[Scan-DC] NPS-Capital Parks

[Eric C. Carlson]

I was curious about Catoctin NP in the past. Their VHF channel was silent
including during an active SAR in the park.

-Eric

On Thu, Aug 6, 2026, 8:07 PM Matt Stevens via Scan-DC <
scan-dc at mailman.qth.net> wrote:

> Some in MD region NPS Protection Rangers (LE) utilize MD FiRST talkgroup
> 8415 (ENC) for ops. It is often active on Montgomery and some of the
> western FiRST cells (likely CO Canal users and maybe Catoctin or other NPS
> Sites).
>
> CO Canal/Great Falls area PSAR Rangers utilize 8438 (clear) on MD FiRST. I
> have also heard Fee Booth and the Comms Center Dispatcher talk to PSAR
> staff.
>
> On Thu, Aug 6, 2026 at 1:11 PM Alan Henney via Scan-DC <
> scan-dc at mailman.qth.net> wrote:
>
> > My bad. The NG uses encrypted TGs in the 1164x range on the DC P25 net.
> >
> > Thanks to Henry for catching my mistake.
> >
> > Alan
> >
> > On Wed, Aug 5, 2026, 8:55 PM Alan Henney <alan at henney.com> wrote:
> >
> > >
> > > Apparently, they are mostly on the DC P25 network, mostly TGs in the
> > 114xx
> > > range.
> > >
> > > But I wonder if they have any "company channels" in those humvees?
> > >
> > > Regards,
> > > Alan
> > >
> > > On Wed, Aug 5, 2026 at 8:24 PM Lee Williams via Scan-DC <
> > > scan-dc at mailman.qth.net> wrote:
> > >
> > >> Not to hijack the thread but,,,,,,, does anyone know the frequencies
> the
> > >> National Guard is using? It seems every soldier has a walkie-talkie.
> > >>
> > >>
> > >> Sent from my iPhone
> > >>
> > >> > On Aug 5, 2026, at 16:06, Henry Bright via Scan-DC <
> > >> scan-dc at mailman.qth.net> wrote:
> > >> >
> > >> > This has been a task of mine for a while, so I am very curious too.
> > >> Please
> > >> > include me in any answers found.
> > >> >
> > >> > I have personally heard NPS comms on VHF repeaters 169.775, 170.05,
> > >> > 170.5125, 173.825, and 172.45 (all with NAC 4C5). I don't know their
> > >> usage
> > >> > or channel names.
> > >> >
> > >> > Also, I believe Wolf Trap operates on UHF freqs. I have identified
> > >> 408.975
> > >> > and 410.5125 (with the same NAC 4C5).
> > >> >
> > >> > - HBright
> > >> >
> > >> >> On Wed, Aug 5, 2026 at 7:51 PM Kenneth N4VKF via Scan-DC <
> > >> >> scan-dc at mailman.qth.net> wrote:
> > >> >>
> > >> >>
> > >> >>
> > >> >> Does anyone have a good list of NPS frequencies for the Capital
> > >> Parks?   I
> > >> >> am not sure if the RR page is up to date.  I am doing some
> > programming
> > >> for
> > >> >> a future visit to Jones Point.
> > >> >>
> > >> >>
> > >> >> Kenneth Fowler, N4VKF
> > >> >>
> > >> >>
> > >> >>
> > >> >>
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