Thanks
Kevin for the reply. I am trying to find someone that just sells
the battery alone. Not the charger or battery plate. I already
have that. Just need a smaller battery than the 8 cell one I
have.
Dave
On 3/27/2025 3:03 PM, Kevin - K5KTM via
groups.io wrote:
If you have not done so yet I would highly recommend just going
with the windcamp battery. I’m not sure what you are running but
the windcamp has been excellent for me. Works great for my POTA
stuff. Rarely have I had to go to my backup 5ah battery.?
I’m sure there are differing opinions on this but my
experience with it has been very positive.?
On Mar 27, 2025, at 14:47, David
Tucker via groups.io <nu4ndave@...>
wrote:
?
Ok
Martin the battery is a 8 cell 2000mAH. Size is 4 inches
x 2 1/2 inches. Takes up the entire compartment. No way
will the Wind camp panel I ordered will fit.
Dave
On 3/27/2025 2:34 PM, David
Tucker wrote:
Thanks for the reply Martin. I will
open the rig up and get back to you.
Dave
On 3/27/2025 12:32 PM, Martin
HB3YDM via groups.io wrote:
Hi Dave does you have an pictures from the Battery
with the technical data?
?
Vy 73 de Martin HB3YDM
--
73's de NU4N
--
73's de NU4N
--
Thanks Dave NU4N
--
73's de NU4N
-- Thanks Dave NU4N
dwtucker19@...
|
If you have not done so yet I would highly recommend just going with the windcamp battery. I’m not sure what you are running but the windcamp has been excellent for me. Works great for my POTA stuff. Rarely have I had to go to my backup 5ah battery.? I’m sure there are differing opinions on this but my experience with it has been very positive.?
toggle quoted message
Show quoted text
On Mar 27, 2025, at 14:47, David Tucker via groups.io <nu4ndave@...> wrote:
?
Ok Martin
the battery is a 8 cell 2000mAH. Size is 4 inches x 2 1/2
inches. Takes up the entire compartment. No way will the Wind
camp panel I ordered will fit.
Dave
On 3/27/2025 2:34 PM, David Tucker
wrote:
Thanks for the reply Martin. I will open the
rig up and get back to you.
Dave
On 3/27/2025 12:32 PM, Martin HB3YDM
via groups.io wrote:
Hi Dave does you have an pictures from the Battery with the
technical data?
?
Vy 73 de Martin HB3YDM
--
73's de NU4N
--
73's de NU4N
-- Thanks Dave NU4N
dwtucker19@...
|
Ok Martin
the battery is a 8 cell 2000mAH. Size is 4 inches x 2 1/2
inches. Takes up the entire compartment. No way will the Wind
camp panel I ordered will fit.
Dave
On 3/27/2025 2:34 PM, David Tucker
wrote:
Thanks for the reply Martin. I will open the
rig up and get back to you.
Dave
On 3/27/2025 12:32 PM, Martin HB3YDM
via groups.io wrote:
Hi Dave does you have an pictures from the Battery with the
technical data?
?
Vy 73 de Martin HB3YDM
--
73's de NU4N
--
73's de NU4N
-- Thanks Dave NU4N
dwtucker19@...
|
Thanks for the reply Martin. I will open the
rig up and get back to you.
Dave
On 3/27/2025 12:32 PM, Martin HB3YDM
via groups.io wrote:
Hi Dave does you have an pictures from the Battery with the
technical data?
?
Vy 73 de Martin HB3YDM
--
73's de NU4N
-- Thanks Dave NU4N
dwtucker19@...
|
Hi Dave does you have an pictures from the Battery with the technical data?
?
Vy 73 de Martin HB3YDM
|
Re: Iambic mode - A or B?
Thank you for the quick reply, Bruno. I've used a Vibroplex semi-automatic key and a Lionel (I still have that) so I'm used to dits with the thumb and dahs with the index finger. In this case, though, I'm using the left hand and still have dits?with the thumb, dahs with the finger but of course they are on the opposite sides. I was told by my mentor (50+ years ago) that using a fully automatic key would ruin my fist, so I'm using the other hand.?
Rightly or wrongly, I've mounted my tiny stainless twin-paddle key on a box with knee straps. The box contains a PIC, a lithium cell and a 2.4GHz transmitter to make it cordless. I wonder whether this makes iambic keying more difficult because the key can twist slightly on the straps. I've tried turning the box around so the paddles are pointing away from me and my hand rests on the box to steady it, but the box has a sharp edge which needs to be padded.?
I might try a single paddle and forgo the iambic mode, or make? a sideswiper. I've never used one of those.
Thanks again and 73,
John G4EDX
Hi John
It’s a matter of preference, i would risk saying that Iambic B is the only mode on the FT817 and also risk saying that it is the most common mode to be using a paddle. The main difference is how it handles “squeeze” that is maintaining the dash paddle held down and insert a dit on the right timing.?
?
Also if you are new to paddle use, i would also recommend dash on the right dit on the left. You can learn either way and there is no right way but it’s what most people use.
?
hope that helped.
?73 de CT7AXA/PA7AXA
|
A hint about the battery you have would go a long way in getting feedback comparing the physical size of your battery to that of the windcamp battery...
?
Ken, N2VIP
|
I recently ordered a Wind Camp Battery plate. Seems the battery I have is too large for the plate.?? Dumb question, is the Wind Camp Battery that much small than the battery I? have? I assume so?
?
--
Thanks Dave NU4N
dwtucker19@...
|
Re: Iambic mode - A or B?
