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VK4ZXI

Thursday, 22 December 2016. Building a MMDVM multi-digital mode repeater. Building a MMDVM multi-digital mode repeater. Very draft. Will write more as I go. As almost everything is from overseas, I have to wait two or three weeks before I can do much. How to do everything. Https:/ www.f5uii.net/en/installation-calibration-adjustment-tunning-mmdvm-mmdvmhost-raspberry-motorola-gm360/. Http:/ mmdvm.blogspot.com.au/p/packages.html- MMDVM and Duo Adrino. Http:/ dmr-marc.net/FAQ/radio-models.html. The mirrorin...

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VK4ZXI | vk4zxi.blogspot.com Reviews
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Thursday, 22 December 2016. Building a MMDVM multi-digital mode repeater. Building a MMDVM multi-digital mode repeater. Very draft. Will write more as I go. As almost everything is from overseas, I have to wait two or three weeks before I can do much. How to do everything. Https:/ www.f5uii.net/en/installation-calibration-adjustment-tunning-mmdvm-mmdvmhost-raspberry-motorola-gm360/. Http:/ mmdvm.blogspot.com.au/p/packages.html- MMDVM and Duo Adrino. Http:/ dmr-marc.net/FAQ/radio-models.html. The mirrorin...
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1 vk4zxi
2 introduction
3 mmdvm
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5 other bits needed
6 duplexer
7 hotspots diy
8 official dmr sites
9 https / brandmeister.network/
10 https / dmr marc.net/
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vk4zxi,introduction,mmdvm,radios,other bits needed,duplexer,hotspots diy,official dmr sites,https / brandmeister.network/,https / dmr marc.net/,looks useful,posted by,no comments,email this,blogthis,share to twitter,share to facebook,share to pinterest
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VK4ZXI | vk4zxi.blogspot.com Reviews

https://vk4zxi.blogspot.com

Thursday, 22 December 2016. Building a MMDVM multi-digital mode repeater. Building a MMDVM multi-digital mode repeater. Very draft. Will write more as I go. As almost everything is from overseas, I have to wait two or three weeks before I can do much. How to do everything. Https:/ www.f5uii.net/en/installation-calibration-adjustment-tunning-mmdvm-mmdvmhost-raspberry-motorola-gm360/. Http:/ mmdvm.blogspot.com.au/p/packages.html- MMDVM and Duo Adrino. Http:/ dmr-marc.net/FAQ/radio-models.html. The mirrorin...

INTERNAL PAGES

vk4zxi.blogspot.com vk4zxi.blogspot.com
1

VK4ZXI: April 2016

http://vk4zxi.blogspot.com/2016_04_01_archive.html

Friday, 15 April 2016. Airspy, Spectrumspy, noise source and UHF cavity filter characteristics; a low cost spectrum analyzer? Airspy, SpectrumSpy, noise source and UHF cavity filter characteristics; a low cost spectrum analyzer? A basic spectrum analyzer/tracking generator for less than $250? Yes Can it be used to do a demanding task like tuning a UHF cavity filter from a repeater? A low cost Zenar diode based noise source is available for about $20. It uses three Mini-Circuits ERA-5 wideband amplifi...

2

VK4ZXI: December 2016

http://vk4zxi.blogspot.com/2016_12_01_archive.html

Thursday, 22 December 2016. Building a MMDVM multi-digital mode repeater. Building a MMDVM multi-digital mode repeater- DRAFT 24/2/2017. Very draft. Will write more as I go. Everything has arrived and I am starting to put it together. Https:/ www.facebook.com/MMDVM/. Https:/ groups.yahoo.com/neo/groups/mmdvm. How to do everything. Interfacing the CDM 1250 to MMDVM board.pdf in Yahoo files. For 1.01 board and updated files. DMR-UTAH MMDVM XFCE Raspberry Pi Image *. By Chris Andrist, KC7WSU *. TTY MD-390 S...

3

VK4ZXI: October 2016

http://vk4zxi.blogspot.com/2016_10_01_archive.html

Sunday, 16 October 2016. Using notch filters for Rx and TX and extending the range of a notch duplexer. Using notch filters for Rx and TX and extending the range of a notch duplexer (Draft). I have a six cavity notch duplexer for 70 cm. At the original frequencies, outside the amateur band, the RX and TX notch responses are a mirror of the other, as notch filter responses are asymmetrical, compared to symetrical for band pass. The duplexer RX cans on the right, TX cans on the left. Dr Andrew (Drew) Wollin.

