-
You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
-
A Winner has been chosen for the 2026 July 4th Retevis RA89R Giveaway! Click Here to see who won!
Cobra 148 gtl rx/tx ok but hissing noise on background
- Thread starter manuelflo
- Start date
so nobody replied here to this one. ? ? ?
are you new to SSB mode?
go to ch. 38 LSB during the day, and are
you hearing the madness there?
test your receiver there.
some hiss is normal in SSB receive.
what version 148 radio do you have?
the tag on the back of radio.?
Red China, Free China, Flip, made?
are you new to SSB mode?
go to ch. 38 LSB during the day, and are
you hearing the madness there?
test your receiver there.
some hiss is normal in SSB receive.
what version 148 radio do you have?
the tag on the back of radio.?
Red China, Free China, Flip, made?
When I see the word "tone" I think a musical note, like from a flute or a guitar string. I think what you meant was a hiss, like the sound of compressed air coming from a leaky hose.
The "hiss" will always be louder on sideband modes USB and LSB, fainter on AM when the antenna is not connected. The difference is not so much when the antenna is connected.
73
- No one is chatting at the moment.
-
-
-
@ BJ radionut:Scheduled for Jul 4, 2026 Saturday Live Streams:
To celebrate the 250th birthday of our great nation. We are giving away not just one, but multiple antennas! The Grand prize is the CaHR-Tenna Hydra Antenna, along with several other antenna prizes that will be announced throughout the giveaway. Whether you're a new ham, portable operator, POTA activator, or an experienced HF operator, this is your chance to upgrade your station. Prizes Include: HRA Hydra Antenna (Grand Prize) Additional antennas from HRA More prizes may be added during the giveaway! -
-
