A few years ago I picked up a couple of the Hobbyking LiFePO4 packs, and a
couple friends of mine did also. Every one puffed after some months despite
being properly balance charged, not overdischarged, and not really used
very hard. They continued to operate, but they were clearly outgassing.
I've
A couple of tips on this subject:
1) DON't use Monofilament or other stretchy line. Instead use a
non-stretching line of which there are many these days. They don't
store energy and create a dangerous stored energy system aimed at you
when you pull back on the line.
2) DON't use lead sinkers. Ten
That will be a marketing control decision.
-- Alan, W6AKB
On Wed, Aug 15, 2012 at 6:33 AM, Don Wilhelm wrote:
> That is a restriction placed by Yamaha - I do not know the reason, but
> just "stating the facts"
>
> 73,
> Don W3FPR
>
> On 8/15/2012 9:09 AM, Tom Boucher wrote:
>> Mike,
>>
>> This
I put Lipos in my K2 years ago (photos are on my website), they are
still going strong and hold a charge for years. But if I was going to
do it now I would put 4 of the A123Systems M1 LiFePO4 cells in. 2.3AH
and no danger of venting to flame. They can be charged from 14.6-14.8V
and if desired a sma
1) Anderson PowerPoles can be configured to be gendered, though the
"Ham Radio Standard" configuration did not choose to do this.
2) I have used the Molex since Heathkit days. Lots of them. They are
just plain unreliable in the longer term.
3) PowerPoles can easily be locked together when desired
My experience with network gear is that different designs use
different frequencies for the oscillators and such, so it is likely
that both of you are correct! Newer gear tends to have higher
frequencies and lower power in the general trend, so changing or
upgrading gear may help the level of i
I have two 100 megabit switches within six feet of the radio, and can
barely hear the spur on 14.030, so experience varies. Two spurs at
21.055 are below s0 with preamp #2 on. Wonder where the gigabit spurs
are, that may be another solution, though gig switches are 100
compatible as well..
--
I have purchased a lot of HF and VHF/UHF radios over the years that
require 5 to 30 amps of 12 volt power. They all came with factory
connectors. Almost without exception they were connectors that were
not readily available. Most were marginal mechanically and not really
adequate for the peak c
Chris et al:
A better technique is to use a power supply that is designed to float
across and manage batteries. They call them RV Converters. They are
very cost effective, and at least some of them are very RF quiet. No
diodes are required, and the supplies are designed to withstand the
loads
A better technique is to use a power supply that is designed to float
across and manage batteries. They call them RV Converters. They are
very cost effective, and at least some of them are very RF quiet. No
diodes are required, and the supplies are designed to withstand the
loads and voltages o
Padded envelopes don't protect the contents very
well. If the contents get smashed the customer is
not happy, the vendor is not happy, and everyone
has to wait and it costs more money. Elecraft is wise.
Recycle those pillows!
73,
-- Alan, wb6zqz
At 06:08 AM 5/29/2007, Håkan Olsson wrote:
O
B6ZQZ
-- www.AntennaLaunchers.com
At 09:04 PM 5/27/2007, Don Rasmussen wrote:
Hi Alan,
You hit the nail on the head, I think with a small
amount of room light the display should look like the
attached photo. beauty.
Thanks,
Don
--- Alan Biocca <[EMAIL PROTECTED]> wrote:
> I believe that Wayne
I believe that Wayne indicated that the LCD is transflective, so it
will be viewable with or without backlight.
-- Alan, wb6zqz
At 08:41 PM 5/27/2007, Don Wilhelm wrote:
Don,
I am not certain what you mean by 'view the display in LCD fashion', BUT:
The LCD Backlighting intensity is adjustab
It does not take much RF in the shack/house to cause problems. Keep
the RF outside.
An effective balun goes a long way to avoid these problems.
Noise from the house couples to the antenna if there is not an
effective balun, raising the receiver noise level. Using an effective
balun can lower
Another way to do this:
To attach a wire to the end of a fishing pole like the DK9SQ I tape the
wire to a two inch piece of small diameter polyethylene tubing. This is
slipped over the end of the pole and the taper of the pole holds it in
position. Choose a diameter small enough to fit as clo
Changing feedline length makes two important differences. One in the
internal path length (which makes an impedance transformation) and one in
the external path (if there is not an adequately effective balun at the
feedpoint). The impedance of this outside path can vary over a considerable
rang
Since the one single channel DDS is used for transmit and receive, and it
is bumped in frequency a bit for the required offset between the two modes,
it is hard to do a spot function since that small low power DDS chip only
does one frequency at a time.
-- Alan wb6zqz
> -Original Messag
17 matches
Mail list logo
