VK5 Local Beacons

If your interested in testing the at accuracy of you your transceiver on 6/2/70/23/SHF there are beacons setup in around Mt Lofty (VK5VF) and the Elizabeth Water Tower (VK5RLZ) which you can listen to and they are on the following frequencies

VK5VF
6m = 53.3200 GPS locked
2m = 144.4500 Crystal locked
700mm = 432.4500 GPS locked

VK5RLZ
230mm = 1296.4520
SHF = 2403.4520
SHF = 3400.4520 proposed
SHF = 5760.4520 proposed
SHF = 10368.4520 proposed
SHF = 24048.4520 proposed

The GPS locked beacons accuracy will be in the order of 1000th of a hertz

Softrock RX Ensemble II HF Receiver build and Quisk Config

Yesterday my Softrock RX Ensemble II HF Receiver arrived from Five Dash Inc. in the US within ten days and was very well packed. Any way like most grown men with a new toy I descided to take the day out and build it, the took me about 15 hours in total. The guide by WB5RVZ is comprehensive and easy enough to follow in a half dozen so steps. I also have a nice box for the Ensemble II RX coming from the KM5H store and it will make it to be a nice looking package.

Here are some pics from the build


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SeaSDR_40 and Quisk

My SeaSDR_40 kit arrived from Italy. Last night I finished off building the kit together, the is rather easy to put together and the only real thing to watch out for is the toriod with the primary and secondary windings on it, to soldering it in correctly.

I also got the SeaSDR_40 working with Quisk by only having to make a couple minor alterations to the ~/.quisk_conf.py file.

near the top of the file I changed the hardware import

import quisk_hardware_model as quisk_hardware

to

import quisk_hardware_fixed as quisk_hardware

This will allow you to have frequency shown in Quisk based on the VFO of the SeaSDR_40.

To alter the VFO to that of the SeaSDR_40 change

fixed_vfo_freq = 7056000

to

fixed_vfo_freq = 7080500

All that is left for me to do is buy a metal box to mount the board into with some socket and connectors.

ENE Technology, Inc. SD card reader (UB6250)

This is how I got the ENE UB6250 card reader working under Debian testing one my Acer Aspire One D255E

lsusb:


Bus 001 Device 005: ID 0cf2:6250 ENE Technology, Inc. SD card reader (UB6250)

This card reader uses the ums-eneub6250 module and needs firmware to operate correctly which is currently not included in the Debian firmware-linux or firmware-linux-nonfree packages.

The way I have gotten around the problem at the moment is to downloaded the Ubuntu linux-firmware package and extracted the deb package to copy the directory ene-ub6250 from the extracted directory /lib/firmware/ to /lib/firmware/ on my working system as I not wanted to install 40 odd megabyte of other firmware I not needed.

After moving the files over run the following and all should be ready to use
# depmod -ae
# update-initramfs -u

Reference:
http://forum.dug.net.pl/viewtopic.php?id=20461&p=1

[Part 3] ALSA Speech Compression and FT-857D

This is an update of my previous post

As testing goes on, the .asoundrc file is getting more complexed in its setup. This is where we are up to now, we have 2 profiles going for ‘local’ and ‘DX’ and we select between the profiles by running in terminal

Local:

$ arecord -B 12000 -D local_eq_ -r 44100 -f S16_LE | aplay -B 12000 -D ladcomp

DX:

$ arecord -B 12000 -D dx_eq_ -r 44100 -f S16_LE | aplay -B 12000 -D ladcomp

And now for the dreaded .asoundrc file.
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[EVENTS] AHARS Hamfest Sunday Nov 4th

Adelaide Hills Amateur Radio Society Inc.
When: 4th Nov. 2012, Entry from 9am, entry to sale hall from 9.30. $5 entry includes 2 raffle tickets
Where: Goodwood Community Centre 32-34 Rosa St Goodwood.
See AHARS for full details of vendors present and the generous door prizes offered. NERC and ALARA will provide refreshments.

Map:

[Part 2] ALSA Speech Compression and FT-857D

This is just an update from my older post. I have built an isolation box to use between the computer and the FT-857D which at the moment only consists of two 3K 1:1 audio transformers and 500K trimpot to not over load the radios audio input on the data port. I have still got to add the optocoupler into the box so can get the computer to control the PTT via the data port too.

At the moment there has been no noticeable different in the audio quality with the isolation transformers inline, and the compressed audio still sounds good :-)

I reject your reality and substitute my own

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