Messages

391

10/11 meters / 11 meter activity DX via W3HFU KiwiSDR 1245 UTC+ 29 September 2021

« on: September 29, 2021, 1310 UTC »

Band appears to be waking up this morning - 1245 UTC / 0845 local time.


26225 USB 26.225 MHz USB - Spanish language, Mexican accents, known SSB "low channel" frequency
26345 AM 26.345 MHz AM - Spanish language, YL with roger beep - possibly taxi dispatcher
26485 AM 26.485 MHz AM - Spanish language, weak - known Latin American freebander frequency
26525 AM 26.525 MHz AM - Spanish language, mixing in with SSB traffic on same frequency
26525 LSB 26.525 MHz LSB - Spanish language, likely QSY from 26555 LSB
26555 LSB 26.555 MHz LSB - Spanish language SSB DX calling frequency, very busy (see also: 27455 USB)
26565 AM 26.565 MHz AM - Spanish language chatter, Mexican accents and Caribbean accents
26585 AM 26.585 MHz AM - Mexican trucker freeband channel, sporadic signals heard
26705 AM 26.705 MHz AM - Puerto Rico and other locations heard, similar to 26715 AM
26715 AM 26.715 MHz AM - Puerto Rico and other locations heard, very big signals

26965-27405 - legal 40 CB channels, very very busy, noted Puerto Rico active on 27.065 AM (CB channel 9) and SSB activity on 27.365 LSB, 27.375 LSB, 27.385 LSB and 27.395 LSB.  Activity noted on numerous AM channels.  27.200 MHz USB currently quiet...

27440 USB 27.440 MHz USB - Weak SSB activity heard, UNID language/user
27455 USB 27.455 MHz USB - Spanish language DX calling frequency, very busy
27465 AM - 27.465 MHz AM - Same test signals heard on 27.485 at 1306 UTC
27485 AM - 27.485 MHz AM - Carrier, followed by carrier modulated by 1000Hz tone at 1302 UTC
27495 LSB 27.495 MHz LSB - English language, Caribbean accents
27500 LSB 27.500 MHz LSB - English language, Caribbean accents - with roger beeps
27500 USB 27.500 MHz USB - English language chatter, Caribbean accents (weak)
27515 LSB 27.515 MHz LSB - Jamaican stations and other Caribbean activity - English language, very busy
27575 AM 27.575 MHz AM - Tail end of AM transmission heard, UNID user

392

10/11 meters / Re: St. Maarten on 27550 USB working DX 2100+ UTC 24 Sept 2021

« on: September 29, 2021, 1142 UTC »

Yep the band was nice and open the other day.  27.555 USB was busy, as were most frequencies from roughly 27.500 MHz to 27.700 MHz in 5 kHz steps.  27.510 MHz LSB was very busy with Caribbean-accented English transmissions and I heard some activity on "The Jamaican Connection" Knight Patrol DX Club primary frequency - 27.515 MHz LSB.  27.510 LSB is a secondary frequency for them. 

Also noted some French language chatter on 27.710 MHz USB I believe.  Another interesting one was the fact that I heard some Spanish speaking stations using 27.200 MHz USB without any issues (or QRM from the US station activity on 27.205 AM).  Same with the Mexican taxi cab dispatch lady on 27.515 MHz AM (27.515 LSB and 27.520 USB both were very busy, even with the 27515 frequency being used for AM traffic on top of them).

393

10/11 meters / St. Maarten on 27550 USB working DX 2100+ UTC 24 Sept 2021

« on: September 24, 2021, 2112 UTC »

348LR067 and 348LR002 working numerous stations on 27550 USB 27.550 MHz - including 9 division (Mexico), 2 division (USA), heard Portugal and several other stations on frequency.

