Re: [Repeater-Builder] Re: D-Star (Protocol and Repeaters)

[Storer, Darren]

Don't forget Tetra, which is huge in Europe...

73 de Darren
G7LWT

On 7 April 2010 13:11, Doug Bade  wrote:

>
>
>  There are several. Harris- OpenSky, P25 Phase 2 are currently being
> deployed, and Iden ( Nextel ) Motorola has a version for municipals. I do
> not know if anyone ever built it but I saw it on proposals a few years back.
>
>
>
>
> It almost sounds like you're talking about a trunked (multi-site) system
> though, and I don't know of any trunked TDMA-based commercial offerings in
> the 2-way radio market. Anyone else heard of one?
>
>
> --
> Nate Duehr, WY0X
> n...@natetech.com 
>
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Re: [Repeater-Builder] Duplexers F S

[Storer, Darren]

Hi Jeff,

I wouldn't worry about being a member of the Batboard Discussion Forum, it's
quite impossible to sign up as the "captcha" security device (jumbled
letters and numbers) is the most fascist I've EVER encountered.

There's no way that someone with minor visual impairment could ever sign up
to the Batboard; I have uncorrected vision and can't make out 30% of the
letter/number combinations (after > 6 attempts)...

Maybe there's some trick to signing up that I'm not aware of...?!?

73 de Darren
G7LWT

On 20 February 2010 20:33, Jeff DePolo  wrote:

>
>
> > The 4 WaCom UHF 10" cavities I believe were designed to be
> > part of a simple duplexer for a UHF-Lo repeater. They
> > *should* tune up to the 440 ham band based on what Telewave
> > has listed for specs on the current modern day model number.
> > Current config is Pass RX Reject TX on 3 cans and Pass TX
> > Reject RX on the 4th can.
>
> I'm not a Batlabs member, nor do I care to be (not that I have anything
> against Batlabs, just suffering from information overload the way it is).
> Are these pass/reject cavities (I assume they are based on your description
> above).
>
> I'm in need of UHF bandpass cavities. Just straight bandpass, not
> pass/reject. Preferably quarter-wave rather than 3/4 wave, diameter doesn't
> matter. Have loads of stuff to trade or cash. Anyone?
>
> --- Jeff WN3A
>
>  
>

Re: [Repeater-Builder] Tait T800 series 1 low band for 6m?

[Storer, Darren]

Hi Martin,

perhaps the repeater keeper of GB3VI can be of assistance to you:

http://www.repeaters.pwp.blueyonder.co.uk/index_files/Page406.htm

73 de
Darren
G7LWT

2009/12/2 cruizzer77 

>
>
> I'm collecting info about using a Tait T800 series 1 low band repeater as a
> ham 6m repeater, but info is very scarce. I do not own such a repeater yet
> but know where I'd get one in case I see that there is some hope for
> success.
>
> These are the problems one will most likely run into:
>
> First of all the factory software to generate the hex files is very
> stubborn and refuses to generate files for out of band frequencies. The
> factory frequency range is 66-88 MHz while I'd need it between 51 and 52
> MHz. BTW I only have the old dos software as the newer windows version is
> nowhere to be found.
>
> Second the hardware may need some tweaking, but to what extent?
>
> Furthermore I have not found the manuals for the T825 (RX), T827 (Exciter)
> and T828 (PA) modules.
>
> I'd appreciate if those who know these repeaters could say a few words
> about it. Thanks guys.
>
> 73 de Martin HB9TZW
>
>  
>

[Repeater-Builder] D-Star/FM Dual Mode Working - RNC Diagram

[Storer, Darren]

After the original posting last week, we had a number of off-list enquiries
about the Remote Node Controller (RNC) for D-Star/FM dual mode working.
Rather than respond individually, here is a diagram for the combined RF
Switching / RNC circuitry:

http://www.g7lwt.com/documents/dv/Remote_Node_Controller_v1.jpg


(BOM to follow)

High level functional overview:

http://www.g7lwt.com/documents/dv/gb3mi_gb7mi.pdf


There are also a number of additional diagrams, a PCB layout and some
software to be released shortly. Hopefully this diagram addresses most of
the questions that were raised but the next update should cover all of the
project details.

