800Mhz Public Safety & 900Mhz ham on one radio... Possib

This forum is for the discussions targeted at converting various models of Motorola equipment to operate in the 900MHz Amateur Band.

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nmfire10
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800Mhz Public Safety & 900Mhz ham on one radio... Possib

Post by nmfire10 »

I know this is probably a major long shot but I figured if it is possible, someone here would know. Is there a such thing as a radio that will function properly (with or without modification) on both the 800Mhz conventional public safety channels and 900Mhz ham? What I want (however far fetched) is a radio to use on a 900Mhz ham repeater and monitor a few of the 800Mhz fire channels and I-Tac.

Is this possible or just not even worth concidering??
"I'll eat you like a plate of bacon and eggs in the morning. "
- Some loser on rr.com

eBay at it's finest:
Me: "What exactly is a 900Mhz UHF CB?"
Them: "A very nice CB at 900Mhz speed!"

:-?
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Jim2121
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I never tried it?

Post by Jim2121 »

I never tried it..but I've hexed the rss on some MTX9000 ..but I only used it for tx & rx on ham repeaters btw 902-927M..never thought about anything to listen too on 800Mhz... besides before the law passed in the 1994? where the cell band bacame blocked to scanners, ect.. I bought a few "black boxes" from "Grove enterprises" NC..that Bob Grove sold for scanning stright thru 800 to 900+..
maybe someone else has a "to the point answer" jim
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Jim2121
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black box

Post by Jim2121 »

whoever pm'ed me...re: the black box as stated above is the GRC Super Converter II (goes btw. the scanner bnc & & antenna) it works! I'll try to find the schematic. its someplace, its simple, I made a move from Tempe AZ. to Prescott, AZ so only 48 more boxes to open!!! jim
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Post by mike m »

Hey Jim have you tried the Prescott 900 rptr yet ?

927.3875 151.4 HZ PL. Up on P-Mountain about 800 watts or more ERP.

getting back to the original post, I have modified the VCO's and front ends of several GE 800MHz MPD HT's and hamflashed and modified several 900MHz GE MPA HT's and was only able to get 897 to 930 Receive on the MPD's and barely 902 to 933 on the MPA's in RX.

Haven't tried My Maxtrac But I doubt it would do even the high 880's and 902-928 without some major charge pump changes in the VCO.


Mike
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Jim2121
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no time !!!!

Post by Jim2121 »

Hi Mike! I've only been here a year this month..Haven't gotton around to setting up a ham shack yet. I've hit N9CZV's 900 rptrs. in the Show Low area? & in the valley, with a GTX mobil as I was going down #87...I took that rig out for now, & put in a FT-90 for a while.. thanks for the tip on the 900 freq!... I only have time to talk when mobile.. Dave has an interesting site: http://www.n9czv.com/ and alot of good repeaters! c u later. Jim
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