Thought I'd reply to this very old post since I just saw it. I'm the one who created the mod you mention. The reason there is no "new/more available way" to get these radios to work on the ham bands is because the microprocessor has internal ROM that will not work onamateur band frequencie...

Thanks, Ron. I ended up using a Maxtrac and a GTX in conbination for the repeater... been having way too much trouble getting error codes to clear on the Spectras I have, so I went an "easier" route. But thanks for keeping me in mind! Now if those MSF5000's would just come available.........

any one do the mod to this radio on here I have done this mod on many MTX900's (of course I developed the mod - the mots6 !). Works great. These are powerful robust radios that really work quite well and they can be purchased really cheap. That said, an MTX9000 is a smaller more compact radio that ...

I have been using two Spectras as a repeater for about 8 years. I just recently took the system down due to lack of use and my getting tired of paying $100/month for rack space. Anyway, the Spectra make VERY nice receivers by removing the front-end cavity filters and either replacing them with a cer...

I built an internet link based on the speakeasy software about 6 years ago. I modified the software so it responded to PTT input via the printer port and put out a COR signal as well. This way I could connect the computer to my repeater controller as if it were just another radio. As far as security...

What is a good source for this 900 stuff? I really want to try to stay away from eBay... I hear that 25 MHz split is better for 900 MHz. Here in Michigan, the bandplan calls for 12 MHz split. I'm sure I could just use a 25 MHz split anyway, it's not like anyone in the state uses 33cm right now, any...

I posted this before but somehow it didn't appear. Anyhow, When I started on 900 in '95 I used a converted 900mhz Micor repeater and Spectra for the mobiles. Later we started using MTX900 HT's with my MOTS6 mod. We still use those today although I've replaced the Micor with a Spectra based repeater ...

On the Spectra the LED only indicates squelch has been broken not CTCSS or DPL. If the mtx is anything like the spectra the audio PA has an enable line which is essentially COS (code/tone decode AND squelch). This is pin 10 on the audio PA module on the spectra.

Ron Curry
ke6wed

I am sure your information will be appreciated. What took you so long to find Batlabs? - Just kidding - we KNOW why - spending all that time with your Canon D30! Does the WED in your call mean you shoot weddings? 73 Actually, I just tried the Spectra RSS mod the guys published here on BatLabs and i...

Full lock TX/RX from 902-928? Can you detail your procedure... just painting the VCO I was having VCO unlock when I did a test unit. Bat I have developed a mod for the spectra's that allows full VCO lock across the band. As well you can get good sensitivity (around .22uv@12db SINAD) by modifying th...