- 1 1/3 cups uncooked rice
- 5 cups water
- 2 cinnamon sticks
- 1/3 cup sugar
- 1 cup milk
- 1 tsp vanilla extract
1) Place the rice, cinnamon sticks and 2 cups of the water into a blender.
2) Grind the ingredients for 1 minute.
3) Add the remaining water and blend for 30 seconds.
4) Refrigerator the mixture overnight.
5) Filter the mix and add the remaining ingredients.
6) Serve chilled or over ice.
- Three batches will make 1 gallon.
In a previous post I wrote about using an Android based Nexus 7 to control a KX3. These are some images of using the Nexus 7 to control a Yeasu FT-817. You can download a copy of the application if you would like to experiment with it.
The 817 is connected to a USB to RS-232 converter using the standard Yaesu CAT cable.
This is an image of a macro used to set the frequency of the 817.
I like the portability and resolution of the Android based Nexus 7 and wanted to use it to control my QRP radios. Luckily in recent releases of the Android operating system an application can control a USB device directly without rooting the device. I wrote an Android application that controls the radios using a USB UART connected to the Nexus 7. You can download a copy of the application if you would like to experiment with it.
The following images show the tablet controlling a KX3 with the USB control cable that comes with the radio.
This is the screen used to select a macro to modify or create a new one.
This is the screen used edit and test a macro. The macro shown sets the band of the KX3 by sending a programming control command.
I have standardized on Panasonic NCR-18650B Li-Ion cells to externally power my QRP radios, currently a KX3 and an FT-817. The three cell project will power both radios and has a high gravimetric energy density. However; it runs both radios at less than maximum transmit power.
Sometimes it is desirable to power the radios at consistent maximum transmit power, even at the expense of some operating efficiency and supply energy density. This battery operated power supply is designed to run QRP radios at maximum transmit power and provides 90 watt hours of energy. Additionally it is water proof, has space to hold a couple of power cords and is a rugged design.
|Power Supply Materials
||Li Ion battery
|| Panasonic NCR-18650B
||Four cell holder
||DC-DC step down converter
|| LM2596 (In:3-40V Out:1.5-35V, 3A)
|| Protective case
|| Pelican 1020 Micro Case
The two battery holders are hot glued back to back and oriented so the leads align from each side. The 20 AWG leads are fitted with 15A Anderson Power Pole connectors and connected in series. The batteries provide 4A between 33V and 20V depending on charge level.
The DC-DC step down converter is hot glued to the side of the battery holders and fitted with 15A Anderson Power Pole connectors. The output connector has both the positive and negative contacts bonded together and they are separated on the input so each side can be plugged into the battery connectors. The output is adjusted for 15V which runs both the KX3 an the FT-817 at full transmit power. The power supply fits nicely into a Pelican 1020 micro case which suits my needs for paddling and backpacking.
I chose not to cut a hole or notch in the case for the power cord so I use it with the case lid resting on the power cord that is connected to the radio. The weight of the lid provides some strain relief for the cord. For transporting the DC-DC converter is un-plugged from the batteries.
These battery holders have a cell protection PC board and it requires that the batteries are charged in the holder some amount before it enables the cells. For this reason, you can’t simply replace depleted cells in the field with charged ones unless you apply some charge after they are installed.
I selected Panasonic NCR-18650B Li-Ion cells to power my KX3 in addition to the internal battery to avoid opening the transceiver in the field when the internal cells are discharged. These cells have a high energy density, a low self-discharge rate and three cells provide 30 watt hours of energy. The cells are charged individually in a Li-Ion charger and then placed three in a cell holder to power the transceiver.
These cells don’t have internal protection and for safety they should be removed from the holder and placed in a plastic case after using the transceiver.
The difference in the capacity of the battery pack between discharging to 8V (minimum for the KX3) and 8.5V (minimum for the internal NiMh batteries) is only 50mAH. The battery discharge warning is set to 8.5V since it is convenient to use the same setting for both types of batteries.
|Battery Pack — Discharge Rate / Capacity @ 8.5V cutoff @ 25C
My ham shack is powered by six solar panels mounted above my south facing garage door. Many passing neighbors make comments about the attractive garage awning. When I explain that it is made from solar panels that are surprised because the panels don’t look how most people expect. These Kaneka thin film panels are designed for grid tie applications, tolerate shading and can be connected in parallel to increase capacity. It is difficult to tell with the reflections that the panels are a deep purple color.
Solar Panels Cleaning Position
|Kaneka – Thin Film Silicon PV Module
||Voltage @ Max Power
||Current @ Max Power
|Voltage @ Open Circuit
|Current @ Short Circuit
||960 x 990 x 40mm
Solar Panels Summer Position
The angle of the panels is adjusted by using different length PVC pipes to prop the bottom edge of the panels away from the garage wall. The picture doesn’t show the deck screw and washer in the wall for each pipe that keeps the pipe in position. There is also a hole in the panel frame with a screw protruding to keep that end in place.
|PVC PIPE – TILT ADJUSTMENT
Solar Panels From Below
The panels are mounted on the wall with treated 2x4s and hinges with deck screws holding the base boards to the garage studs. The panel wires are rated for through wall use and each is fed into a junction box and a dedicated circuit breaker. After the individual breakers the panels are connected in parallel and wired to a combined circuit breaker before routing to the charge controller.
The charge controller is a Xantrex XW-MPPT60-150. It is a maximum power point tracking charge controller so it can efficiently use the highly variable voltage coming off of the panels to charge the battery. It has an input operating voltage of 12V – 140V and a maximum current on both the input and output of 60A. It can be configured for battery voltages in steps from 12V to 72V.
A fused 12V power line runs from the 110 AH flooded lead acid battery to a DC distribution panel mounted behind the PC monitor at the radio station. The AC power distribution can be powered from either the AC mains or a pure sine wave inverter near the battery.
This panel configuration has no trouble keeping the single battery charged during high light months for normal shack use. During low light and high demand periods it can be charged with a 12V automotive charger. On a summer day the 360W array can produced 1.5kWH in it’s partially shaded location.
I use a Pelican 1170 case to protect my KX3 while paddling and backpacking. The waffle foam in the top is trimmed to relieve the pressure on the knobs when the case is closed. The case is waterproof and the 1170 is a good compromise between shock protection and size. There is a extra room below the transceiver to add some additional accessories in the future.