27.555 USB was very busy earlier, but the band appears to be closing

394

10/11 meters / 11 meter activity DX via W3HFU KiwiSDR 2020 UTC+ 24 September 2021

« on: September 24, 2021, 2057 UTC »

Active band this afternoon:

26305 AM 26.305 MHz AM- Spanish language, Latin American trucker/freebander channel
26485 AM 26.485 MHz AM - Spanish language chatter
26555 LSB 26.555 MHz LSB - Spanish language, this is the "low band" counterpart to 27.455 MHz USB
26575 AM 26.575 MHz AM - Spanish language, sporadic signals
26585 AM 26.585 MHz AM - Spanish language chatter - Mexican trucker and freeband CB low channel / AM channel
26605 AM 26.605 MHz AM - Spanish language, Mexican accents
26665 AM 26.665 MHz AM - Strong AM signal here for a few seconds, presumably related to 26.705 AM/26.715 AM
26715 AM 26.715 MHz AM - Spanish language, Puerto Rico big radios channel
26845 AM 26.845 MHz AM - "meetings" - probably a US-based station
26885 AM 26.885 MHz AM - "ohhh!" "HOLLLAAAAAAA"

26965-27405 - legal 40 CB channels - very busy

27425 USB 27.425 MHz USB - Spanish language
27455 USB 27.455 MHz USB - Spanish language DX channel, very very busy
27460 USB 27.460 MHz USB - Spanish language heard, roger beep and noise toys
27465 USB 27.465 MHz USB - Weak SSB signal heard, sounds like SS OMs chatting
27475 USB 27.475 MHz USB - Spanish language activity, Mexican accents 27545
27485 USB 27.485 MHz USB - More SS OMs, very busy
27490 USB 27.490 MHz USB - Spanish language chatter
27495 USB 27.495 MHz USB - "CQ 11 meters, hello!" (in Spanish)
27500 USB 27.500 MHz USB - Spanish language, weak
27505 USB 27.505 MHz USB - "2014, QSL, John?"  -  Caribbean accented English heard at 2029 UTC
27510 USB 27.510 MHz USB - JOSIE (read phonetically) SIO 444 heard at 2030 UT27515C, working unreadable station
27515 AM 27.515 MHz AM -  YL dispatcher, likely taxi cab dispatcher (have heard her numerous times before on this frequency)
27515 LSB 27.515 MHz LSB - Heavily accented Jamaican stations
27520 USB 27.520 MHz USB - French language chatter heard, mention of "Guadelupe", good signals
27525 USB 27.525 MHz USB - Spanish
27535 USB 27.535 MHz USB - 3AT282 CQ West Indies - "hello CQ West Indies...3 Alpha Tango Two-Eighty-Two"
27545 USB 27.545 MHz USB - heard "West Indies" clearly, didn't copy an ID27580
27550 USB 27.550 MHz USB - 348LR067 working 9SD200 and numerous others, including a station in Portugal
27555 USB 27.555 MHz USB - Several stations heard at points, international calling frequency, MCW CW also heard
27560 USB 27.560 MHz USB - Weak signal heard, possibly Caribbean accented English
27570 USB 27.570 MHz USB - French language heard, SIO 333 to SIO 444
27575 USB 27.575 MHz USB - heard "Romeo Charlie" and "Sugar Delta" DX club IDs (in Spanish)
27580 USB 27.580 MHz USB - English language, heavy Caribbean accents
27585 USB 27.585 MHz USB - Spanish language chatter
27595 USB 27.595 MHz USB - "CQ 11 metros" (Spanish language heard) - 10AB [unreadable]
27600 USB 27.600 MHz USB - Spanish language, then English heard (Caribbean accents)
27615 AM 27.615 MHz AM - Spanish-speaking signals, OMs with roger beeps, possibly taxi cabs or truckers
27625 USB 27.625 MHz USB - Spanish language, poor copy
27655 USB 27.655 MHz USB - Spanish language, fair to weak copy
27670 USB 27.670 MHz USB - Spanish, weak but can hear 3-4 other stations on top of each other
27675 USB 27.675 MHz USB - Spanish language
27695 LSB 27.695 MHz LSB - Spanish language, known Latin American freebander channel
27695 USB 27.695 MHz USB - Spanish language chatter
27705 USB 27.705 MHz USB - Spanish language, poor signals
27710 USB 27.710 MHz USB - French language
27715 USB 27.715 MHz USB - French language, decent signal at points, heavy QSB
27765 USB 27.765 MHz USB - Spanish language, sporadic signal
27855 USB 27.855 MHz USB - Spanish language, poor signals
27915 AM 27.915 MHz AM - Spanish language, presumably truckers

395

10/11 meters / Re: 11 Meter Activity Latin American Taxi Dispatchers 1400 UTC + 22 September 2021

« on: September 22, 2021, 1720 UTC »

Back on at 1700 UTC:



