Electronics | Amateur radio | Nerdy Stuff
23cm related activity
An Eltek Flatpack2 HE 48V/2000W rectifier is being used as the power supply for a 23cm 600W LDMOS Power Amplifier project.
This touchscreen controller has been developed to control the Flatpack2 HE 48V/2000W, and display its data.
… Read more...
A reliable 5V power supply is required to power a controller for an Eltek Flatpack2 48/2000 HE rectifier being used as the PSU for a future 23cm 600W LDMOS Power Amplifier project.… Read more...
Based on the highly regarded PE1RKI power amplifier module, this is a fully assembled and tested – ready to use – 150 watt 1296 MHz power amplifier being offered for sale.
Ideal with Icom IC-910 10W class transceiver.
Features:
• 150 watt PE1RKI module ($430)
• N connectors
• Meanwell SE-24-450 24V 450W power supply, set at 27V ($170)
• … Read more...
Looking for a 1296 MHz (23cm) Power Amplifier?
After discounting a W6PQL based kit, a PE1RKI 23cm 150W Power Amplifier was decided upon.
Like the W6PQL design, the PE1RKI (Bert Modderman) amp uses a pair of XRF-286 transistors, but comes fully assembled and tested AND worked out cheaper (Dec 2012) than stuffing around building your own. It requires 8W of … Read more...
When is a transfer relay not a transfer relay?
Normally, a transfer relay can be considered as a “double change over” device, but not all transfer relays may be manufactured to behave like this… and this can be used to our advantage!
Purchased off eBay http://www.ebay.com.au/itm/300618827064 from “2010bluebook” in China (who has a 100% rating BTW), for USD$80 each including … Read more...
Here’s a rundown of my Trimble Thunderbolt GPSDO project.
It provides an accurate 10MHz reference for the transverter Local Oscillator PLLs.
The existing Thunderbolt mounting holes will be utilized, and mounted in a vertical orientation, inside the 3RU 2.4/3.4GHz transverter enclosure.
Above: Under the hood! A DEMI 4-way Splitter/Amp/Filter, and a Futurlec DC-DC converter board inside
The Futurlec dual DC … Read more...
This is a small and convenient microwave signal generator, for use in the shack or out in the field as a check source.
It is based upon the popular VK3XDK PLL Synthesizer board.
The antenna is a WA5VJB log periodic, as described here.
Main design goals included;
Well, I finally got a chance to have a play with my new “ZL PLL” board from Wayne, ZL2BKC.
First thing to do was organise a programming lead.
Being curious, I initially tried using a PICAXE AXE027 lead, but nope, no go.
The AXE027 lead is an “inverting ” type lead, so the logic levels are ass about.
As Wayne … Read more...
This video by Peter, VK4EA, covers the VK4 2013 Microwave Test & Tune day, held at the Redcliffe & Districts Radio Club rooms on April 21, 2013.
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A 3-part series covering the S/E Queensland Microwave Activity Day (MAD) on February 24, 2013.
VK4 Microwave Activity Day (MAD), Feb 24, 2013 – Part 1
VK4 Microwave Activity Day (MAD), Feb 24, 2013 – Part 2
VK4 Microwave Activity Day (MAD), Feb 24, 2013 – Part 3
This video takes a look at the S/E QLD Microwave Activity Day (MAD) on October 28, 2012.
See VK4ADC, VK4AQF, VK4EA, VK4GHZ, VK4KJJ, VK4OE, VK4UH, VK4ZQ operating on the microwave bands around South East Queensland.
This is a 2-part series covering the VK4 2012 Microwave Test & Tune day, held at the Redcliffe & Districts Radio Club rooms on September 16, 2012.
S/E QLD Microwave 2012 Tune Up Day – Part 1
S/E QLD Microwave 2012 Tune Up Day – Part 2
Join team members:
Adam, VK4GHZ
Alan, VK4WR
Graeme, VK4FI
Scott, VK4CZ
at their Summer Field Day station atop Mt Richmond, in Northen NSW.
Genuine OEM Belt Clip for Anytone AT-D878UV & AT-D868UV - 3 Pack
$21.00 AUD
Eltek Flatpack2 24/48V Touchscreen Controller Kit
$145.00 AUD
YK04 Remote Control Kit
$30.00 AUD
K3NG Universal Rotator Controller Kit
$109.00 AUD
K3NG Universal Remote i2c Starter Kit
$20.00 AUD
