I'm not a big fan of switchers although my 990 does have one in it.  I 
run astron 35 and 75 standard analog supplies with very heavy 
transformers.  No extra noise and  it takes a lot to turn on the fan on 
the 75.  I have an mfj 20 amp switcher, and my main complaint is the fan 
runs continiously no matter the load.  It should have some kind of 
temperature control.  I'm running a 20 amp switcher that came with one 
of my kenwood repeaters, I forget the brand, and it has lots of noise on 
160.  Again, I'm not a fan of switchers.  I understand their advantage, 
but not for me.
73
Butch
WA0VJR
Node 3148
Wallace, ks.


On Tue, 13 Aug 2013, Dr. Ronald E. Milliman wrote:

> Re: MFJ-4245MV Product Reviews
>
> Mike,
>
> I appreciate your recommendation very much. However, I checked out the
> product reviews for the MFJ-4245, and while some were good, several were
> extremely negative. The reviews were either 0 out of 5 or 5 out of 5,
> nothing inbetween. The frightening part is that the llack of adequate
> voltage spike protection caused some rigs to fry. If your experience is
> positive, you appear to be one of the lucky ones! I don't know if I would be
> that lucky or not, but I hesitate to take the risk! <lol> FYI, check out:
>
>  MFJ-4245MV Product Reviews at
>
> http://www.eham.net/reviews/detail/256
>
> Ron, K8HSY
>
>
> -----Original Message-----
> From: For blind ham radio operators [mailto:[log in to unmask]]
> On Behalf Of Mike Duke, K5XU
> Sent: Monday, August 12, 2013 5:16 PM
> To: [log in to unmask]
> Subject: How Much Power Supply Do I Need?
>
> Ron,
>
> Buy yourself an MFJ model 4245 power supply.
>
> It is a 45 amp switcher that will give you all the head room you need.
> Besides, how likely is it that you will ever transmit on both rigs at the
> same time anyway.
>
> I have been running both my TMV71 and TS570 on one of them for 2 years with
> no problems.
>
> This thing is about half the size of the old Astron 20 amp traditional
> model, and only weighs about 5 pounds.
>
>
>
>
> Mike Duke, K5XU
> American Council of Blind Radio Amateurs
>
>