25875 AM - 25.875 MHz AM - Weak AM signal noted, probably taxi cab dispatch based on frequency and mode
26065 AM - 26.065 MHz AM - Spanish language, very weak
26585 AM - 26.585 MHz AM - Spanish language - Mexican trucker 26MHz channel
27025 AM - 27.025 MHz AM - CB Channel 6 - Busy, as to be expected
27065 AM - 27.065 Mhz AM - CB Channel 9 - Spanish language, this is the in-band calling channel, sort of like 6/11
27075 AM - 27.075 MHz AM - CB Channel 10 - Spanish language with whistling into mic
27085 AM - 27.085 MHz AM - CB Channel 11 - AM calling channel, busy
27105 AM - 27.105 MHz AM - CB Channel 12 - US stations
27185 AM - 27.185 MHz AM - CB Channel 19 - busy, noisy heterodyne (not surprising)
27200 USB - 27.200 MHz USB - Spanish language chatter, in-between channels 19A and 20
27205 AM - 27.205 MHz AM - CB Channel 20 - US stations
27225 AM - 27.225 MHz AM - CB Channel 22 - US stations
27245 AM - 27.245 MHz AM - CB Channel 25 - US stations
27255 AM - 27.255 MHz AM - CB Channel 23 - US stations, fair to weak copy
27265 AM - 27.265 MHz AM - CB Channel 26 - active with US stations working AM DX
27285 AM - 27.285 MHz AM - CB Channel 28 - active with US stations working AM DX
27305 AM - 27.305 MHz AM - CB Channel 30 - US stations
27355 AM - 27.355 MHz AM - CB Channel 35 - US stations
27385 LSB - 27.385 MHz LSB - CB Channel 38 - active with US based stations working DX
27405 AM - 27.405 MHz AM - CB Channel 40 - active
27445 USB - 27.445 MHz USB - Spanish language chatter
27455 USB - 27.455 MHz USB - Spanish language, Latin American 11m SSB calling frequency
27475 AM - 27.475 MHz AM - Spanish language, with roger beeps
27555 USB - 27.555 MHz USB - Weak SSB traffic noted at 1716 UTC
27655 USB - 27.655 MHz USB - Spanish language, OMs chatting


The use of SSB on 27200 is interesting.  I've seen sideband activity in the lower in-band channels before (defined as channels 1-23 so 26965 to 27255).  Usually its on channel 16.  This is doubly interesting because its on an offset frequency from 27.195 MHz and 27.205 MHz, or 5 kHz up from RC channel 27.195 MHz.  Would make more sense to use LSB vs. USB but the users didn't seem to have any issues with QRM even though there was quite a bit of chatter on 27205 AM. 

396

10/11 meters / 10 meter FM activity 29.620 MHz repeater 1425 UTC 22 Sept 2021

« on: September 22, 2021, 1428 UTC »

Weak FM signal on 29600 29.600 MHz,

29620 FM 29.620 MHz FM 29.62 MHz FM active with YL and OM operators having a QSO, noted repeater tone burst at the end of the transmissions...am yet to hear a callsign or repeater ID

397

10/11 meters / 11 Meter Activity Latin American Taxi Dispatchers 1400 UTC + 22 September 2021

« on: September 22, 2021, 1426 UTC »

Checking some KiwiSDRs

W3HFU KiwiSDR - Westminster, MD - band fairly quiet, but some Latin American activity coming in, including taxi cabs on 25 MHz and 26 MHz and somebody playing sound effects and music clips on 28005.0 AM (with Spanish language over it, lots of echo too!) - CBers on 10 meters

