Anusat 137.400 FM 23042009 14UTC FT-847 Disconne CA3SOC CE3RR Yaesu Satellite SAT CE3SOC
Modification of an Alinco DR-635 dual band radio (144/440Mgz) to expanded transmit capability (MARS/CAP) 137Mgz-175Mgz, 420Mgz-480Mgz range. Their are many other dual band radios with the same capabilities and more, this one is just one I stuck with as a simple, easy to use, no frills mobile radio. There are many other radio bands to use, this is a small slice I like to use because of its proximity to Fire/Law/EMS/Govt frequencies for monitoring. It’s close to FRS, MURS, and GMRS frequencies as well. Nothing wrong with our CB and longer wavelength cousins, antenna construction and size limitation gets a little challenging when you are trying to be discreet in those bands. Don’t want to spend the money either.
I hear ya, Its like they dont even know how to interpret their laws. I was told once every type 90 (commercial radio) is GMRS allowed, but the letter of the law will say its not. Though the technical specs meet GMRS specs. Clear as mud, Huh.
Almost the same procedure except the blue wire is located on the rear of the front panel display board. Got the info off the web from a reputable source, I dont have any experience with the DR 135. Will PM the exact modification procedure.
Can somebody tell me what is the transmit power for a GMRS frequency for ths alinco dr-635
around 35-40 watts
so what was the other MOD you did to the radio, and what exactly does it do?
I ask becasue I am a Radio User Possibly like you, but also Dabble in the Pirate Radio Stuff Once in a while..
And I was thinking of of getting that radio..
So do you got a Video for the Other MOD???
Thanks,
Alinco sells a card for APRS (gps tracker and digital data). I didnt want to use their gear, so I made an interface cable wired directly to the radio board to work off other APRS/digital devices with more capability other than alinco stuff. Very sloppy job on my part but it works, I really butchered the inside connections. No, I’m not gonna make a vid about it, it would be really boring, even for me. Figured there wont be any interest. Thanks for watching
I need your advice if this radio will help me to improve the reception and cover more distance in dense wooded land. What other equipment do I need other than the Alinco dr-635 radio? I am not an expert on radio communications. I need your advice. Do I need a tall antenna, power source? What other equipment is required to cover more distance and to improve reception?
Thanks
I own three garmin rhino 530Hcx GMRS 5watt, I used them on hunting trips. I have a FCC licence to operate them. The issue is that they do not work good in covered-dense wooded land. I am trying to build a repeater with an Alinco dr-635t.
I need your advice if this radio will help me to improve the reception and cover more distance in dense wooded land. What other equipment do I need other than the Alinco dr-635 radio? I am not an expert on radio communications. I need your advice. Do I need a tall antenna, power source? What other equipment is required to cover more distance and to improve reception?
The DR635 and other mobiles have a function called Crossband repeat, beaning it will repeat vhf to uhf and viceversa. you would have to get dualband radios to have sort of a repeater system. Alsoyour Rhino radios will not be compatible because the filters on the alinco is tuned for ham freqs not GMRS. Veh to Veh, you could have more coverage, but when you go on foot, you will lose range. You’re talking big money for a repeater.
Though another option is to home brew a repeater using hand helds. but then again it required some money and experience to build one. No easy answer, or task. In the forest service they use human repeaters, One guy on top of a hill served as a repeater, relaying messages from the guys below. But that could not be too much fun, unless he doubles as a spotter.
Could you possibly e-mail me and tell me what kind of service monitor you are using ? Great video ! Gets right to the point ! Thank you . Urmas KC7ISC hermy222@live.com
The one on this vid is an IFR COM-120, and we currently use an Aeroflex 3500A for the field. I definitely do not own this equipment, belongs to the outfit I work for. Thanks for watching.
Just a quick Question,,,Would the RF output finals handle operating on the 477Mhz band?
I dont know for sure, when I checked the power on that freq, it was about 4 watts lower than the rest of the UHF band. Might be on the fringe there.
Yeah ok,,,Thanks for the reply,,,The only reason i ask is i own a couple of Icom IC-208H radios,,,They are also very easy to extend the TX RX range,,,BUT,,The stock finals on the UHF side are only designed for 400-470Mhz,,,Operating at 45watts on 477Mhz kills them Although i have been using the same radio at 15 watts for some years,,,It only killed the high power section of the finals,,,They are replaceable with the SAU-93 finals, Oops,, rambling again, sorry
Thanks for posting the video. i am interested in this unit and am looking at specifically the GMRS side of things. Does this unit have the capability of transmitting in GMRS? Interested in setting an ammo can comm box for emergencies.
Technically and physically, yes. Legally, no.. Thanks for subbing too, take care.
Very new to the entire comm side of things, if I have a license and I am limited to 50 Watts. How come its not legal to transmit?
FCC federal law. the radio in the vid is an amateur radio FCC part 97 rules. a GMRS radio is specific to another service, FCC part 95 radio. the rules are as clear as the tax code, clear as mud.
Forgive my thickheadedness, but you seem like the reputable source to trust on these things. So if I were to obtain a tech Ham license so that my existing GMRS license would compliment it. Would that make operating this device legal? Or is it the fact that the device operates on both FCC parts? Mind you this is for SHTF/Emergency situations.
the hole thing is so complacated with thare being diferent frequencys some you can use some you cant some requers a certin licence some do not. from what can figure out you are damd if you do and damd if you dount. a nother worrds if you read and new all the laws and whats prohibited and you have the max licence you can bet thare is still something thay can get you on. the point is when thay started to take over the fcc wanted it to beo so hard to learn that most people can be fined