开云体育

So many people seem to have done the green wire mod and used the dry cell
carrier to hold NiMH cells and not mentioned any problems that I was
surprised to end up abandoning the attempt. The carrier, filled with
batteries, is too tight a fit to go in my FT-817.

You must fill battery tray while it is in the radio.

It would certainly not be
possible to just unclip the battery cover and swap the battery packs over
quickly when one runs out, as I had originally intended.

I switch to external power at this point or run lower power to entend my
time

It seems to me that the correct
way to put the battery carrier in is with the cells facing downwards.

That is the way my tray arrived and I assume that is the norm. Comments
from others?

I have done the green wire mod and everything is running great with a set of
unfused rechargeables. I new battery tray from Yaesu would "repair" my
green wire mod -- anyone try to buy one from Yaesu? Price?

--
Rich Clemens
clemens@...

So many people seem to have done the green wire mod and used the dry cell
carrier to hold NiMH cells and not mentioned any problems that I was
surprised to end up abandoning the attempt. The carrier, filled with
batteries, is too tight a fit to go in my FT-817. It seems to me that I
would have to undo the screws and remove the bottom half of the case
completely before I could get the pack in. It would certainly not be
possible to just unclip the battery cover and swap the battery packs over
quickly when one runs out, as I had originally intended. Since there isn't
much point in having two battery packs, one of which I can't use, I have
decided to carry on with the Yaesu rechargeable pack that came with the
radio. Anyone want to buy 8 1500 mAH NiMH cells, unused? I already have
plenty of spares. Pity I didn't discover this until after I removed the
green wire.

Incidentally I discovered that with the pack going in the way that looks
intuitive to me, ie with the batteries visible, there is a fair chance that
the edge of the battery cover aperture, which has quite a sharp edge, could
cut into the batteries and cause a short. It seems to me that the correct
way to put the battery carrier in is with the cells facing downwards. Then
the cloth strips on the back side of it are facing up and in the right
position to take any chafing from the sharp edged aperture. However, when
you do that the cells fall out while you are struggling to get the thing
into the radio, just to add to the fun. I wish I'd never started this.

I presume that either the way my 817 has been assembled has left not quite
enough clearance, or else the NiMH cells I got are a tad larger than normal
AA cells. Though I have never tried using ordinary cells, so I can't
confirm this.

--
Julian, G4ILO. (RSGB, ARRL)
Home page:

It never occurred to me to do that. In fact, I had initially covered
the cells with electrical tape to provide some extra insulation,
before putting the whole lot in, but this just added to the tight fit
problem. Of course to do this the side where the cells go in must be
visible with the cover off, which means you have got the problem of
the sharp edge surrounding the cover contacting the bottom row of
cells. I am not happy with that. It is inviting a short circuit to
happen in my opinion.

Julian, G4ILO

--- In FT817@y..., "Julian, G4ILO" <g4ilo@q...> wrote:

So many people seem to have done the green wire mod and used the

dry cell

carrier to hold NiMH cells and not mentioned any problems that I was
surprised to end up abandoning the attempt. The carrier, filled with
batteries, is too tight a fit to go in my FT-817.

<SNIP>

I presume that either the way my 817 has been assembled has left

not quite

enough clearance, or else the NiMH cells I got are a tad larger

than normal

AA cells. Though I have never tried using ordinary cells, so I can't
confirm this.

--
Julian, G4ILO. (RSGB, ARRL)
Home page:

Julian,

The AA batteries come in several standard sizes and a few non-
standard. Users beware. Not all fit in the 817. Diameters of some
are 16.5 mm rather than 14.5 mm and the lengths are up to 2 mm or so
longer. THis is true esspecially of some very high-capacity cells.

73 de Barry - W4WB

The ones I got from Maplin Electronics are, as near as I can measure
them with just a ruler, 15.0mm in diameter. The fit in the 817 is so
tight that extra half a millimeter will make a big difference.

Julian, G4ILO

--- In FT817@y..., w4wb@a... wrote:

Julian,

The AA batteries come in several standard sizes and a few non-
standard. Users beware. Not all fit in the 817. Diameters of some
are 16.5 mm rather than 14.5 mm and the lengths are up to 2 mm or

so

longer. THis is true esspecially of some very high-capacity cells.