Hi John
It’s a matter of preference, i would risk saying that Iambic B is the only mode on the FT817 and also risk saying that it is the most common mode to be using a paddle. The main difference is how it handles “squeeze” that is maintaining the dash paddle held down and insert a dit on the right timing.?
?
Also if you are new to paddle use, i would also recommend dash on the right dit on the left. You can learn either way and there is no right way but it’s what most people use.
?
hope that helped.
?73 de CT7AXA/PA7AXA
|
As a long-term straight key operator trying to get to grips with iambic keying I would like to know whether the 817's internal keyer is mode A or mode B. Whichever it is, there isn't a choice, and I'm convinced that I would find the other mode easier!?
Any advice, please?
73,
John G4EDX --
|
Good morning to the group, take a look at the following site ,? has an excellent tutorial on aprs using direwolf on raspberry Pi using the digirig.
Vy73, Rick VE1RNM
On Thu, Mar 27, 2025, 10:45 a.m. Jeff Hanscom via <j.hanscom= [email protected]> wrote: Not specifically with APRS but with packet.? It was overdriving the input to the radio.? Need to cut the trace inside to reduce the audio.
?
73,
Jeff, KA1DBE
|
Not specifically with APRS but with packet.? It was overdriving the input to the radio.? Need to cut the trace inside to reduce the audio.
?
73,
Jeff, KA1DBE
|
On Wed, Mar 26, 2025 at 09:44 PM, vbifyz wrote:
You need to understand what you are doing, like closely matching the 2 strings
of 3 cells each when installing. Instruction manual is not included, but can
be found online.
That sounds like a really bad design. The cells do not stay matched and how do you match capacity? Any proper charger for multiple series LiIon cells needs a controller than measures each cell.
|
Or search for "aili 18650 powerbank".
This is the kind that satisfies the requirements. I haven't tested it for EMI with my FT-817 yet. Using it as an extra power for laptops.
It can charge from a 19V laptop power adapter with 5.5x2.1mm barrel tip and can output 5/6/9/12/15/19V selectable by mechanical switches on its 5.5x2.1mm socket. Has a USB-A output for the phone as well.
The best part for field operation is that you can replace 18650 cells with ones pre-charged at home, so essentially "unlimited" capacity.
You need to understand what you are doing, like closely matching the 2 strings of 3 cells each when installing. Instruction manual is not included, but can be found online.
?
73, Mike AF7KR
|
Hello,
Does anyone use the Digirig for APRS? How does it work?
Daniel PY2TDB.
|
Hi Dick
Thanks for help.
I did some search over the internet, but didn't get across this page. One thing that didn't came across my mind yesterday, was that you can calculate new values by multiplying lpf component values with freq(a)/freq(b). Thus the multiplier in this case is 50/75=0.67
The page you linked verifies that i am on the ballpark with calculations.
73, Jallu, OH4NDU
|
I have a 12V 24 aH (13.8V 24,000 maH) LiFePo as the largest practical size pack. I have two sets of Anderson Power Poles for 12V gear and two 12V to USB-C plug 5V 3A step-down inverters (for raspberry Pi + QHD screen or whatever). I got it to power my FTdx10, but of course it's fine for my FT817ND (and optionally PAs). It's charged by 2 x "100 W" solar panels easy enough to put in a small car. I mean to get a car charger and mains charger. The MPPT controller is a Victron (cheap model with no BT, so I had to interface the TTL serial to change it from Lead Acid to LiFePO4.)
Lives in a carry-case with shoulder strap along with LED meters.
The LiFePO4 has 3000+ full cycles rating (down to 10%) and a 1/3rd of weight of Lead Acid. Safer than LiPoly/LiIon. The cheap Lead Acid Gel / SLA for emergency backup (UPS, lights, Alarms) don't even quote cycles. The more expensive ones (more expensive now than LiFePO4) are about 100 to 200 cycles, but only if not fully discharged. The 200 cycles is about 70% usage.
|
Also, note - the power bank you linked to claims 20,000 mA, but at what voltage? I suspect at 3.7 volts, the voltage of the internal cells - 20,000 mA at 3.7 volts will be closer to 5,000 - 6,000 mA at 12 volts, maybe less. That may or may not meet your needs - that is something to consider when choosing power source.
?
Ken, N2VIP
|
?I’d stick with a 12 volt lifepo4 battery and use converters to power/charge 5 volt usb devices. I recently added the Windcamp battery kit?designed for the 817/818, it’s about $75. Also 3 18650 batteries in a 3 battery case work well and can be recharged with a 4 cell charger. Don’t risk messing with alternative power sources.?
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Show quoted text
On Mar 22, 2025, at 7:26?PM, Ken N2VIP <ken@...> wrote:
? The connected device controls the output voltage, you would use a cable configured to "tell" the power bank to supply it with 12v.
?
I don't think anything 'guarantees' the power bank won't provide a different voltage, just the presumption/expectation that the devices will work as designed.
?
To power an FT-817 type of radio with 12 volts, you would use a cable designed to priced the desired voltage, like this:
https://a.co/d/hNy4MWO
?
Hope this helps,
?
Ken, N2VIP
|
The connected device controls the output voltage, you would use a cable configured to "tell" the power bank to supply it with 12v.
?
I don't think anything 'guarantees' the power bank won't provide a different voltage, just the presumption/expectation that the devices will work as designed.
?
To power an FT-817 type of radio with 12 volts, you would use a cable designed to priced the desired voltage, like this:
https://a.co/d/hNy4MWO
?
Hope this helps,
?
Ken, N2VIP
|
David Tucker
Kevin - K5KTM
Martin HB3YDM
Bruno R.
Mike EI9FEB
Michael Davis