Radio Receiver

AR5000

modes (AM, FM, USB, LSB, and CW), five VFOs, and 1000 memory channels within 10 banks of 100 channels.

http://www.mwcircle.org/res-receiver-aor5000.htm

http://wiki.radioreference.com/index.php/AR5000

base station receiver/scanner

All functions on the AR5000 are RS232 controllable

SDU & digital decoder

sdu5500

need a PHD to master them all and be willing to spend a bunch (1k & up) even on the used market.

if operated via PC the ergonomics will not be an issue.

IMD/BDR problems

can refit Collins mechanical filters to the unit for even better selectivity performance - which apparently makes quite an improvement.

CTCSS board (which I don't have) and a audio-inversion de-scrambler board. descrambler - it only has 8 discrete settings, and a PC sound card based software descrambler works better.

The 5000 plus model has AFC, Noise blanker & sync-AM reception

has front end bandpass filters that are switched in & out with relays, so if you scan between VHF & UHF, you will get a relay click.

BEST do-it-all scanner receiver for VHF & UHF, and its pretty darn good on HF too. The nearest direct competition, the Icom 8500, concentrates more on HF, with bonus VHF & UHF reception.

http://www.eham.net/reviews/detail/473

The frequency stability when new is brilliant - I measured (indicated) less than 10hz drift listening to WWV for two hours. Now that my unit is some 5 years old, that's more like 100hz drift over two hours.

HF antenna for shortwave & utility listening

For VHF & above, I had a discone at 12 metres up being fed by LDF4-50 heliax cable.

IC-R9000 level

Building A Video Converter

Example: in our 7MHz wide VHF TV broadcast at 200 or so MHz, blasting out about 250kW ERP line-of-sight, 20km from my shack, I could hear a 10mW wireless mike that was jammed between the video & audio carrier, and that mike was 5km distant!
Another: I could hear (just!) a microwave link that is on the same mountain as the TV transmitter at 1.5GHz - and the thing is pointed away from me!
Another: A VHF taxi data transmitter 5km distant, blasting out 300 watts ERP, and if on the narrow setting, I don't even know it's there by 25kHz away from it's frequency.
And yet another: a friend has a NRD535D and a AR5000. He says that if it wasn't for the DSP on the JRC NRD535D, the two would be the equal of one another on HF, and he is using the standard IF filters like I am.

Not every scanner has a built-in buffered IF output connector on them. The AOR AR5000, Icom R7000, R7100 and R9000 have these outputs already wired, and the AOR AR3000 series can have this output installed fairly easily as a do-it-yourself modification.

http://scanningtasmania.org/vidconvert.htm

Measurements can be done with the following electronic devices:

Hewlett & Packard Spectrum Analyzer 3585 A

Roedre & Schwarts VLF-HF Receiver EK 070

Marconi Spectrum Analyzer

Dynamics SD 375 Spectrum Analyzer

Nicolets Radio Frequency Analyzer Computer

See Now

www.think-aboutit.com/Brain Transmitters.htm

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Radio Receiver

AR5000