25695 AM - 25.695 MHz AM - Taxi cab dispatcher, YL dispatch lady talking to OM driver, roger beeps heard (poor copy)
26035 AM - 26.035 MHz AM - Taxi cab dispatcher, YL reading numbers with roger beep, good copy
26365 AM - 26.365 MHz AM - Spanish language chatter, poor copy - possible taxi cab dispatch
26375 AM - 26.375 MHz AM - UNID Spanish language chatter, presumably Latin American taxis or truckers
26395 AM - 26.395 MHz AM - Spanish language QSO
26405 AM - 26.405 MHz AM - Spanish language, weak
26415 AM - 26.415 MHz AM - Spanish language, two OMs chatting, poor copy
26475 AM - 26.475 MHz AM - Spanish language - two OMs having a QSO, Mexican accents
26485 AM - 26.485 MHz AM - Very weak AM signal noted, unable to copy language
26565 AM - 26.565 MHz AM - Spanish language OMs, Mexican accents
26575 AM - 26.575 MHz AM - Spanish language, not as busy at 26.585 AM but similar signal strengths
26585 AM - 26.585 MHz AM - Spanish language - Mexican trucker freeband frequency, very busy at points
26715 AM - 26.715 MHz AM - Puerto Rico and other locations BOOMING in at 1520 UTC, 1522 UTC
26765 AM - 26.765 MHz AM - English language, US stations, southern accents
26935 AM - 26.935 MHz AM - Taxi cab dispatch, YL dispatcher and OM driver heard, with roger beeps at 1408 UTC

numerous in-band channels active, not listing them on this log due to the amount of out of band activity

27455 USB - 27.455 MHz USB - Spanish language SSB calling channel (similar to 26555 LSB) - active with several signals at once
27545 AM - 27.545 MHz AM - Spanish language, lots of noise toys and sound effects heard, including the Mario Bros. theme song
27655 LSB - 27.655 MHz LSB - Spanish language with end of transmission roger beep
27755 AM - 27.755 MHz AM - Spanish-speaking OMs, one station off-frequency on 27756.2
27765 AM - 27.765 MHz AM - Taxi cab dispatcher, YL reading numbers with roger beep - Spanish language
27785 AM - 27.785 MHz AM - Spanish language chatter, OM operators - possibly truckers or similar considering their use of AM
27875 AM - 27.875 MHz AM - "616" "615" heard (OM dispatcher with roger beep)
28005 AM - 28.005 MHz AM - Spanish language, music and sound FX heard at 1417 UTC

Around 1425 UTC or so, the band seemed to close a bit, this might have been a short-lived Sporadic-E opening

Checked back in at 1450 UTC

398

10/11 meters / Re: Izhevzsk Russia KiwiSDR 11 meter Logs 1145+ UTC 21 Sept 2021

« on: September 22, 2021, 1114 UTC »

KiwiSDR: SDR on Izhevsk cityIzhevsk, Russia | Grid LO66ou, ASL 32 meters

56.836560, 53.227097 or 56°50'11.6"N 53°13'37.6"E

1100 UTC - 1115 UTC  - 22 September 2021



26945 FM - 26.945 MHz FM - FSK data bursts - likely pager systems (numerous signals on frequency)
26960 FM - 26.960 MHz FM - FSK data bursts - likely pager systems (numerous signals on frequency)
27105 FM - 27.105 MHz FM - FM CB chatter, Russian language
27120 CW - 27.120 MHz Possible ISM or CW beacon? - Two dits every 4-5 seconds on 27120.2
27135 AM - 27.135 AM - Busy channel, Channel C15EA or D15EA - trucker/road channel, similar to 27185 AM
27370 FM - 27.370 MHz FM - FSK data bursts - data link or pager system paging system, similar to 26960 and 26945

399

10/11 meters / 11 meter 27 MHz Frequency Data Link / Paging System Locations 26-28 MHz

« on: September 21, 2021, 2033 UTC »

So I noticed that in addition to Highland Falls, NY 27.255 MHz FSK network, there are at least two other KiwiSDRs that have FSK data burst networks local to them.  The signals on these are identical to the signals noted on the Highland Falls, NY KiwiSDR (WB2EEE).

*N1NTE-1 Holland, MA (grid FN32) 42.032759 N, 72139970 W - 27.255 MHz - strong to fair to weak FSK data bursts, same format as the other receivers, much wider range of signal strengths, possibly indicating multiple systems with coverage overlapping this receiver's RX range capability

*WA2ZKD/1 Rockport, Maine (grid FN54le) 44.175034 N, 69.079214 W - 27.255 MHz - strong FSK bursts

*N2LAW Brookline, New Hampshire (grid FN42dr) 42.711372 N, 71.669474 W - 27.255 MHz - strong to fair FSK bursts, same format as the Highland Falls, NY and Rockport Maine KiwiSDRs.

Rockport, Maine and Brookline, New Hampshire are about 175 miles straightline distance from each other...and, as I'm typing this, the band appears to be almost entirely closed at those locations so the presumption is that the 27255 systems are within a 10-20 mile radius of the receiver locations.

