[ARC5] 28 volt high-current supplies?

[Meir Ben-Dror WF2U]

I have 2 PP-8474G's. One is running my GRC-19 and the other replaced the original power supply (which has a problem I haven't addressed yet) in the GRC-142 shelter, for the GRC-106.
I bought 2 24-28 VDC at 130 amps switching supplies - 240 vac input - on eBay some time ago ($60 each), that came out of a data center (probably for battery charging), which produce no RFI, so I use one for running the DY-17A for the ART-13, the other is a spare for now.
I didn't notice that the 100 amp switcher on eBay I gave the link for, is cobbled up from 2 supplies... 

73, Meir WF2U
Landrum, SC

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On Feb 17, 2022, 8:47 PM, at 8:47 PM, J Mcvey <ac2eu at yahoo.com> wrote:
>Raw SMPS are usually not suitable for radio power supplies. Espaecailly
>those cheap ones, which probably don't have any FCC compliance at all.
>There are some decent military SMPS radio supplies out there like
>PP-8474G or the GEI24-RPA-T.I have both . The latter is more modern and
>has better regulation . I had pigtail onnectors that are supposed to
>power radios in a rack, but I just use the charger output. 
>
>On Thursday, February 17, 2022, 07:58:47 PM EST, Charles via ARC5
><arc5 at mailman.qth.net> wrote:  
> 
>  
>Thanks Meir, I saw that while searching... it's very obviously two 12
>volt supplies wired in series without any diodes to avoid potential
>back-biasing during startup. Really professional job on the "24"
>sticker too (sarcasm).
> 
>There's a perfect transformer if I decide to go linear, and the weight
>doesn't matter... but they just want too much!
> 
>https://www.ebay.com/itm/165244216125
> 
>-Charles
> 
>
> 
> On 2/17/22 18:54, Meir Ben-Dror WF2U wrote:
>  
> 
>This one should do it...
> 
>https://www.ebay.com/itm/24-Volt-100-Amp-DC-Power-Supply-2400-watts-/164935380985?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l6249&mkrid=711-127632-2357-0
> 
>  73, Meir WF2U
>  Landrum, SC
> 
>Get BlueMail for Android  On Feb 17, 2022, at 6:54 PM, Charles via ARC5
><arc5 at mailman.qth.net> wrote: 
> Looking for ideas on 24-28 volt supplies that won't break the bank. 
>Shipping on big iron is REALLY expensive these days even if a suitably 
>sized transformer can be found... Switching supplies from China aren't 
>too bad. Two big batteries and a smaller charger to keep them up when 
>not operating seems to be about the best compromise.
>
>I'd like to be able to make 100 amps DC (which needs a 240 volt outlet,
>
>of course).
>
>Any thoughts? thanks
>
>-Charles
>
>WB3JOK/0 since 1976
>
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