4

VK4ZXI: September 2016

http://vk4zxi.blogspot.com/2016_09_01_archive.html

Friday, 30 September 2016. Duplexer DVB-T TX filter: Low bandwidths. Duplexer DVB-T TX filter; Low bandwidths: 2 and 1 MHz. The duplexer DVB-T TX filter was adjusted to see if it would work at low bandwidths, specifically 2 and 1 MHz at 70 cm. It achieved this easily, but with a small increase in losses. The duplexer was original adjusted for a 7 MHz bandwidth with a spectrum analyser and tracking generator. I only moved the lower frequency notch, one side of the duplexer. Dr Andrew (Drew) Wollin. In my ...

5

VK4ZXI: March 2016

http://vk4zxi.blogspot.com/2016_03_01_archive.html

Saturday, 5 March 2016. 200W DATV power amplifier- 50V 20A power supply. 200W DATV power amplifier- 50V 20A power supply. I am builder a DATV power amplifier, about 200W maximum. The power supply is unusually powerful as the amplifiers are only bout 25 per cent efficient. Commissioning such a power supply is not simple. The power requirements are about 48V at 20A as the amplifiers are only about 25 percent with the ultra linear DVB-T. The next problem is testing the power supply. I bought four 12V he...

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VK4YEH Home

Welcome to the Website of. Tim Roberts : QTH Brisbane Australia. Roy Frettsome, G4WPW has kindly allowed me to mirror his excellent site. Australian SSTV Webcam Page.

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The Twisted Pair

The Twisted Pair is the Ham Radio location for VK4KYL and VK4ZD - a 20 year old dream come true.

vk4zq.wordpress.com vk4zq.wordpress.com

VK4ZQ | Amateur Radio with an Emphasis on Microwaves

Amateur Radio with an Emphasis on Microwaves. Field Days can be Fun. After enjoying a number of VHF UHF / Microwave field days in recent months, I decided it was about time I wrote a few words about the experience in the off chance that it may act as a catalyst for one or two of you to “give field days a go”! Arriving at a field day site. Much of the detail relating to specific pieces of equipment that I have used in the field day station can be found elsewhere on this Blog! C) was simple to transport,.

vk4zxi.blogspot.com vk4zxi.blogspot.com

VK4ZXI

Thursday, 22 December 2016. Building a MMDVM multi-digital mode repeater. Building a MMDVM multi-digital mode repeater. Very draft. Will write more as I go. As almost everything is from overseas, I have to wait two or three weeks before I can do much. How to do everything. Https:/ www.f5uii.net/en/installation-calibration-adjustment-tunning-mmdvm-mmdvmhost-raspberry-motorola-gm360/. Http:/ mmdvm.blogspot.com.au/p/packages.html- MMDVM and Duo Adrino. Http:/ dmr-marc.net/FAQ/radio-models.html. The mirrorin...

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VK4ZM VK4ZZ Mop and Og's Home on the Web

OG and MOP HOME http:/ vk4zz.customer.netspace.net.au/index.html. Radio Amateur APRS Packet. Central Highlands Yahoo Group. Wireless Institute of Australia. Mop and Og's Home. This not for profit website is hosted courtesy of Netspace Pty Ltd. P) (c) 1998, 2008 Gavin Reibelt VK4ZZ ogSOFT Software Support. Contents of this page can be used freely for non-pecuniary purposes. Hand crafted using XT-Gold 3.0 1word Text Editor. Free DHTML scripts provided by Dynamic Drive. Last updated 16th January 2006.

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Andy VK5AKH | Behind the Sticks of a HF Radio Since 2006

I have driven past this park over a hundred times with my frequent trips to and from the Riverland for work. Curiosity finally got the better of me so I decided to come in and activate the park. The park is a reserve for Wombats and is looked after by the Conservation Volunteers. Operating time …. Slides from Contesting Talk Presented to the Adelaide Hills Radio Society Radio Symposium – Sunday November 23 The video of the talk can be found here. Oceania DX Contest 2014. Portable Morialta CP 27 April 2014.

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APRS in Adelaide

Welcome to APRS in Adelaide. Fundamentally, APRS is a packet communications protocol for disseminating live data to everyone on a network in real time. Its most visual feature is the combination of packet radio with the Global Positioning System (GPS) satellite network, enabling radio amateurs to automatically display the positions of radio stations and other objects on maps on a PC. It provides maps and other data displays, for vehicle/personnel location and weather reporting in real time. Conventional ...