There are a lot of receivers to look through...I am currently on another KiwiSDR in Jumonville, PA and 27255 is clear except for local AM CB chatter.  I am noticing a fair amount of out of band 11 meter activity, especially on 27505 AM, 27510 USB, 27535 AM, 27555 USB, 27560 USB, 27615 AM and 27630 USB but given the lack of any other activity on the band I would venture that the activity I'm hearing is somewhat local (unless the band is starting to wake up at 20:25 UTC - 20:30 UTC.

Maybe the band is starting to wake up after all.  Numerous new signals popping up in the legal 40 CB band 26965-27405 (the Usual Suspects, 27025 AM, 27085 AM, 27265 AM and 27285 AM active) and several additional active frequencies in the 27410-28000 range showing up on the Jumonville PA KiwiSDR.  27445 LSB, 27455 USB and some others.  27255 now has a strong AM QSO going on it, no sign of the familiar FSK bursts though.

I will continue to check SDRs in my free time and update this list accordingly.  Consider it a work in progress to see how many of these systems on 27255 (and the other Part 95 RC frequencies - 26.995, 27.045, 27.095, 27.145 and 27.195) are local to these KiwiSDRs.

*Izhevsk city Izhevsk, Russia | Grid LO66ou:  26.945 MHz and 26.960 MHz - near-constant FSK paging or data burst datalink system



*List:

-WB2EEE Highland Falls, NY - 27255 27.255 MHz FSK - local FSK data link
-N1NTE-1 Holland, MA (grid FN32) 42.032759 N, 72139970 W - 27255 27.255 MHz FSK - local/semi-local FSK data link(s)
-WA2ZKD/1 Rockport, ME (grid FN54le) 44.175034 N, 69.079214 W - 27255 27.255 MHz FSK - local FSK data link
-N2LAW Brookline, NH (grid FN42dr) 42.711372 N, 71.669474 W - 27255 27.255 MHz FSK - local FSK data link
-Izhevsk, Russia (grid LO66ou) - 26945 26.945 MHz FSK - local FSK data link, different format compared to the "standard"
-Izhevsk, Russia (grid LO66ou) - 26960 26.960 MHz FSK - local FSK data link, different format compared to the "standard"

400

Peskies / Re: 9738 kHz USB Spanish Language UNID Stations 2315 UTC 2 Nov 2018

« on: September 21, 2021, 1526 UTC »

Interesting - so not related to the 9738 kHz USB 9738 USB 9.738 MHz USB Spanish language UNID chatter

401

10/11 meters / Izhevzsk Russia KiwiSDR 11 meter Logs 1145+ UTC 21 Sept 2021

« on: September 21, 2021, 1222 UTC »

26945 FM - 26.945 MHz FM - FSK data bursts - likely pager systems (numerous signals on frequency)
26960 FM - 26.960 MHz FM - FSK data bursts - likely pager systems (numerous signals on frequency)
27055 FM - 27.055 MHz FM - Weak FM signals
27075 FM - 27.075 MHz FM - Weak FM signals
27115 FM - 27.115 MHz FM - OM speaking Russian, roger BLEEP
27125 FM - 27.125 MHz FM - Weak FM signals noted
27135 AM - 27.135 MHz AM - Russian language, OMs heard, local (??) carrier signal on 27134.9, very busy channel
27145 FM - 27.145 MHz FM - OM and YL heard, possibly taxi dispatch or taxi controller
27175 FM - 27.175 MHz FM - Russian language, OMs heard, good signals
27215 FM - 27.215 MHz FM - Very busy channel
27250 FM - 27.250 MHz FM - Weak signals (FM signals)
27405 FM - 27.405 MHz FM - FM signal noted, didn't tune to it in time
27505 FM - 27.505 MHz FM - Possible taxi cab dispatcher? 

