Bad or Good Idea; 13.8V Linear DC PS for HAM Radios using 1 of these regulators?

[Nipkinz]

Hi gang,

I'm considering putting together a design schematic for a linear DC 13.8V power supply used for Ham Radios. Many linear DC supplies for Ham Radios make use of the famous LM/uA-723 voltage regulator chip. After reading through a few posts here related to the 723, I'm considering using a different regulator. For my Ham Radio requirements, typical load current will range between various radios between 9A-23A, therefore I'm planning for a PS capable of providing up to 40A 100% duty-cycle max. However, typical max current load will likely never exceed 25A at 100% duty cycle.

Strongly desired regulator specs would include:
- Adjustable output voltage (either via built-in pin(s) or external resistors)
- LDO
- Low output voltage noise (perhaps <80µVrms)
- High ripple rejection (perhaps >50dB (100 Hz)
- Input voltage range of 18v-35v (wide range because I've never worked with a LDO regulator and not certain how much drop is associated and/or specified for stable and safe operation)
- Current limit protection (short and reverse protection)
- Over-voltage protection adjustment to protect the radio(s).

This is a big ask, and is my first forum post, so I'll apologize now for saying or asking stupid things, *grin*.

So far, in my search, I've come across two possible regulator candidates. What are your thoughts and recommendations?

1. TPS7A4701-EP:  https://www.ti.com/lit/ds/symlink/tps7a4701-ep.pdf?ts=1724489932033
2. UC2834M:  https://www.ti.com/lit/ds/symlink/uc2834m.pdf?ts=1724513506097&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FUC2834M

I appreciate any input you provide, have a great day!

[Wallace Gasiewicz]

Building a 30 amp Linear PS is not hard but probably quite expensive. I would look at the Astron or Pyramid PS and find a schematic.   
But the most expensive part will be your Transformer.     
If you just need a PS for regular use I would look at Hamfests. Even a broken one would be probably easily fixed, as long as the transformer is OK.     You will probably find that an entire used PS will be cheaper than buying the transformer alone.
I use a Yaesu FP 1030A PS for testing radios. Since I test broken radios I need something with good safety features and an ammeter. I bought it broken at a Hamfest for $20 and fixed it in about an hour.     

https://www.arrl.org/hamfests-and-conventions-calendar

[Nipkinz]

Building a 30 amp Linear PS is not hard but probably quite expensive. I would look at the Astron or Pyramid PS and find a schematic.   
But the most expensive part will be your Transformer.     
If you just need a PS for regular use I would look at Hamfests. Even a broken one would be probably easily fixed, as long as the transformer is OK.     You will probably find that an entire used PS will be cheaper than buying the transformer alone.
I use a Yaesu FP 1030A PS for testing radios. Since I test broken radios I need something with good safety features and an ammeter. I bought it broken at a Hamfest for $20 and fixed it in about an hour.     

Hi Wallace, thanks for responding, I really appreciate that. To clarify, I'm not seeking advice on buying a power supply, I asked which regulator would be well-suited for building my own power supply and included two potential candidates for consideration. Thanks again for responding.

Cheers