73 de Barry - W4WB

My battery tray has a plastic flap that protects the cells from the edge of
the case. This may be a new addition, as the unit is not yet a week old. I
too had a problem in putting in the tray will NiMh cells loaded. Much
better idea putting them in with the tray in situ.
I carefully removed the green wire from the connector and "hid" it under the
cloth tape. Can easilly restore unit to "Factory Default"

Richard VK3KF
which means you have got the problem of
the sharp edge surrounding the cover contacting the bottom row of
cells. I am not happy with that. It is inviting a short circuit to
happen in my opinion.

Julian, G4ILO

--- In FT817@y..., "Richard Clemens" <clemens@w...> wrote:

> You must fill battery tray while it is in the radio.



To unsubscribe from this group, send an email to:
FT817-unsubscribe@... and for a great FAQ ( Frequently Asked
Questions ) see
Please note that your messages and files sent to this group become public
domain upon submission and may appear anywhere on the Internet or in print
without notice or compensation.



Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.

I will measure my cells but they are not tight at all. Easily slide
under case edge. Mine are off the shelf cells made for general
consumer use.

--
Richard Clemens
clemens@...

Barry, I've been trying to follow all the cell messages, I apologise if this has been covered.

Last night there was the Mother and Father of all thunder storms, as a result I was without electricity for a few minutes. When the electricity was restored the other set of NiMH cells started charging again, as I had left them sitting in the external charger being trickle-charged for when next needed.

Can I do any damage by effectively giving a 7 hour cycle to a set of 1.8 Ah cells which are already fully charged? I noticed that they get quite hot when charging. I'm using a German FRIWO charger (if that means anything to you).

Simon Brown
---
Casa Bergenia, 7031 Laax, Switzerland
Tel: +41 81 921 6853, Radio: HB9DRV

The carrier, filled with batteries, is too tight a

fit to go in my FT-817.

Julian, Yours is like all of the FT817s. I would
guess that it was done to help hold the batteries
in the carrier. I also have to remove the batteries
to get the carrier out, only 4 need to be removed
to get it out. I just remove one from each section
and the others slide towards the connector end and
out it comes. Besides when I carry extra AA batteries
I have them flat inline because they pack better that
way.

73, Skip Davis NC9O

=====
Skip Davis, NC9O

__________________________________________________
Do You Yahoo!?
Get personalized email addresses from Yahoo! Mail

Hi

So many people seem to have done the green wire mod and used the dry

cell

carrier to hold NiMH cells and not mentioned any problems that I was
surprised to end up abandoning the attempt. The carrier, filled with
batteries, is too tight a fit to go in my FT-817.

I had exactly the same problem - I thought my cells were large ones -
but they fit everything else. I have not tried Duracells - to
expensive in the UK, but I wonder if they will go in.

Pity I didn't discover this until after I removed the
green wire.

I'm glad I tried before cutting any wires!

Incidentally I discovered that with the pack going in the way that

looks

intuitive to me, ie with the batteries visible, there is a fair

chance that

the edge of the battery cover aperture, which has quite a sharp

edge, could

cut into the batteries and cause a short.

I noticed this as well - I gave up before I did cause a short & blow
something up!

Anyone else had this problem?

73
Graham
G3MFJ

--- In FT817@y..., "Simon Brown" <simon.brown@b...> wrote:

Barry, I've been trying to follow all the cell messages, I

apologise if this has been covered.

Last night there was the Mother and Father of all thunder storms,

as a result I was without electricity for a few minutes. When the
electricity was restored the other set of NiMH cells started charging
again, as I had left them sitting in the external charger being
trickle-charged for when next needed.

Can I do any damage by effectively giving a 7 hour cycle to a set

of 1.8 Ah cells which are already fully charged? I noticed that they
get quite hot when charging. I'm using a German FRIWO charger (if
that means anything to you).

Simon Brown

Hi Simon,

Wow! Sounds like some storm. If the batteries were fully charged
and on trickle charge, then it is not a good idea to try to charge
again. This is called overcharging. I don't know the FRIWO charger,
but I expect that it provides at least a few hundred mA. It is
likely that the max overcharge current for your batteries is about
150 mA. Above that, you can degrage capacity and lifetime.

72 de Barry - W4WB

I have done the green wire mod and everything is running great with a set

of

unfused rechargeables. I new battery tray from Yaesu would "repair" my
green wire mod -- anyone try to buy one from Yaesu? Price?

I had no problem using a pin to remove the green wire from the little white
carriers and store it inside the battery cover with tape, thus being able to
reinsert the wire when necessary.

And I have had no problems with spring tension or overcharging since
December 2000.