Acknowledgements must be made for G1DVA and G8PWE's efforts in designing,
debugging and documenting the RNC project.

73 de Darren
G7LWT
UK Interconnect Team


  from
  "Storer, Darren" <[EMAIL PROTECTED]>   hide details  9 May (5 days ago)   to
  Repeater-Builder@yahoogroups.comdate 9 May 2008 18:44subject Re:
[Repeater-Builder] Dstar in an analog world - Ex-FCC Denies Petition
 mailed-by
gmail.com   Hi,

here in the UK we first started dual mode (FM/DV) working a couple of months
ago, using a common duplexer, antenna and frequency pair. GB3MI (FM) and
GB7MI (D-Star/DV) were co-located both physically and in frequency. An
overview of the approach can be seen here:

http://www.g7lwt.com/documents/dv/gb3mi_gb7mi.pdf


2 weeks ago GB7YD (DV) and GB3NA (FM) were also co-located using the same
approach. GB7YD is connected to the D-Star network via a G2 VoIP server and
this PC is used to remotely control repeater switching priorities
(Auto/DV/FM). The Remote Node Controller (RNC) connects to the G2 Linux PC
parallel port, responding to command line instructions. V2 of the RNC
software will interpret switching commands via D-Star RF (following the /
parameter) from authenticated users only.

This system of integration depends on constant CTCSS access (rather than UK
style 1750Hz tone burst) to avoid GMSK activation of COS on the FM repeater.
DV users are encouraged to use "auto detect" on their D-Star radios so they
are aware of FM users. This is particularly important as DV mode carries
priority by default, so rogue D-Star transmissions could potentially
interrupt FM QSOs if DV users were not vigilant.

The licensing authorities in the UK have been very receptive to dual mode
working applications as the pressure on VHF amateur allocations is a
particular problem near large conurbations. Dual mode working also
facilitates the direct study and comparison of DV and FM propagation modes.

73 de Darren
G7LWT

Re: [Repeater-Builder] Dstar in an analog world - Ex-FCC Denies Petition

[Storer, Darren]

Hi,

here in the UK we first started dual mode (FM/DV) working a couple of months
ago, using a common duplexer, antenna and frequency pair. GB3MI (FM) and
GB7MI (D-Star/DV) were co-located both physically and in frequency. An
overview of the approach can be seen here:

http://www.g7lwt.com/documents/dv/gb3mi_gb7mi.pdf


2 weeks ago GB7YD (DV) and GB3NA (FM) were also co-located using the same
approach. GB7YD is connected to the D-Star network via a G2 VoIP server and
this PC is used to remotely control repeater switching priorities
(Auto/DV/FM). The Remote Node Controller (RNC) connects to the G2 Linux PC
parallel port, responding to command line instructions. V2 of the RNC
software will interpret switching commands via D-Star RF (following the /
parameter) from authenticated users only.

This system of integration depends on constant CTCSS access (rather than UK
style 1750Hz tone burst) to avoid GMSK activation of COS on the FM repeater.
DV users are encouraged to use "auto detect" on their D-Star radios so they
are aware of FM users. This is particularly important as DV mode carries
priority by default, so rogue D-Star transmissions could potentially
interrupt FM QSOs if DV users were not vigilant.

The licensing authorities in the UK have been very receptive to dual mode
working applications as the pressure on VHF amateur allocations is a
particular problem near large conurbations. Dual mode working also
facilitates the direct study and comparison of DV and FM propagation modes.

