[K3VOA] DRAFT: TMARC Application

[E Allen Brown]

Hi Gary,
I rechecked the numbers and it looks good to me.
73,Al  KZ3AB


-----Original Message-----
From: Gary W3GRB <w3grb at garybutterworth.com>
To: Al Brown <kz3ab at hotmail.com>; marc.k3poe at gmail.com; k3hu at arrl.net
Cc: k3voa <K3VOA at mailman.qth.net>
Sent: Mon, Sep 12, 2022 4:52 pm
Subject: Re: [K3VOA] DRAFT: TMARC Application

This is a big help, Al. MANY thanks!

Hugh, Marc, (and anyone else),

I *think *this might be ready to go to T-Marc. Can you please give it a
final once over and let me know if I should go ahead and submit this?
I mention Hugh and Marc specifically since I list them as contacts and
"signed" Hugh's name.

Thank you,
Gary

On Fri, Sep 9, 2022 at 3:01 PM Al Brown <kz3ab at hotmail.com> wrote:

> Hi Gary,
>
> In answer to 1),  The license trustee, Hugh Katz, should be one of the
> contacts.
> 2)  The first floor is six feet above ground (on average) and it is 15
> feet high.  Floors 2 through 6 are 10 feet high.  The 7th floor is 20
> feet high. So, I figure the height of the roof is ~95 feet above ground.
> Then add the height of the tower plus the mast plus the height of the
> antenna to get the approximate height of the antenna above ground (AGL).
> 3) No comment.
> 4)Depending on the type of duplexer it is, the Duplexer Insertion loss is
> probably around 2.0 dB.
> 5) You should put in a number in the Duplexer Insertion Loss blank.  The
> If the Transmitter Power is 43.90 dBm, subtract the Duplexer Insertion Loss
> 2.0 dB, subtract the Antenna System Cable Loss 2.06 dB and add the Antenna
> Gain 5.05 dB to give you an Effective Radiated Power of 44.89 dBm (if my
> arithmetic is correct).
>
> In my opinion, you shouldn't sweat the numbers too much.  Since this is a
> low power repeater and the HAAT is a negative number (you have HAAT as -39
> feet. I thought it was -39 meters and you'll have to recalculate the HAAT),
> no one from T-MARC is ever going to inspect it.
>
> Finally, the application should be signed by the license trustee since he
> is the one who is ultimately responsible for the repeater's operation.
>
> So, that's my two cents worth.  Hope this helps.
>
> 73,
> Al KZ3AB
>
> ------------------------------
> *From:* k3voa-bounces at mailman.qth.net <k3voa-bounces at mailman.qth.net> on
> behalf of Gary W3GRB <w3grb at garybutterworth.com>
> *Sent:* Thursday, September 8, 2022 6:20 PM
> *To:* k3voa <K3VOA at mailman.qth.net>
> *Subject:* Re: [K3VOA] DRAFT: TMARC Application
>
> Hi all,
> I probably should have followed up on this a while back, but would any of
> you mind having another look at my attempt at filling out the T-MARC
> Application for Frequency Coordination for our UHF repeater?
>
> Thanks to Al (KZ3AB) for helping me with the HAAT back in August. But I'd
> still be grateful for feedback on the following:
>
> 1) I listed Hugh and Marc as the contacts. Ok?
> 2) Antenna: Do we know our antenna height? Repeaterbook shows us at 100',
> but that seems slightly high to me. Also, am I correct in remembering that
> it's a top-mounted omnidirectional vertical?
> 3) I believe our repeater can handle C4FM, but it's never been enabled. If
> we want to do that, this might not be a bad time to do so.
> 4) ERP Calculations: Do these look right? I based them off of the 2009
> calculations in the binder (still current? JPGs attached), but I couldn't
> figure out how duplex loss factors in.
> 5) Who should sign?
>
> Thank you!
>
> --
> 73 de Gary, W3GRB
>
> On Tue, Aug 2, 2022 at 2:00 PM Gary W3GRB <w3grb at garybutterworth.com>
> wrote:
>
> > Hi all,
> >
> > My first pass at the T-Marc frequency coordination application is
> attached.
> > I'll be grateful for your review/feedback on each item, but especially:
> >
> > 1) I listed Hugh and Marc as the contacts. Ok?
> > 2) Antenna: Do we know our antenna height? Repeaterbook shows us at 100',
> > but that seems slightly high to me. Also, am I correct in remembering
> that
> > it's a top-mounted omnidirectional vertical?
> > 3) I believe our repeater can handle C4FM, but it's never been enabled.
> If
> > we want to do that, this might not be a bad time to do so.
> > 4) ERP Calculations: Do these look right? I based them off of the 2009
> > calculations in the binder (still current? JPGs attached), but I couldn't
> > figure out how duplex loss factors in.
> > 5) Who should sign?
> >
> > Thank you!
> >
> > --
> > 73 de Gary, W3GRB
> >
>
>
> --
> 73 de Gary, W3GRB
>


-- 
73 de Gary, W3GRB
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