402

10/11 meters / Re: Izhevzsk Russia KiwiSDR 11 meter Logs 1030+ UTC 17 Sept 2021

« on: September 17, 2021, 1833 UTC »

Checked back in at 1820 UTC (2200 local time)


26865 kHz FM - 26.865 MHz FM - Weak FM signal, UNID, didn't tune to it in time to hear anything
26940 kHz FM - 26.940 MHz FM - FSK data bursts - weaker
26945 kHz FM - 26.945 MHz FM - FSK data bursts - likely paging systems
26950 kHz FM - 26.950 MHz FM - FSK data bursts - paging systems, similar to pager signals on 26960 26.960 MHz
26960 kHz FM - 26.960 MHz FM - FSK data bursts - likely paging systems - some very strong signals, some weaker
26985 kHz AM - 26.985 MHz AM - Weak AM signal noted at 1826 UTC
27135 kHz AM - 27.135 MHz AM - OM operators talking, sometimes several signals at once, road/traffic channel
27200 kHz FM - 27.200 MHz FM - OM CBers, very active (still) - several signals pushing S9+30dB
27425 kHz FM - 27.425 MHz FM - OM heard, weak signal, unsure if CBer or local land mobile taxi dispatch/taxicab

several hooks noted:

start: 26845 or 26850 26.845 MHz 26.850 MHz
end: 26800 kHz 26.800 MHz

start: 26800 kHz 26.800 MHz
end: 26775 kHz 26.775 MHz

start: 26845 kHz 26.845 kHz
end: 26790 kHz 26.790 MHz

start: 26695 kHz 26.695 MHz
end: 26650 kHz 26.650 MHz

403

10/11 meters / Izhevzsk Russia KiwiSDR 11 meter Logs 1030+ UTC 17 Sept 2021

« on: September 17, 2021, 1041 UTC »

1030 UTC / 1430 local


Even more ISM hooks all over the 26-28 MHz region on the waterfall today.  A couple of them are actually within the 26957-27283 ISM region. The 26.945 MHz and 26.960 MHz paging systems are, as to be expected, super busy.  26945 especially so.  The 27200 FM guys were really strong.  27135 AM (channel 15 AM) is apparently used like 27185 AM is here in the USA.

26945 kHz FM - 26.945 MHz FM - FSK data bursts - likely paging systems (numerous signals on frequency)
26960 kHz FM - 26.960 MHz FM - FSK data bursts - likely paging systems (numerous signals on frequency)
27125 kHz FM - 27.125 MHz FM - Weak FM signal, including several seconds of unmodulated carrier
27130 kHz FM - 27.130 MHz FM - Sounds like taxi cab dispatch
27135 kHz AM - 27.135 MHz AM - Two OM CBers chatting, fair signals - busy nearly constantly
27195 kHz FM - 27.195 MHz FM - Weak FM signals on frequency, some QRM from the 27.200 MHz guys
27200 kHz FM - 27.200 MHz FM - Two OM CBers chatting, very strong signals, SIO 555 nice FM audio
27255 kHz FM - 27.255 MHz FM - Caught tail end of a FM voice transmission in Russia
27585 kHz FM - 27.585 MHz FM - Weak YL voice heard, presumed taxi dispatcher/ taxi controller 27.585 FM

404

10/11 meters / Izhevzsk Russia KiwiSDR 11 meter Logs 1900+ UTC 16 Sept 2021

« on: September 16, 2021, 1911 UTC »

LO66ou grid, Izhevsk Russia

Band pretty quiet this evening (2300 local time likely explains why) - but the 26.945 MHz and 26.960 MHz paging systems were very busy.  26.960 MHz had signals on it nearly nonstop.  Lots of "hooks" (ISM signals) both within and above and below the 26957 - 27283 ISM band. 

26945 kHz FM - 26.945 MHz FM - FSK data bursts - likely paging systems (numerous signals on frequency)
26960 kHz FM - 26.960 MHz FM - FSK data bursts - likely paging systems (numerous signals on frequency)
27130 kHz FM - 27.130 MHz FM - YL taxi dispatcher (I think) - taxi cab controller
27135 KHz FM - 27.135 MHz FM - CBer, Russian (obviously) - much stronger than the 27130 signal
27225 kHz AM - 27.225 MHz AM - OM CB operator heard, weak signal
27645 kHz FM - 27.645 MHz FM - Taxi cab dispatch, YL dispatcher (weak)

405

10/11 meters / Re: 11 meter beacons

« on: September 08, 2021, 1601 UTC »

I had very good reception of the 69BY beacon yesterday.

On which frequency? 27550 or 27610?

27609.9 IIRC.

Okay cool - it's good to get a confirmation that the 69BY 11 meter beacon is still on the air and using 27610 / 27.610 MHz...well, 27609.9 / 27.6099 MHz anyway