73 de Darren
G7LWT


On 09/05/2008, Robert Pease <[EMAIL PROTECTED]> wrote:
>
>Interesting idea, Seems like you could put both repeaters on the same
> freq, as your current analog repeater, you shouldn't need another pair just
> for DStar.
>
> Not knowing alot about Dstar, it seems that the problem you could run into
> is if the analog repeater where in use, the Dstar users wouldn't know it and
> talk over them.
>
> Maybe the answer is to inhibit the Dstar system when the analog TX is up?
>
> Rob - KS4EC
>
>  --
> *From:* Repeater-Builder@yahoogroups.com [mailto:
> [EMAIL PROTECTED] *On Behalf Of *Ron Wright
> *Sent:* Friday, May 09, 2008 8:47 AM
> *To:* Repeater-Builder@yahoogroups.com
> *Subject:* Re: Re: [Repeater-Builder] FCC Denies Petition to Utilize 2m
> Sub-Band for Digita
>
>
>
> Joe,
>
> I am planning adding D-Star to my analog 2m repeater. I am planning a dual
> control so if a user has CTCSS then the analog side would work and if no
> CTCSS then the d-star path would be used. Not a full D-Star approach for we
> will not be looking for the D-Star formated data, only if you have CTCSS or
> not. Simple and hopefully can get some interest in D-Star and demo its
> advantages and disadvantages.
>
> The problem is in some areas, like where I am, there are no pairs for
> D-Star to go on in the 2 m band. We are full and this is the problem in many
> areas.
>
> Also the D-Star ICOM controllers are not like most repeater controllers.
> They talk to the ICOM repeaters with a Cat-5 cable with serial data giving
> commands such as ptt, digital audio data, etc. Not the simple get COS/key
> transmitter. So if doing full D-Star and wanting to get into the gate way,
> ICOM's IRLP or Echolink, then you need ICOMs controller. Much more complex
> solved with $. A D-Star repeater can go for $5-10k and this is for what is
> on the ground.
>
> There have been couple analog repeaters converted to D-Star here. This has
> been the most growth.
>
> 73, ron, n9ee/r
>
> >From: MCH <[EMAIL PROTECTED] >
> >Date: 2008/05/08 Thu PM 10:45:33 CDT
> >To: Repeater-Builder@yahoogroups.com 
> >Subject: Re: [Repeater-Builder] FCC Denies Petition to Utilize 2m Sub-Band
> for Digita
>
> >
> >You know a lot of this problem could "go away" of they would only make
> >dual mode repeaters like P25 systems are. Then, you could replace an
> >existing repeater and simply ADD the D-STAR mode to the area. That way,
> >you could have just as many D-STAR repeaters as analog repeaters with
> >the same coverage.
> >
> >Joe M.
> >
> >Ron Wright wrote:
> >> Jim,
> >>
> >> I tend to agree more spectrum is not needed on 2 meters just to
> accommodate D-Star or any other mode, digital or analog. Many analog boys
> are also starving for space for their repeaters.
> >>
> >> D-Star does look for the proper D-Star format to "unsquelch" as one
> might say. It does not simply turn on with signal like many analog rigs do.
> The repeaters and rigs do this.
> >>
> >> This is why, as you very well know, we use CTCSS...to unsquelch the rcvr
> when the proper tone rcv'd.
> >>
> >> The petition to the FCC was an attempt to gain more repeater pairs
> mainly for D-Star. I am sure the petitioners would have wanted the expansion
> to go for digital only. I am sure the FCC saw thru this.
> >>
> >> Another issue popped up about a year ago. An FCC rep made a comment at a
> forum stating or more like asking if D-Star was really a normal Ham repeater
> since it delay

Re: [Repeater-Builder] Tait T296/01 PSU

[Storer, Darren]

Hi Geoff,

sadly it looks like you missed a bargain back in November:

http://tinyurl.com/2zhl72

Perhaps you could trying contacting the buyer and see if you can come to
some sort of arrangement...

73 de Darren
G7LWT


On 04/01/2008, gi0gdp <[EMAIL PROTECTED]> wrote:
>
>   I wonder if anyone has any info on the Tait T296/01 PSU as in used in
> the Tait 300 series repeaters,
> regards
>
> Geoff Pike
> GI0GDP
>
> 
>