gre scanners
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POLICE SCANNER-MOTOROLA MALE TO SO239 UHF FEMALE ADAPTER (5) $17.99 |
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UNIDEN MR8100 POLICE SCANNER OWNERS MANUAL AND COMPUTER PROGRAMMING GUIDE–COPY $16.99 |
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NEW UNIDEN BC72XLT NASCAR 100-Channel Compact Handheld Police Radio Scanner $68.99 |
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Uniden BC92XLT 200-Channel Police/Fire/Weather/NASCAR Handheld Scanner $75.00 |
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Vintage Police Scanner Crystal 450 – 154.9400 MHZ 10.7 iF BOMAR $3.98 |
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Vintage Police Scanner Crystal 859 – 151.4000 MHZ 10.7 iF MRH-1 $3.98 |
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POLICE SCANNER ANTENNA TUNED 800-900 MHZ PRO DIGITAL SCANNER UPGRADE $14.99 |
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RADIO SHACK PRO-528 TRIPLE TRUNKING 1000 CHANNELS HANDHELD SCANNER POLICE FIRE $71.00 |
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Vintage Police Scanner Crystal 558 – 142.9500 MHZ 10.7 iF P77 $3.98 |
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Vintage Police Scanner Crystal 559 – 44.6400 MHZ 10.8 iF CCI $3.98 |
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UNIDEN BEARCAT BC200XLT POLICE SCANNER $31.95 |
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Uniden BCT7 Beartracker Base Mobile Warning Police Fire CB WX AIR 800mhz Scanner $51.00 |
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Vintage Police Scanner Crystal 1581 – 168.6250 MHZ 10.7 iF ALAN $3.98 |
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Vintage Police Scanner Crystal 794 – 154.1300 MHZ 10.8 iF MCS-2 $3.98 |
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UNIDEN Bearcat BC-72XLT 100-Channel Handheld Scanner Police w/ Close Call RF $76.99 |
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Vintage Police Scanner Crystal 729 – 154.8900 MHZ 10.7 iF TMR $3.98 |
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Vintage Police Scanner Crystal 312 – 152.5400 MHZ 10.7 iF Crystek $3.98 |
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Vintage Police Scanner Crystal 2292 – 45.8400 MHZ 10.8 iF MRL-2 (2509) $3.98 |
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UNIDEN BC340CRS 100 channels Police/Public Safety Radio Scanner w/ Atomic Clock $83.60 |
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Vintage Police Scanner Crystal 731 – 154.9800 MHZ 10.7 iF MRH-1 $3.98 |
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Police Scanner Crystal – 024 – 155.8500 MHZ – 10.8 iF – VHF High Band $4.00 |
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Police Scanner Crystal – 025 – 39.4200 MHZ – 10.7 iF – VHF Low Band $4.00 |
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Vintage Police Scanner Crystal 313 – 45.4600 MHZ 10.7 iF MRL-1 $3.98 |
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Vintage Police Scanner Crystal 1664 – 482.2500 MHZ 10.7 iF P-5 SD $3.98 |
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Vintage Police Scanner Crystal 1287 – 44.9800 MHZ 10.7 iF MRL-1 (2971) $3.98 |
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Vintage Police Scanner Crystal 314 – 465.0750 MHZ 10.7 iF CCO $3.98 |
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Police Scanner Crystal – 2435 – 154.935 MHZ – 10.7 iF – VHF High Band $4.00 |
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Uniden Bearcat 500 Channel TrunkTracker III Police Scanner BC780XLT/No Reserve $102.50 |
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Vintage Police Scanner Crystal 315 – 173.3250 MHZ 10.7 iF MCS-1 $3.98 |
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Vintage Police Scanner Crystal 1126 – 470.9120 MHZ 10.8 iF JK-5 $3.98 |
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Uniden BC-72XLT Nascar Handheld Race Police Scanner 100-Channel CloseCall RF New $88.95 |
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Vintage Police Scanner Crystal 2330 – 155.0400 MHZ 10.7 iF Pro7 $3.98 |
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Vintage Police Scanner Crystal 2332 – 156.3500 MHZ 10.7 iF TMR $3.98 |
