[arm-allstar] What does linktolink do??? was: TX Inhibit (David McGough)

[David McGough]

linktolink=yes only matters for node (B), the simplex HF radio, which 
would be set to duplex=0, probably.

Any node such as node (A), a full-duplex repeater, that is set in duplex=2
(or 3 or 4) ignores the linktolink parameter in that stanza entirely.


73, David KB4FXC


On Mon, 15 Feb 2016, Barry Buelow wrote:

> Dave,
> Assuming a single RPi with 2 interfaces and radios:
A.  UHF full duple
B.  HF SSB simplex
> 
> Does this parameter (linktolink) get set=YES in ONLY the UHF or both nodes?
> Note: A simplex UHF to simplex HF would likely be a bad design as the HF COS could go active for long periods do to noise of hf activity.
> 
> Barry w0iy
> 
> 
> Â  1. Re: What does linktolink do??? was: TX Inhibit (David McGough)
> 
> 
> Setting linktolink=yes applies to simplex nodes (duplex=0 or duplex=1)
> ONLY.  The major issue that setting linktolink=yes resolves is that it
> allows the the simplex radio's PTT to be activated by a connected
> full-duplex node at -any- time, even when the simplex radio's COR
> signaling is active.
> 
> So, this is useful in several scenarios. First, lets say you've got a 
> remote-base tuned to a local repeater. During an active net, the local 
> repeater might never stop transmitting, keeping the remote-base COR 
> continuously active. Without enabling linktolink, a full-duplex node 
> that's connected to the remote-base can NOT ever cause the remote-base to 
> transmit (PTT is "locked out", COR has priority).
> 
> A second scenario is where you've got a HF rig and you want a linked 
> full-duplex node to trigger the PTT of the HF rig at any time, even while 
> the HF COR signaling is active.
> 
> linktolink is a "have to have" parameter for connecting multiple radio 
> systems over analog RF!
> 
> 73, David KB4FXC
>