1. AES-256-Encryption

    Antenna question.

    I have 2 mobile radios UHF/VHF. One DMR one analog. I need both on the antenna but only the VHF one is. Is the best way to 2 diamond X50 antennas? I currently use an old TV antenna that has UHF VHF. But I would love some recommendations THANKS! XPR4550 / CDM1550-LS+
  2. AL5J

    Best VHF portable (handheld) transceivers Aviation & Marine that use alkaline batteries

    QST Looking for firsthand experience/recommendations for VHF Aviation & Marine HTs that use alkaline (AA ?) batteries. Back up radios. One radio that will be used in support of fire suppression air to ground. One radio will be used on inland lakes for search & rescue/EMS response. Thanks. 73...
  3. J

    Exploring Continuous Four Frequency Modulation (C4FM) and Linear Simulcast Modulation (LSM) in VHF Conventional Simulcast Systems

    Hello, I represent a small public safety communications agency situated in central Washington, on the east side of the Cascade Range. Currently, we are in the process of transitioning to the P25 standard. Our focus has turned toward understanding the implications of Continuous Four Frequency...
  4. G

    Trans-Canada highway - from ocean to ocean..- CB AM channels on the highway, VHF / FM / SSB channels

    Hey, I have a similar topic for Quebec, but trying to have one general topic for the Trans-Canada Highway CB radio channels, and ..maybe..even the VHF channels. ...so for Quebec highway roads, mostly it's very straight forward, the most popular CB AM channel on the highway is Channel 10, you...
  5. G

    VHF and more..SSB - channels on gravel roads/highways in Quebec

    Hey, I have a question about VHF (136-174 MHz) radio channels in Quebec I do have VHF handheld and using it mainly Alberta and some BC, on the gravel roads in the areas of oil and gas drilling sites. The handheld is programmed with the official channels for Alberta and BC, and basically I have...
  6. ***SOLD***Icom IC-R8600 Communications Receiver

    ***SOLD***Icom IC-R8600 Communications Receiver

    Selling it to fund my next ham radio purchase. Radio is in excellent working conditions, nothing scratched, rusted or burned out. Radio comes with DC cables and AC adapter. Please note the condition of the AC adapter cable. When I bought it, the previous owner had it terminated in such a way...
  7. murrayustud

    Motorola xts5000 vhf won’t transmit pl

    I have a Motorola XTS5000 vhf radio that’s programmed for ham radio but it won’t transmit the pl for my local repeater even though I have everything set up correctly in the software. I’ve tried everything but it transmits on the correct input to the repeater but no pl.
  8. K

    Proper battery for a TK-2160 that’s appropriate for the KSC-30 charger

    What battery do I wanna use for my TK-2160 radios to work in my KSC-30 charger.? The KNB-57L batteries I’ve got from Amazon dont charge in there. Do I need a special charger for the 57L batteries
  9. P

    Business radio power output question

    I don't know if this question has already been asked or not but please notify me if it has and link me to the original. To simplify: Why does VHF use 5 watts while UHF uses 4? Full Explanation: I want to know; why are VHF radios set at 5 watts while UHF is set at 4? Since UHF has a shorter...
  10. Xiegu GNR1 Digital Noise Filter, Noise Reduction. DSP for Ham HF,VHF, Shortwave

    Xiegu GNR1 Digital Noise Filter, Noise Reduction. DSP for Ham HF,VHF, Shortwave

    Used unit in nice condition with very low usage. Description: The Xiegu GNR1 digital audio noise filter, DSP audio device. Integrating digital noise reduction and digital filtering. It can be widely used in the external audio processing of all types of analog voice, CW wireless receiving...
  11. 86WSPSSP

    GE Mastr C800

    I am currently restoring a 1986 Washington State Patrol car and need help finding a GE radio control head. Specifically I’m looking for three of the attached C800 control heads. I’m hoping someone can help me connect with someone who has them for sale??
  12. I

    CB connector to NMO mount?

    One of our departments bought some new Mac roll off trucks that comes pre-wired for a CB. Is anyone aware of an adapter to convert the CB antenna mount to an NMO for our commercial radios? There is not enough slack in the coax to solder on an NMO, and I'm looking for a simpler solution that...
  13. H

    Marine VHF Programing

    Is it possible to program a Motorola radio to convert to a Marine VHF???
  14. PMJ2kx

    Utah & Juab County Two-Tones Added to the Wiki

    Hi folks, I realize in 2023 that fire tone-out (FTO) may not be a thing where you live, but it's still alive and well in Utah and Juab counties. Whether you're living nearby or just visiting, I wanted to add this info to their respective wiki pages in case you still use that feature on your...
  15. scanthewaves

    Ambulance EMS frequencies in Kleberg County?

    I see EMS ambulances on the way to Spohn Kingsville.almost daily, but I can't find any EMS to hospital frequencies in the RR database, I monitored VHF EMS to hospital freqs but nothing, haven't tried the UHF frequencies, Also I see that Sensible Ambulance seems to be the main company in the...
  16. Motorola Xts1500 radios for sale!

    Motorola Xts1500 radios for sale!

    I have several Xts1500 radios in vhf, uhf, and 900 mhz all P25 equipped with original tags and upgraded flashcodes. Used and in good condition Tested and in working order. Radio and antenna only. $150.00 each.


    The only Radio available is UHF. ****VHF NOT AVAILABLE*** (1) Motorola XPR6550 UHF Model AAH55TDH9LA1AN The Battery holds a charge and I will include a impres charger. Asking $175.00 or B/O. Paypal accepted preferred. If this ad is up then its still available.
  18. Sheepdog777

    IF: Low Frequency (LF) RF Travels Through the Earth/Water AND: Heat = Infrared (IR) (300 GHz - 400 THz) The Same... THEN: Why Not HF/MF/VHF/UHF/SHF ?

    Hello Hams and Radio Enthusiasts, So, upon my ongoing research regarding Underground Buried Earth Antennas (UNDERGROUND BURIED EARTH ANTENNAS & https://forums.qrz.com/index.php?threads/underground-buried-earth-antennas.856927/), I have received many conflicting responses. But, as with so many...
  19. Sheepdog777


    Hello Ham and Radio Enthusiasts, This topic seems to have been a burr in the saddle of many radio professionals over the years. We use underground buried antennas in the military all the time. Depending on the mission, daily. In the Air Force we even have entire career fields which install...
  20. Sheepdog777


    Hello Fellow Hams and Radio Enthusiasts, Hope everyone is doing well and enjoying the approaching Spring. Hopefully, this will be one of the last cold days for Missouri this year… Let’s See What Happens. I know there is eleventy thousand Prefabricated Dual Band VHF/UHF Antennas out there, but...