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Bearcat Police Scanner – Model BC-101 with manual & codes $24.95 |
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Police Scanner Crystal – 098 – 162.5500 MHZ – 10.7 iF – VHF High Band $4.00 |
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Vintage Police Scanner Crystal 2004 – 48.2400 MHZ 10.7 iF MRL-13 $3.98 |
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Vintage Police Scanner Crystal 1263 – 45.1000 MHZ 10.7 iF MRL-1 $3.98 |
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UNIDEN Bearcat BC72XLT 100 Channel Handheld Police Scanner w/ RF Technology $76.99 |
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EEUC Uniden Bearcat BC340CRS Police Scanner Radio Base 100-Channel $79.99 |
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UNIDEN Bearcat BC72XLT Handheld Scanner Police Nascar 100 Channel Safety $76.00 |
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Radio Shack Race Police Scanner 200 Channel Memory Pro-89 800mhz w/ headphones $79.95 |
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Vintage Police Scanner Crystal 2244 – 155.4750 MHZ 10.8 iF A-135 $3.98 |
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Vintage Police Scanner Crystal 2218 – 152.3000 MHZ 10.7 iF P77-AH $3.98 |
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Vinatge Police Scanner Crystal 1630 – 42.1000 MHZ 10.8 iF ECS-2 $3.98 |
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Radio Shack Pro-2096 Police Fire Scanner Radio $153.51 |
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BEAR CAT UNIDEN BCT-10 RADIO SCANNER POLICE BEAR TRACKER WORKS FREE SHIPPING $55.99 |
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Vintage Police Scanner Crystal 927 – 42.8800 MHZ 10.7 iF ALAN $3.98 |
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Vintage Police Scanner Crystal 2011 – 41.2000 MHZ 10.7 iF ALAN $3.98 |
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Vintage Police Scanner Crystal 2012 – 41.2500 MHZ 10.7 iF ALAN $3.98 |
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GRE America Police Scanner FIRE/EMS/Train/Weather Radio Base/Home Programmable!! $57.74 |
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Vintage Police Scanner Crystal 2014 – 33.3400 MHZ 10.8 iF MRL-2 $3.98 |
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Vintage Police Scanner Crystal 2017 – 33.3400 MHZ 10.7 iF MRL-1 $3.98 |
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THE NEW SNOOP STORM SCANNER ANTENNA FITS UNIDEN BEARCAT,Police Radio Fire, gre, $12.95 |
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THE NEW SNOOP STORM SCANNER ANTENNA FITS UNIDEN BEARCAT,Police Radio Fire, gre, $12.95 |
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Vintage Police Scanner Crystal 1098 – 42.7400 MHZ 10.8 iF BC 3/4 $3.98 |
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POLICE SCANNER ANTENNA ADAPTER TURN YOUR MOBILE INTO A WINDOW MOUNT BASE $12.99 |
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BNC POLICE SCANNER ANTENNA CENTERLOAD BNC TNC TUNE 800+MHZ TRANCIEVER ANTENNA $9.99 |
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POLICE SCANNER ANTENNA TUNED 800-900 MHZ PRO DIGITAL SCANNER UPGRADE $14.99 |
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RADIO SHACK PRO 164 POLICE SCANNER 1000 CHANNEL TRIPLE TRUNKING L@@K MINT $85.99 |
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Radio Shack Pro 2096 Digital Trunking SCANNER w/ software police fire ems radar $199.95 |
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Uniden BCT8 800MHz Police Radio Scanner w/ BearTracker & TrunkTracker III $167.99 |
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UNIDEN BC340CRS 100 channels Police/Public Safety Radio Scanner w/ Alarm Clock $83.60 |
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Trunking Police scanner $20.00 |
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UNIDEN Bearcat BC72XLT 100-Channel Handheld Police Scanner w/ 10 Banks $76.99 |
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Vintage Police Scanner Crystal 483 – 45.9400 MHZ 10.7 iF TMR $3.98 |
