Hi Steve and the group.  When was 146 opened to Florida?
----- Original Message -----
From: "Steve" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, June 29, 2005 2:55 PM
Subject: Re: recent openings in the midwest


> Kevin,
>
> FYI, Maximum Usable Frequency normally refers to HF propagation.  The Band
> openings on VHF have other influences.
>
> One which can affect 6 and 2 meters, is scattered E ionization.  This does
> relate to MUF, as there needs to be a lot of ionization to reach the lower
> E
> layer.  At times, there will be a track of ionization which will bend
> signals
> back to earth which would normally be line-of-sight.  I've seen
> communication
> between Florida and here in Michigan on 146MHz based on scattered E.
> Typically, one would expect scattered E incidents around this time of
> year.
>
> The other phenomenon which afects VHF and UHF particularly at 144MHz and
> higher, is tropospheric communication.  Often, troughs are formed between
> warmer layers of air near the earth and cooler ones above, or between the
> boundaries of cold and warm fronts.  I've seen fairly long paths using
> tropo
> here in Michigan extending more often than not on a more east-west path or
> northeast-southwest.  In general, I've seen more north-south paths using
> scattered E.
>
> Steve, K8SP