RadioBanter - Looking for this cigar lighter adapter

RadioBanter (https://www.radiobanter.com/)

- Equipment (https://www.radiobanter.com/equipment/)

- - Looking for this cigar lighter adapter (https://www.radiobanter.com/equipment/10981-looking-cigar-lighter-adapter.html)

I wonder how one might be able to use a 1-3 farad capacitor to operate a 100
watt HF radio with better regulation and higher average current on SSB.. The
big audio amps use this technique effectively.

"Keyboard In The Wilderness" wrote in message
news:nhL%a.4824$S_.966@fed1read01...
John FYI -- from a recommended book:
Mobile power. It is tempting to use the cigarette lighter plug for 12
Volts
to power the mobile radio and this may work for low power units, but it is
always best to run two heavy gage wires through the firewall and directly
to
the battery via fuses in both lines. Don't use the chassis as a ground
return, ground loop problems and noise pickup may occur, run both + and -
lines to the battery. FM mobile transceivers with 50 W of output power can
draw up to 10-12 Amperes of current at 12 Volts. Most cigarette lighter
plugs cannot handle these high currents. Operating a 50 W mobile
transceiver
from the cigarette lighter plug may cause permanent damage to vehicle's
electrical system, and can also be a fire hazard. You can probably operate
a
6 W handheld transceiver from the cigarette lighter plug, but not a higher
wattage radio.
============================================
"John LeMay" wrote in message
...
I recently purchased a used rig and along with it came a nice cigar
lighter adapter that terminated in two "lugs" with screw on caps for
attaching the power cable of the rig. There is no cord on this adapter
itself. Anyone know where I can find a couple more of these? They seem
ideal for running moderate powered mobile rigs ( 50W ).

thanks!

--
John LeMay
kc2kth
Senior Technical Manager
NJMC | http://www.njmc.com | Phone 732-557-4848
Specializing in Microsoft and Unix based solutions

On Wed, 20 Aug 2003 01:35:11 GMT, AGRAY6 wrote:
I wonder how one might be able to use a 1-3 farad capacitor to operate a 100
watt HF radio with better regulation and higher average current on SSB.. The
big audio amps use this technique effectively.

The big audio amps need very short pulses of power, and they combine
the large capacitor with the heavy gauge wires mentioned:

"Keyboard In The Wilderness" wrote in message
news:nhL%a.4824$S_.966@fed1read01...
John FYI -- from a recommended book:
always best to run two heavy gage wires ... directly to the battery

Perhaps a capacitor would be helpful if doing CW rather than any
modulated carrier scheme with its longer power demands, but most
radios seem to have sufficient capacitance if your power wiring
is sufficient to meet their average high demand.

sdb

--
| Sylvan Butler | Not speaking for Hewlett-Packard | sbutler-boi.hp.com |
| Watch out for my e-mail address. Thank UCE. change ^ to @ |
It may be better to live under robber barons than under omnipotent moral
busybodies. The robber baron's cruelty may sometimes sleep, his
cupidity may at some point be satiated; but those who torment us for our
own good will torment us without end, for they do so with the approval
of their consciences. -- C. S. Lewis

On Sun, 17 Aug 2003 23:20:22 +0000, Gary S. wrote:

Car stereo places and installers are sometimes a good resource for this
sort of thing, as they need the same type of feedthrough.

Well, just a follow up on this. I gave in and went to the local car stereo
installer and had them do the job. While I was at it, I had them install a
small (3") 12V fan for some extra air flow. I wanted to install the rig in
an enclosed area in the console that was just wide enough for the rig,
about 10" deep and about 8" high. This "pocket" was all plastic -
including the back - however there was nothing behind the pocket under the
dash. The installer cut a small hole for the fan and tied it so that if
the car is on, so is the fan. It's pretty quiet most of the time as well.

Anyhow, the fan moves about 22cf/m of air into this pocket and out the
front right across the heat sink of the radio (the entire bottom of the
rig on the Yaesu 8800). It keeps the rig nice and cool even in pretty
heavy duty cycles at 20W or so. I haven't run the rig "wide open" for any
length of time yet, but I'm willing to bet the rig would still stay pretty
cool.

Thanks for all the input. I'm much happier not having wires running around
the cabin into the cigar lighter. Now that everything is wired, I have the
lighter adapter to use in my wife's car when needed for those short trips.

--
John LeMay
kc2kth
Senior Technical Manager
NJMC | http://www.njmc.com | Phone 732-557-4848
Specializing in Microsoft and Unix based solutions