As to people being concerned about 2x8 or 2x10 hours, since my 1600mAH Sanyo
NiMh cells are room-temp cold at the end of charge, I am not stressing about
overcharge.

Thanks

Pres Waterman W2PW
c/o Patchogue Motors, Inc.
Long Island Ford and Kia dealer

GO BILLS!

--- In FT817@y..., "Julian, G4ILO" <g4ilo@q...> wrote:

I have been using the 1800 mAh AAs from
www.greenbatteries.com
since father's day.
I have charged them in the 817 as
well as in the 2 hour charger from
greenbatteries.

When removing them and reinstalling
them, it isn't any more tedious than
with AA alkalines. And, they charge
so fast in the sparate charger that
I almost always use it.

I have made DX QSO's with these internal
cells with Europe on 20M/SSB using a
dipole. As well as numerous CW&PSK QSO's.
The voltage is obivously low (9.6V) versus
the alkalines (12V) , but the operating time
is much-much longer.

Also, be advised that you have to
charge/discharge these cells at least three
to four times before they give their true
performance.

BCNU DE N2LO~>

From a previous post
FYI, FT817 Part Numbers that maybe useful:

Description P/Nos $ Cost
Case Upper Side CP6960001 $ Not Stocked Yet
Case Lower Side RA027080A $ 4.97
Battery - Cover Door RA027090A $ 3.96
Battery - AA Holder CP6863001 $ 14.18
Tuning Knob RA0269700 $ 4.97
Tuning Knob Rubber RA0269800 $ 3.27
AF(Volume) Knob RA0269400 $ 0.69
SQL(Squelch) Knob RA0269500 $ 0.43
Selector Knob RA0269600 $ 0.81
Data Plug (No Cable) P1090925 $ 1.84
ACC Plug (No Cable) P1040804 $ 2.30
Mic Cable, RJ to RJ S8100380 $ 13.18

Yaesu Support @ (562) 404-2700
Extn: 351 - Parts, Extn: 242 - Tech Support

--- In FT817@y..., "Simon Brown" <simon.brown@b...> wrote:

Last night there was the Mother and Father of all thunder storms,

as
a result I was without electricity for a few minutes. When the
electricity was restored the other set of NiMH cells started charging
again, as I had left them sitting in the external charger being
trickle-charged for when next needed.

Can I do any damage by effectively giving a 7 hour cycle to a set

of
1.8 Ah cells which are already fully charged? I noticed that they get
quite hot when charging. I'm using a German FRIWO charger (if that
means anything to you).

Simon Brown
---

Yes, you can damage them this way! I found an application manual for
Panasonic NiMHs some time ago on their website, and they state that
overcharging those cells is to be avoided, because the life
expectancy will drop. Even trickle charging those cells should be
limited to 10 hours!

Is that Friwo charger explicitly for NiMH? I once tried to
fast-charge a NiMH pack with a charger for NiCD and they got awfully
hot (over 50 degree C) because the detection algorithm waited for a
higher voltage drop than the NiMHs could give...

Greetings,

Rainer DG1SMD from Adelberg JN48TS

BTW Simon, when on top of your mountain: can you operate DB0RIG
(145.775)? Thats our repeater, and I watch this frequency fairly
often...

Interesting that Yaesu have apparently felt the need to add an
insulating flap. The idea of keeping the cells in the tray was to
make a battery pack that I could quickly exchange with the standard
one tha came with the radio. Removing them individually isn't as
easy, but I see now why some people found the problem of the springs
in the dry-cell carrier losing their tension.

Julian, G4ILO


--- In FT817@y..., "Richard B" <richardb@a...> wrote:

My battery tray has a plastic flap that protects the cells from the

edge of

the case. This may be a new addition, as the unit is not yet a

week old. I

too had a problem in putting in the tray will NiMh cells loaded.

Much

better idea putting them in with the tray in situ.
I carefully removed the green wire from the connector and "hid" it

under the

cloth tape. Can easilly restore unit to "Factory Default"

]

Yikes! So how do you use these cells in an 817, given that the radio
trickle charges them the whole time it has power connected? Anyone
whose 817 spends most of its time connected to an external supply, as
mine does, using NiMH's would seem to be a bad idea.

Julian, G4ILO

--- In FT817@y..., rainer.schmitz@t... wrote:

Yes, you can damage them this way! I found an application manual

for

Panasonic NiMHs some time ago on their website, and they state that
overcharging those cells is to be avoided, because the life
expectancy will drop. Even trickle charging those cells should be
limited to 10 hours!