GM Gene,
Useful information. Thanks.
First of all, LiFePo is not like other battery technologies.
It was built to maintain its level much longer, even until it is almost run
down, and it also handles peak current significantly better than other
battery technologies.
Here's the specs on the one I'm looking at:
Kapazität
12Ah
Nennpannung
12,8V Nominal Voltage
Zyklenfestigkeit
Ladeschlussspannung
14,4V Starting Voltage
Entladeschlussspannung
10V Discharged Voltage
max. Ladestrom
12A Max charging current
max. Entladestrom (Dauer)
12A Max continuous current drain
max. Entladestrom (Puls)
24A Max peak current drain
Selbstentladung (monatlich)
< 5%
Arbeitstemperatur (Laden)
0°C + 60°C
Arbeitstemperatur (Entladen)
-20°C + 60°C
Lagertemperatur
-20°C + 85°C
Anschlüsse
Faston 6,3
Lieferumfang
Abmessungen
151x97x98
Gewicht (g)
1900 4.bs. 3oz.
PRICE
146 Euro (abt. $183)
AND, I will reduce power to 25 or 30w anyway.
I will make up for that with a good antenna.
Sounds like that chip mod may well be worth it.
Thanks for the tip.
73 - Rick, DJ0IP
(Nr. Frankfurt am Main)
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Gene Hall
Sent: Tuesday, April 28, 2015 1:28 AM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] OT: Anyone used LiFePo technology yet for portable
operations?
Rick ... I also have a Scout I used extensively for mobile ops a number of
years ago. I had to keep the engine running in my van to keep it stable, a
battery just wouldn't do it after the "float" charge is gone. The stability
issue comes from the need for sufficient overhead voltage for the three
legged regulators used in the Scout. In mine the receiver would still work
fine but the transmit audio was garbled.
There was an article on the web at one time that changed out the chips for
ones needing less overhead voltage. I would try operating using a 13.8 volt
power supply that you can turn down to determine when yours has a problem
before you invest in a battery.
Another issue is the battery itself, a 12 AH battery will likely suffer
permanent damage if you pull more than about 6 AH out of it and continue
operating.
I still have my Scout and would use it mobile anytime but operation from a
12 volt battery will likely be disapointing.
Gene ... W4TCO ... Irmo, SC
On Mon, Apr 27, 2015 at 4:47 PM, Rick - DJ0IP / NJ0IP <
<mailto:Rick@dj0ip.de> Rick@dj0ip.de> wrote:
> Hi Kevin,
>
> Tnx for that info.
> I know the Scout needs 350 mA on RX.
> Worst case it is easily convertible to a QRP rig.
>
> My plan was to run it at about 25w.
> I'll just have to test it.
> From what I have seen, most SOTA operations don't last very long anyway.
>
> Do you happen to know what voltage the Scout gets squirrely at?
>
> Actually the LiFePo batteries tend to deliver full voltage for most of
> their charge. This is one advantage they have over other
> technologies, so this data point may turn out to be the decisive one.
>
> Tnx
>
> 73 - Rick, DJ0IP
> (Nr. Frankfurt am Main)
>
>
> -----Original Message-----
> From: TenTec [ <mailto:tentec-bounces@contesting.com>
mailto:tentec-bounces@contesting.com] On Behalf Of Kevin
> Anderson via TenTec
> Sent: Monday, April 27, 2015 8:03 PM
> To: <mailto:tentec@contesting.com> tentec@contesting.com
> Subject: Re: [TenTec] OT: Anyone used LiFePo technology yet for
> portable operations?
>
> I don't have specific experience with the batteries you ask about.
> I'm replying because I recall that the Scout quickly gets "squirelly"
> with low battery voltage. I remember when I first got my used Scout
> back in 1999 and was tuning several brand-new Hamstick antennas
> without the car running, and so just running off the car battery. And
> it didn't seem to take long before the radio was squawking and making
> extra noises as the car battery started to run down. So make sure you
> get a battery setup with enough capacity, or run with a battery
> booster, to make sure you can operate cleanly for your entire expected
> length of time for operating, as the Scout's receiver is relatively
> thirsty compared to other portable radios.
>
> Cheers/73,
> Kevin, K9IUA
> --
> -------------------------------------
> Kevin Anderson, Dubuque IA USA, K9IUA
> k9iua (at) yahoo (dot) com
> -------------------------------------
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