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Perfect Home Theatre finally: Nvidia Shield, PLEX, SiliconDust tuner

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Finally, a home theatre system that does everything and only one remote. I have been playing with home theatre and music for about 50 years and finally have a system that does everything I want without switching between multiple boxes and many remotes.

I can watch live TV, stream commercial services like Netflix, Prime or Stan, stream my own movie, TV show, music and photo content, watch catch up TV, such as ABC iview, SBS on demand and many others, and casting from IOS devices.

The system uses the TV/projector as an HDMI monitor and a theatre amplifier for sound making it easy to replicate across two systems, one in the lounge and the other in the sunroom. As such, both have the same interface, getting around the nightmare of different interfaces to remember.
The main hardware of the system: 4K Nvidia Shield TV Android media streamer.
https://www.nvidia.com/en-au/shield/

SiliconDust HDHomeRun Connect Duo/Quattro network free to air dual/quad TV tuner, DVB-T and most other standards.
ht…

CB UHF & VHF repeater

RF Technology Eclipse VHF repeater and UHF power amplifiers
Old, pre-2000, but still in use and in business. Expensive on eBay

Documentation is available from the RF Technology website and the Repeater Builder website
An old version of programming software at Repeater Builder. The new version on RF Technology won't download. Will email.

http://www.rftechnology.com.au/downloads/
http://www.repeater-builder.com/other-mfrs/other-mfrs-index.html






Motorola/Spectra MX800/MX1500
programmable narrow and wideband

P25 repeater may do analog narrow band.

http://www.spectraeng.com.au/mx800-specs.shtml#

http://www.spectraeng.com.au/mx800-docs.shtml software and documents.

http://wiki.w9cr.net/index.php/MX800   technical details, very good, manuals and MXtools software

http://www.hackersrussia.ru/Radio/m_motorola.php all radios software, seems old.

https://www.austech.info/showthread.php/70418-Spectra-Engineering-MX800-Base-Station-Repeater

Agilent 89640 RF VSA (dc to 2.7 GHz) Vector Signal Analyser

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Agilent 89640 RF VSA (dc to 2.7 GHz) VXI Vector Signal Analyser


89640 RF VSA (dc to 2.7 GHz) comprises:
E8491B IEEE-1394 PC Link to VXI, C-Size (FireWire)
89605B RF Input and Calibration Module
E1439A 95 MSa/s Digitizer with DSP, Memory and 70MHz IF input
E2730A 20-2700 MHz RF Tuner
E8408A 4-Slot VXI Mainframe











Vector Signal Analysis: Agilent 89600 VSA software and E4406A Vector Signal Analyser

Vector Signal Analysis: Agilent 89600 VSA software and E4406A Vector Signal Analyser

A very powerful test equipment resource is available with the older versions of the Agilent 89600 Vector Signal Analysis software combined with the E4406A Signal Analyser hardware for DATV and other amateur radio.





Version 12 of the Agilent 89600 software is the last that will work with the E4406A hardware. It, and earlier versions, can be accessed at: http://www.home.agilent.com/agilent/editorial.jspx?cc=TW&lc=cht&ckey=1303376&nid=-34704.626687.00&id=1303376

or
https://www.keysight.com/main/software.jspx?cc=AU&lc=eng&ckey=1303376&nid=-32400.350722.02&id=1303376

The last version of the 89600 software that will work with the



Registry edits for version 10 to 12 to work with E4406A
https://community.keysight.com/thread/5127


For 89601B versions
https://www.keysight.com/main/software.jspx?cc=AU&lc=eng&nid=-32806.0.02&id=2013472&pageMode=PV

Firmware updates E44…

Variable-length phasing cables for tuning repeater duplexers: Part 2, Using the cable

Variable-length phasing cables for tuning repeater duplexers: Part 2, Using the cable (draft) Introduction In Part 1, a variable-length phasing cable for use in determining duplexer cable lengths, using M/F SMA connectors to vary the length is discussed.

In Part 2, this post, I will cover the use of the variable-length phasing cable in more detail.

say more??
The basic process The basic process of using a variable-length phasing cable to tune a six cavity duplexer:

1/ Tune each cavity to frequency.

2/ Connect the three cavities with two same length adjustable phasing cables of approximately the right length

3/ Using a spectrum analyser and tracking generator or a vector network analyser (VNA), take out or insert SMA connectors in both cables until the desired response is achieved.

4/ Using a Tee connector between the ports of the instrument, measure the resonate frequency of one of the correct length variable cables as a quarter wave stub.

5/ Cut a length of cable a little longer tha…

Variable-length phasing cables for tuning repeater duplexers: Part 1, Construction of the cable

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Variable-length phasing cables for tuning repeater duplexers: Part 1, Construction of the cable Introduction A variable-length phasing cable for use in determining duplexer cable lengths, using M/F SMA connectors to vary the length is proposed. It is a cheaper alternative to a set of phasing cables with a 10mm (5mm?) length increment.

This post describes the concept and how it can be replicated. A simple idea, but some frustration in execution. The basic process of using the variable-length cables is outlined.

The next post will cover the use of the variable length cables and include screenshots from instruments and photos.

The problem: determining cable lengths for inter-connecting duplexer cavities Determining cable lengths for inter-connecting duplexer cavities is a perennial topic. Notionally, they are a quarter wavelength or odd multiple, allowing for coax velocity factor, but in practice that is a starting point.

My understanding is that commercially, a set of incremental lengt…

3D printing or fabricated UHF filters

3D printing or fabricated UHF filters


Not crazy idea, being done with antennas. In Jan 2019 QST. Silver conductive paint.

Should work for filters.

Dimensional stability important with some narrow filters, less so with wideband filters.

https://antennatestlab.com/3dprinting


https://all3dp.com/1/creality-ender-3-3d-printer-review/







Settings
https://www.youtube.com/watch?v=umulfK775i0


https://ultimaker.com/en/products/ultimaker-cura-software


https://ultimaker.com/en/resources/50296-which-material-should-i-use


Silver coating/paint MG Chemicals Amazon.com
https://www.mektronics.com.au/mg-chemicals-super-shieldtm-silver-coated-copper-conductive-coating-ul-recognized-340g.html

Fabricated

Construct with soldered copper then coat with silver paint.


Copper and silver plating
https://bryancera.blogspot.com/2014/09/copper-electroplatingforming-3d-prints.html
https://www.riogrande.com/category/tools-and-equipment/plating
https://janekits.com.au/products/copper-mix-inc-cumac-4-ltrs/
http://www.vite…