Kevin,
I strongly recommend CTCSS over DCS. It's hard enough to tweak commercial-grade
radios to have exactly the right digital waveform to reliably encode and decode
DCS, but Amateur-grade transceivers are not nearly as reliable. Also, the DCS
turn-off code is always a 134 Hz tone, regardless of what code you have
selected, so any other stations on your frequency will mute your station at the
same time, if they are also using digital coded squelch. This can be quite
annoying!
73, Eric Lemmon WB6FLY
Kevin & Natalia wrote:
> Hi All,
>
> We have run into a problem with some local interference getting into one of
> our link radios. It is believed to be coming from one of the TV home
> transmitters, that one can buy from the local appliance shops. It is
> producing a signal right on the input of our link. I have put an extra filter
> in line, but this did not fix it. I really do not want to do through the
> hassle of trying to get another set of freqencies at this stage. I should add
> that, when the RX is receiving a signal from the TX link, it overrides the
> interference nicely. The interference is just enough to open the squelch.
> Have thought about putting either CTCSS, or a newer DCS TX/RX boards in the
> link system. I have read somewhere that DCS is the better way to go. If this
> is the case, where is the best place to purchase boards to fit inside our
> radios. We are using Tait T345 and T346 gear.
>
> Any information will help point us in the right direction.
>
> Regards
>
> Kevin, ZL1KFM.
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