6000 series have any built-in over-voltage protection? How about
the 5000 and 3000?
Ed, K0KC
From: Tim Ellison, W4TME t...@flex-radio.com
To: flexradio@flex-radio.biz
Sent: Thursday, June 12, 2014 11:19 AM
Subject: Re: [Flexradio] Fwd:
Mike,
Yes, you create noise. But the Alinco seems to do a very good job of
suppressing the switching products. Of the 6 DM-330MV's that I am around on
a regular basis, none have ever generated any detectable RF hash. I even
forgot they have the adjustment to move the birdies.
73, Ray, K9DUR
Just to be a devil's advocate, if you take the time to read most of the 236
reviews ( I got bored at about 50) for the RS-35A M there are many
testimoials of has been used for 10, 15,18 or 20+ years without fail. Some have
never been turned off. Sure there are some failures but it does not
I have three of these, bought at separate times. The oldest is 20+ years to
the most recent one at 10 years. Had one failure where the PC board that
bolts to the terminals of the filter cap came loose, heated up and let out
the smoke. Fixed that, checked the others, found one loose, fixed it
And if you chase down schematics for these:
http://www.repeater-builder.com/astron/pdf/astron-rs35m-annotated.pdf
...you see a very rudimentary, SCR-crowbar, non-temperature compensated hobby
supply. Why not pay an another $100 to better protect a $7K radio?
Mike - N8MSA
- Forwarded
my waterfall display has gone blank (black)
PowerSDR v2.6.4 -- setup has worked in the past
but not run for ~ 1 month
adjusting the settings has no effect.
reset to defaults didn't help
nothing in the Flex Knowledge base
I'm sure others have seen this - anyone
remember the magic fix?
73
paul
Yep, you could do that. But, I had a $1000 12v 50 amp commercial supply
fail at my repeater site (not lightning related) and it took out 5
repeaters. The name of the PS fails me at the moment. So, it can happen
at any level.
The point is all hardware fails and there are no guarantees.
Like
Have you tried rebooting the PC? Several of us including myself see that
once in a while, and rebooting the PC fixes it.
Steve
KC0FU
On Thu, Jun 12, 2014 at 5:19 PM, Paul Wade w1ghz...@gmail.com wrote:
my waterfall display has gone blank (black)
PowerSDR v2.6.4 -- setup has worked in the
Have you tried turning it off and then on again?
https://www.youtube.com/watch?v=nn2FB1P_Mn8feature=kp
On Thu, Jun 12, 2014 at 6:19 PM, Paul Wade w1ghz...@gmail.com wrote:
my waterfall display has gone blank (black)
PowerSDR v2.6.4 -- setup has worked in the past
but not run for ~ 1 month
Hobbyking would not process my order, said the zip code must be numerical,
which it was.
On the $300 power supply Amazon said, Usually ships within 1 to 2 months,
really 1-2 months?
On Thursday, June 12, 2014 7:07 PM, Michael Walker va...@portcredit.net wrote:
Yep, you could do that.
hi Steve,
thanks, that did the trick.
must be some Windows glitch, so cross your fingers, stand on one foot, and
reboot...
73
paul
On Thu, Jun 12, 2014 at 6:53 PM, Steve Fowler killmo...@gmail.com wrote:
Have you tried rebooting the PC? Several of us including myself see that
once in a
The one I ordered through Amazon is showing a delivery time of
approximately one week from tomorrow. Other distributors have them at a
similar price and each lists several of the 40A (#1692) in stock.
Maybe, with all this discussion, there will be a run on them. :)
Hobbyking would not process my
Good old Windows. I'm always curious why Flex painted themselves into the
corner of that environment - twice, it appears. The only PC I own is the PC
to use my FlexRadio.
73,
Mickey N4MB
On Thu, Jun 12, 2014 at 8:07 PM, Paul Wade w1ghz...@gmail.com wrote:
hi Steve,
thanks, that did the
Because it makes perfect sense, that's why. Over 90% of the market share uses
some flavor of Windows.
I would prefer Linux but one has to be realistic.
Eddie from the BronxAB2VW
Date: Thu, 12 Jun 2014 20:48:30 -0400
From: fishflor...@gmail.com
To: w1ghz...@gmail.com
CC:
I'll bet that if you looked at a more specific demographic - hams likely to
spend $3k on a radio controlled by a computer, for example, the balance is
much different.
I believe that the choice was made as a development platform decision
first.
73,
Mickey
On Thursday, June 12, 2014, Edwin
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