[Scan-DC] NPS-Capital Parks

Henry Bright hcbright10 at gmail.com
Thu Aug 6 22:09:03 EDT 2026 

I'm not sure that's correct.

For example, 417.975 is a repeater input, but it's labeled as an
output on the RRDB. The standard -9 MHz offset for the output =
408.975, one of the Wolf Trap freqs I previously identified.

-Henry

On Thu, Aug 6, 2026 at 9:35 PM Andy Long via Scan-DC
<scan-dc at mailman.qth.net> wrote:
>
> Ken...you're correct.  The Wolftrap frequencies are correct in the
> RRDB.  Easy to monitor once you get within a few miles of the venue.
>
> -Andy
>
> On 8/6/2026 9:23 PM, Kenneth N4VKF via Scan-DC wrote:
> > The UHF frequencies may just be used at the Wolftrap performing arts park.  I don't think Wolftrap is part of the National Capital Parks.  They have a special misson.
> >
> >
> > ________________________________
> > From: ~Bill <ecps92 at earthlink.net>
> > Sent: Thursday, August 6, 2026 1:06 PM
> > To: 'Henry Bright' <hcbright10 at gmail.com>; 'Kenneth N4VKF' <N4VKF at outlook.com>
> > Cc: Scan-DC at mailman.qth.net <Scan-DC at mailman.qth.net>
> > Subject: RE: [Scan-DC] NPS-Capital Parks
> >
> > Henry and all here is what I had/have based your freq list
> >
> > 169.7750 $4C5 - GW Parkway
> > 163.3375 input
> >
> > 170.0500 $4C5 - GW Parkway - not sure what my note means (Repeater site or user) Great Falls Visitor Center
> > ??? input
> >
> > 170.5125 $4C5 - NPS, was used/listed as a First Aid/EMS channel in prior NSSE events (Channel Plan)
> > 164.5750 input
> >
> > 173.8250 $4C5 - GW Parkway - Fort Hunt Repeater
> > ??? input
> >
> > 172.4500 $4C5 - No Records for the DMV Region or that Freq with the NAC at all
> >
> > 410.5125 $4C5 - New one to me, only prior finds had been TVA (TN)
> >
> >
> > Bill - N1KUG
> > Boston, Mass
> > Cruise Ship Frequencies
> > https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fscanmaritime.com%2F&data=05%7C02%7C%7C1930dd5974ad4842a14008def3dd18ae%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C639216328084442930%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=HAYCavsOFT9kA%2B8%2BSxe8Nvmts%2FWW8t%2FkPG1ReojAYoU%3D&reserved=0<http://scanmaritime.com/>
> >
> >
> > -----Original Message-----
> > From: scan-dc-bounces at mailman.qth.net [mailto:scan-dc-bounces at mailman.qth.net] On Behalf Of Henry Bright via Scan-DC
> > Sent: Wednesday, August 5, 2026 8:06 PM
> > To: Kenneth N4VKF
> > Cc: Scan DC
> > Subject: Re: [Scan-DC] NPS-Capital Parks
> >
> > 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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