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Vintage Police Scanner Crystal 317 – 37.3800 MHZ 10.7 iF P-77 TD $3.98 |
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Vintage Police Scanner Crystal 1115 – 45.2200 MHZ 10.7 iF Bomar RG $3.98 |
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Vintage Police Scanner Crystal 453 – 460.3050 MHZ 10.7 iF Bomar RG $3.98 |
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Vintage Police Scanner Crystal 1321 – 45.2600 MHZ 10.8 iF MCS-2 (3105) $3.98 |
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Vintage Police Scanner Crystal 299 – 157.1000 MHZ 10.7 iF ALAN $3.98 |
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Police Scanner Crystal 030 – 42.2600 MHZ – 10.8 iF – VHF Low Band $4.00 |
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Vintage Police Scanner Crystal 239 – 45.2600 MHZ 10.8 iF MCS-2 (2954) $3.98 |
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Uniden Police Scanner $19.99 |
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Vintage Police Scanner Crystal 1407 – 155.6700 MHZ 10.7 iF MRH-6 $3.98 |
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Police Scanner Crystal – 2438 – 42.6800 MHZ – 10.7 iF – VHF Low Band $4.00 |
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Radio Shack PRO-96 Digital Trunking Scanner Police $177.50 |
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Vintage Police Scanner Crystal 734 – 42.7600 MHZ 10.8 iF MRL-2 $3.98 |
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Vintage Police Scanner Crystal 2048 – 154.2200 MHZ 10.7 iF SENTRY $3.98 |
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UNIDEN BEARCAT POLICE SCANNER MODEL BC140 **NONWORKING**REPAIR OR PARTS** $4.99 |
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Vintage Police Scanner Crystal 1301 – 162.5500 MHZ 10.7 iF MCS-1 $3.98 |
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Vintage Police Scanner Crystal 735 – 42.4200 MHZ 10.8 iF BC ALAN $3.98 |
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Vintage Police Scanner Crystal 319 – 45.6600 MHZ 10.7 iF P77-AL $3.98 |
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Vintage Police Scanner Crystal 1111 – 39.4200 MHZ 10.7 iF MRL-1 (3153) $3.98 |
I’m wanting to build a signal amplifier and need so help?
I’m wanting to build an amplifier that will work in freq range of 100MHz-1GHz, have a gain of 0-20db and be powered by a 9v battery. I’m pretty familiar with the individual components, ie. resistors, pots, caps, etc. But I don’t have the knowledge to be able to design a working circuit. Another feature I’m wanting it to have is when the amp is turned off the signal will just bypass the amp. So that I wont have to remove the amp to maintain signal when not in use. It’s to be used on a hand held scanner. Would there be anyone out there that would be willing to draw me a circuit so I can build such a device? I only know of one device on the market called the GRE Super Amplifier, but they are ridiculously over priced. I’ve bought 4 of them over the last 4 years and they only seem to last about a year before they just stop working. They still turn on but the moment you turn it on it blocks all the signal and I can’t for the life of me figure out what on the amp is failing on these things.
Your best resource for this type of project is the ARRL UHF/Microwave Experimenter’s Manual. You can find one at most of the major bookstores in their engineering and science sections. Also try Amazon.com
Although as mentioned by another responder here, GHz range project building requires some special attention, it is not beyond the scope of a hobbyist to do. 1GHz is a lot more forgiving than one may think.
You might also try the AARL Radio Amateur Handbook, another more generalized publication that also covers UHF for at least a few chapters.
Another tip, take a look at ebay in the industrial electronic components area. I have seen and purchased some very inexpensive amps in that frequency range their a few times. (less than $20).
Also, please let me know what sort of project you are using the amp for. I might be able to provide some further help. I do lots of design work in the 900MHz range, specifically for the RFID markets. Check out the websites below.
