Hi Brian: Well, as you say, the switchers should be much better regulated. Beware the RF switching noise/harmonics. I have had to replace several switcher wall warts in my shack with linear regulated warts to quiet down the RF environment. I got tired of the "noise humps" chasing me across 30 and 40 Meters.
The LiFePO4 batteries have low source impedance and should work fine. --- Graham == On Mon, May 16, 2011 at 10:57 PM, Brian Lloyd <[email protected]>wrote: > > > On Mon, May 16, 2011 at 4:14 PM, Graham Haddock <[email protected]>wrote: > >> Just one additional comment... >> >> I cringe when I hear talk about using wallwarts to power the FLEX-1500. >> >> They will work great in receive. >> >> BUT the transmitter will work better (stay more linear) with a power >> supply that >> does not move up and down in voltage as the load goes up and down. Most >> wallwarts have high internal resistance as part of their consumer >> protection. >> > > Even the little switchers? The old transformer types were awful. I haven't > tried to measure one of the switchers under load. I thought that they would > just drop out under overload rather than sag. > > >> The FLEX-1500, or any transmitter, for that matter, will be much happier >> in transmit >> with a regulated power supply. At least with more regulation than most >> wallwarts provide. >> > > I am probably going to end up going with a LiFePO4 pack 'cause then I can > operate where there is or is not power. > > -- > Brian Lloyd, WB6RQN/J79BPL > 3191 Western Dr. > Cameron Park, CA 95682 > [email protected] > +1.767.617.1365 (Dominica) > +1.931.492.6776 (USA) > (+1.931.4.WB6RQN) > > _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using beta versions of the software.
