155.505 D065

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Scott
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155.505 D065

Post by Scott »

I swear there was a conversation here about this, or something similar to this, at one point. This repeats a transmission every five seconds, that is five seconds in length. For lack of a better explanation each transmission begins with what sounds like CW, the letter W. On and on and on incessantly!

It's not showing in our world famous Wiki, or at Radio Reference. I even Duck Duck Go'd it (because Google is NOT your friend) to no avail.
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murphcc1
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Re: 155.505 D065

Post by murphcc1 »

Im not getting any of that from Bourne Scott.
Live about 9 miles west of you.
Using sds200 with Larsen multi band antenna.
deacon
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Re: 155.505 D065

Post by deacon »

I am hearing it loud & clear in North Mashpee. This used to be a dispatch frequency for the RISP North Zone prior to RISCON.
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Re: 155.505 D065

Post by Scott »

deacon wrote: 21 Jul 2022 14:36 I am hearing it loud & clear in North Mashpee. This used to be a dispatch frequency for the RISP North Zone prior to RISCON.
It's pretty strong here. I remember when RISP used it, but as you state it's been a while and I believe it had a PL of 118.8.
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Re: 155.505 D065

Post by Scott »

murphcc1 wrote: 21 Jul 2022 14:12 Im not getting any of that from Bourne Scott.
Live about 9 miles west of you.
Using sds200 with Larsen multi band antenna.
Could be a matter of those zany filters in the SDS models but as I recall your antennae are indoors too.
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Re: 155.505 D065

Post by murphcc1 »

Yea but I have one outside in the back now, facing west, not getting anything, doesn't mean much really, it's not that high, maybe 12' off the ground but at elevation of 145' with clear shot to the west.
But could be the SDS 200 filters too.
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Re: 155.505 D065

Post by W1KNE »

I thought for sure I brought this up. I get it almost full strength here.

Freetown has a bunch of unlicensed VHF transmitter links in the 155 Mhz band, several use D065.

I think this is coming from Freetown. I may have to do a drive this weekend.
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Re: 155.505 D065

Post by Scott »

I thought you or someone did too but damned if I can find a reference to it here. In any event I am out in that area from time to time as well and I'll have a listen the next time.
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Re: 155.505 D065

Post by W1KNE »

155.5050 is a good "DX" frequency, except for this chirping bird. New York State Police in the Hudson Valley use it (PL 110.9) and it can be a judge to an opening in that direction.
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xhe1n
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Re: 155.505 D065

Post by xhe1n »

155.5050 D065, The CW sound is actually the letter "M". The signal is full scale here in East Providence and as Scott mentioned, the CW is constant. TX CW
then carrier drops. Then repeats again constantly. Very strange.

Oops, forgot to mention that I have that frequency and tone logged in an old log file from back in June 2012. No CW note back then though.
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Re: 155.505 D065

Post by Scott »

Well I'm definitely hearing a W as I type this...but also definitely heard an M prior to that. Curiouser and curiouser....
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Re: 155.505 D065

Post by xhe1n »

Now I'm hearing an "A". So letters heard, "W" "M" and "A".
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Re: 155.505 D065

Post by xhe1n »

Just heard "2L38" looking for "2L35", Flight Line Communications. Voice mode
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Re: 155.505 D065

Post by Scott »

xhe1n wrote: 21 Jul 2022 22:55 Just heard "2L38" looking for "2L35", Flight Line Communications. Voice mode
I have yet to hear any voice traffic on here. Was it the same DCS tone? I ask because the bands were quite open on VHF last night (and still to an extent as I type this).
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Re: 155.505 D065

Post by xhe1n »

Yes, the tone was D065
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Re: 155.505 D065

Post by Scott »

Peculiar-er! May have to run an extended "record to file" session on this one. I've had it on all morning and for the entirety of the time It's been doing its thing as described.
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Re: 155.505 D065

Post by xhe1n »

It is strange for sure. Very early this morning, 7AM or so, I did hear other voice but only got bits and pieces of what was being said even though signal strength is full scale even with 10db attenuator on.
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Re: 155.505 D065

Post by Scott »

I've got ProScan running on it now, logging each transmission to an individual file so I can see the difference in recording lengths and pick out any voice traffic.
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Re: 155.505 D065

Post by W1KNE »

xhe1n wrote: 22 Jul 2022 11:45 It is strange for sure. Very early this morning, 7AM or so, I did hear other voice but only got bits and pieces of what was being said even though signal strength is full scale even with 10db attenuator on.
I am thinking this signal is based in Rhode Island , possibly Neutakonakut Hill (where WPRO-FM is located), based on just how wide of an area it covers. The fact you have it with 10db of attenuation almost proves the theory of it being there somewhere.
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Re: 155.505 D065

Post by Scott »

Scott wrote: 22 Jul 2022 12:42 I've got ProScan running on it now, logging each transmission to an individual file so I can see the difference in recording lengths and pick out any voice traffic.
The WiFi connection on the BCD536HP is an utter disaster. I can't keep it connected to my network so this project is DIW.
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Re: 155.505 D065

Post by xhe1n »

I think it originates here in RI due to the signal strength I receive. Based upon what I heard, "2L38 looking for 2L35, Flight Line Communications",
(I know it's only a one liner) but the term "Flight Line Communications", says it must be near or at an airfield. Maybe something at TF Greene or Quonset.
I'm not thinking that the signal is coming from an airfield, just the users.

Just a guess on my part.

On a side note, this frequency is still licensed to the RI state PD under 2 callsigns, KA6427 and KTL541, both of which expire in 2032.
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Re: 155.505 D065

Post by schwab »

2L35 and 2L38 sound like NYSP callsigns. I see on RR that NYSP Troop L headquarters at at Republic Field in Farmingdale, NY; could be related to the term "flight-line"?
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Re: 155.505 D065

Post by Citywide 173 »

I've been monitoring it here in Attleboro all afternoon. The "M" is a constant and the signal is very strong (-54.7 dBm) so I have to agree that the signal with the code is in RI or a bordering MA area. Is it possible that the signal opened on the local transmitter, but the audio from a further signal due to atmospheric enhancements made it through?
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Re: 155.505 D065

Post by W1KNE »

schwab wrote: 22 Jul 2022 18:59 2L35 and 2L38 sound like NYSP callsigns. I see on RR that NYSP Troop L headquarters at at Republic Field in Farmingdale, NY; could be related to the term "flight-line"?
Also Troop L Long Island uses 155.505.
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Re: 155.505 D065

Post by deacon »

This morning I am hearing a different tone ( 2 strikes, not one, different pitch?) and even stronger than previously.

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