merlin3rd
Newbie
I want to use my Tytera MD-380 for mobile use. Is there a UHF amp that will work with digital?
Thank you.
Merlin K3MEJ
Thank you.
Merlin K3MEJ
Yes there are, but seeing as the OP has a MD-380, he probably won't want this amp.Not really. Due to the nature of how TDMA and other digital modes work there are no amps.
Isn't that more for use as a repeater's final? Although as I recall, the repeater doesn't actually do any switching, fast or otherwise, since it's always running in full-duplex mode. :wink:Yes there are, but seeing as the OP has a MD-380, he probably won't want this amp.
DMR 100 Watt Power Amplifier - DMR Radio
Isn't that more for use as a repeater's final? Although as I recall, the repeater doesn't actually do any switching, fast or otherwise, since it's always running in full-duplex mode. :wink:
So... sounds like this might just work on simplex? If I manually key the amplifier and am operating simplex then (in theory) it should not matter that the amp is taking up both time slots... right? de KL1IF
No. Does not work that way. The transmitter power output rises and falls extremely fast. I doubt a normal FM amplifier would be happy, manually keyed or not.
Ok. Well, there are other ways to get more range... switching to horizontal and stacking some UHF loops on the car... These are part of my "bug-out" plan and I just want to keep with the same radios so the encryption function works transparently. Higher power would be nice but not needed I guess.
If you want to improve range with or with out using an amplifier, going to SSB will be the real range improver, or using a low SNR digital mode like WISPER or JT65. Simply going horizontal polarization will not improve your range much while staying with a FM transmission.
To add an update. This is for simplex use because it's horizontal not vertically polarized like most repeaters. I stacked 4 of the VHF M2 antennas with their phasing harness as high as I could. And put one M2 loop on my vehicles. Horizontal is NOT just for SSB work. You can get and extra 2.5 db "ground effect" (google it) gain just by switching polarities. For me. I can get about 15-20 mile coverage from base to car reliable without a repeater with md380s (VHF). Sure, their a little harder to mount on a car but I just use an MFJ 5inch three magnet array with home brew 3/8x24 threat rod from lowes. The key is to get it exactly 1/4 wavelength above your vehicle. Paint it black and it's nearly visible. That's my two cents from 23 years in radio experimentation. KL1IF.So... sounds like this might just work on simplex? If I manually key the amplifier and am operating simplex then (in theory) it should not matter that the amp is taking up both time slots... right? de KL1IF
Yes there are, but seeing as the OP has a MD-380, he probably won't want this amp.
DMR 100 Watt Power Amplifier - DMR Radio
I don't think that "Digital Modular Radio" is the same "DMR" that the OP was asking about. Note that DMR is not on the list of modes for that amp, either.