What is oscar subband

What comes through every time is that dx only happens when operators at each end align for the principal factors: frequency, time, mode and to a lesser extent, antenna directions. Random dx is extremely rare. Propagation is the one thing the operator cannot control, but without the other factors aligning, the best tropo conditions are wasted. Seen several more spots in the last day for Band plans have many advantages, mainly seen in the number of contacts in the log and the distances achieved.

Of course you have to be willing to copy voices in the presence of noise, something radio amateurs are normally very good at. It is hard to believe that anyone would put a satellite in competition with the beacons, that makes no sense at all. The locals explained that this is the legacy 6m DX Liaison frequency, now the W7A default SOTA 2m simplex channel, and probably not used much for its original purpose any more.

If You and your buddies decide to find an out of the way frequency to hang out on. After tuning around, you find a nice, quiet frequency that no one seems to using and start operating there. Nothing to worry about, right? Not so fast, there are a few more things to consider when selecting a frequency on the 2m band.

The first thing we need to know are the frequencies that the FCC has authorized for our particular license class. For the HF bands, the frequency privileges depend greatly on the license class of the operator. Above 50 MHz, the frequency allocations are the same for Technician licenses and higher. The FCC has restricted Knowing the FCC frequency authorizations is a good start but we need to check a bit further. Amateur radio operators use a variety of modulation techniques to carry out communications.

We need to use our authorized frequencies wisely by sharing the band with other users and avoiding unnecessary interference. Thus, it makes sense to have a band plan that divides the band up into segments for each type of operation.

As shown in the table, the 2m amateur band plan supports a wide variety of radio operation. Large portions of the band are dedicated to FM operation, consistent with the popularity of the FM mode. There are portions of the band designated for repeater outputs which is the frequency that we tune to receive the repeater and repeater inputs which is the frequency we transmit on to use the repeater.

Notice that these segments are positioned kHz apart consistent with the standard 2m repeater offset.

There are also frequencies designated for FM simplex. On the low end of the band, we see segments for some of the more exotic modes. EME operators communicate by bouncing their signals off the moon. Further up the band, we see segments for SSB operation and beacon operation. The mode is more efficient than FM when signals are weak, so it is the way to go when you are trying to push the limits of 2m DX. Beacons are transmitters that are always on, transmitting a short CW message as a propagation indicator for distant stations.

We often think of 2 meters as a local coverage band but when conditions are right, contacts can be made with stations over a thousand miles away.

ND5Y , Jan 8, I don't remember the exact frequency - it was in my radio but it looks like I've changed it now though. After checking the AO suggestion that's roughly where I remember listening.

Does that satellite function more or less like a repeater - receiving and resending voice? That would explain things, and if so that's really rather interesting!! I have to figure out how to get on there! K1IGS , Jan 9, That is exactly what it is a repeater. WW0W , Jan 10,