¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
Date
Re: hi power mobile
<TollFree1800@...> wrote: and ##### I have zero experience with it. I was just waiting for you to come out of the wood work.... since I knew you guys had this down pat... and was all old news.
By pentalab <jim.thomson@...> · #1971 ·
Re: The real benefits of running mobile qro.
Phil, On next occasion I will open the SS750 amp and take some pictures. What I did to reduce the voltage drop is the following: 1. replaced the feedthru with a larger one, and use a M8 brass bolt
By PA3DUV <pa3duv@...> · #1969 ·
Re: hi power mobile
Will, How does a series regulator for 300 amps look like? The efficiency from such a regulator seems to questionable, the voltage difference x current is obviously dissipated and turned into heat.
By PA3DUV <pa3duv@...> · #1970 ·
Re: hi power mobile
I hadn't seen Will's post yet when I made my reply. But, yeah, what he said. --Toll_Free
By 1800 Toll Free · #1968 ·
Re: hi power mobile
It's kind of funny watching the thread about the mobile amplifiers and voltage requirements. Here, we learned long ago (on 11 meters) how to fix this problem. The 11 meter crowd calls it a "dead
By 1800 Toll Free · #1967 ·
Re: hi power mobile
wrote: system.. a We made some tube mobiles this way back in the late 70's to early 80's. You took the 14V 3 phase AC and powered a HV transformer with it. The large tube amps they use on those 11
By craxd <craxd@...> · #1966 ·
Re: hi power mobile
I do the latter with my IC-2KL, 4 batteries are switched in series on transmit and parallel on receive 73 Peter ________________________________ From: ham_amplifiers@...
By Peter Voelpel <df3kv@...> · #1965 ·
Re: hi power mobile
** In Europe, Diesel vehicles are already using 42v electrics to make for easier starting in cold weather. At the current price of copper, the savings per automobile are considerable. R. L.
By R L Measures · #1964 ·
hi power mobile
One would think the logical way to go, would be a 24-26 v system.. instead of 12 v ? You could use something like 2 x cat batteries in series.... with a 28 V... 3 phase alternator. You could
By pentalab <jim.thomson@...> · #1963 ·
Re: The real benefits of running qro.
little screws on the feedtru proved to be the culprit so PE1LRF machined 2 massive feedtru insulators for me and I fitted both the B+ and mass cables with 8 mm lugs and 8 mm
By Phil Clements <philc@...> · #1962 ·
Re: The real benefits of running qro.
or hello power bill Bill Turner <dezrat@...> wrote: ORIGINAL MESSAGE: <rbonner@...> wrote: ------------ REPLY FOLLOWS ------------ I would hope instead of "hello radio" it
By FRANCIS CARCIA <carcia@...> · #1961 ·
Re: loading coils.. + corona effects ?
wrote: with reasonable wire size ### Point well taken. I thought of that this am, while driving to work. Parallel resonant traps are a whole new ball game. I also noticed on some of these 80m
By pentalab <jim.thomson@...> · #1959 ·
Re: The real benefits of running qro.
OK rog. this stuff is beyond 2/0 its 750MCM two steps up. Yeah funny how the manufacture (Henry) even lets you down. 1V drop inside their amp chassis. They were never the brightest bunch over
By Robert B. Bonner <rbonner@...> · #1960 ·
Re: The real benefits of running mobile qro.
Dick I feel your pain¡­ WOW those are serious batteries. Only 155# each plus the battery box you¡¯ll need to hold them. That¡¯s serious weight to haul around. If you remember what I was
By Robert B. Bonner <rbonner@...> · #1958 ·
Re: The real benefits of running qro.
Bob, according to this table http://www.bnoack.com/index.html?http&&&www.bnoack.com/data/wire-resistance.html 70 mm2 is AWG 2/0 I run 2 conductors from the alternator to the batteries /amplifiers
By PA3DUV <pa3duv@...> · #1957 ·
Re: The real benefits of running mobile qro.
Bob, I tried the caps some years ago when I ran a single 500 watt SGC amplifier.. Yes they work, but only at very short bursts. With the two Henry SS750 amps @ 1 kW out each I had to ask myself:
By PA3DUV <pa3duv@...> · #1956 ·
Re: The real benefits of running mobile qro.
Bob, The 5 inch HiQ 5-80 HP will most likely outperform the Predator big time. The mickey mouse 3" coil on the Predator will show at least 3 dB higher losses on 80 meters, not to mention 160
By PA3DUV <pa3duv@...> · #1955 ·
Re: The real benefits of running qro.
Dick that sounds good. You've spent some time on the project. Here's my thoughts on the DC buss. Lead Acid Batteries don't supply much power. They are native 12.8 VOLTS. The Alternator
By Robert B. Bonner <rbonner@...> · #1954 ·
Re: The real benefits of running mobile qro.
Lets not confuse HI-Q brand name with HI-Q Coils. I reviewed the HI-Q Antenna info early this AM. The wire is light duty in the coil compared to my PREDATOR and the base mounting bolt is 3/8"
By Robert B. Bonner <rbonner@...> · #1953 ·
Re: The real benefits of running mobile qro.
Dick -- Excellent R. L. Measures, AG6K, 805.386.3734 r@..., rlm@..., www.somis.org
By R L Measures · #1951 ·