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 $2500-$7500 piece of
equipment from a supply with a less-than-stellar history, when lab
equipment is available at hobbyist prices:
>>
>> B&K Precision 3-15VDC 40A switching supply for about $300:
>>
http://www.amazon.com/Precision-1692-Switching-Digital-3-15VDC/dp/B00068OUNY/ref=sr_1_38?s=industrial&ie=UTF8&qid=1402583789&sr=1-38
>>
>> B&K Precision 1-16VDC 60A switching supply for about $570:
>> http://www.amazon.com/dp/B005G5MALQ/ref=biss_dp_t_asn
>>
>> Thousands of these are in use in test labs throughout the US, including
automotive EMC and radio test chambers. They emit minimal RFI, a very
quiet, run cool and are very reliable. They also offer a useful amount of
load protection, something lacking in most hobbyist supplies.
>>
>> Mike - N8MSA
>>
>>
>> ----- Original Message -----
>>
>> From: "Bret Mills" <bret.w...@gmail.com>
>> To: "K9DUR' 'Ray" <k9...@rnacs.com>, "Dudley Hurry" <jhu...@austin.rr.com>,
"Dave Movius" <dave.mov...@gmail.com>
>> Cc: flexradio@flex-radio.biz
>> Sent: Thursday, June 12, 2014 10:06:45 AM
>> Subject: Re: [Flexradio] Power Supply Advice
>>
>> 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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