Still can't get Win500 (latest version) to take any clipboard copies. Maybe Don Starr could give some pointers. I have the data in Excel. I just need to copy it to Win500. I've tried various cell formats for the Excel data (general, number) and it copies the text tag fine but not the frequency.
30 To 50 MHz, How Many Channels?
- Thread starter haleve
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DonS
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For Win500:
Format the frequency column as a number with 6 decimal places. For example, for 30.07MHz, format the column so it appears as "30.070000".
Format the frequency column as a number with 6 decimal places. For example, for 30.07MHz, format the column so it appears as "30.070000".
thomast77
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Hooligan
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I've read the entire thread & am throwing out some general comments.
Why stop at 50 or 60MHz? I'd go up to 87.975MHz.
Yes, US & allied military should be 25kHz steps/30kHz deviation but since there's a lot of commercial & other stuff there, some with beat-up old radios, etc. I think it's best to use 5kHz spacing when searching the spectrum as some transmitters may be off freq a ways plus there are people out there communicating on random freqs intentionally or not.
As for antennas, I think it's best to have a very good omni & a good directional, but the reality is that when skip is in, the magic isn't really a result of your antenna.
I suspect as more systems go up to higher spectrum & HF gets some protection from the IARU & ARRL, more comms in the VHF-Low spectrum will be used for ISM stuff, specifically what they call M2M -- machine to machine -- data comms for circuits that need more range than Bluetooth/Wifi. One such system that we already see a good amount of here in the USA are the wireless clock synchronization systems used on school/factory campuses.
5-Watt and 30-Watt Transmitters | Primex Wireless
I agree go above 50 MHZ, on several occasions I unwittingly broke in on noisy stations only to find that they were military stations operating between 51 to 53.99 MHZ, these mil users were located in the US, Mexico and Brazil and I initially thought that they were US ham stations which I frequently hear from my Northern Arizona location.
In all cases the Military users identified as so and so countries military and I simply apologized for breaking in identified myself as a ham and relinqished the frequency and sat back and listened to the conversations.
Frequently since 1989 especially during solar peaks I have heard some kind of mil stations on the 6 meter ham band so certainly don't stop at 50MHZ.
In all cases the Military users identified as so and so countries military and I simply apologized for breaking in identified myself as a ham and relinqished the frequency and sat back and listened to the conversations.
Frequently since 1989 especially during solar peaks I have heard some kind of mil stations on the 6 meter ham band so certainly don't stop at 50MHZ.
Not much in the 30 to 50 band in the UK, mostly allocated to the military (all 25kHz channels AFAIK) and what there is is low power only and rarely used so you'll be very lucky to catch it across the pond.
39.025 and 46.4,46.95, 46.975 MHz meteor burst system, multiple sites.
I did hear a British military user on 31.25 MHz CTCSS 210.7, but I don't know from which country (Germany/Cyprus/Gibraltar are all possible)
Some UK hospitals have pagers on 31.725 / 31.75 / 31.775 MHz.
Russian users heard right across the band, mostly 25kHz channels. Could be Russia or Ukraine, etc. Lowest freqs heard 29.7625 and 29.8875 so some are on 12.5kHz channels.
34-34.9875 multiple users, reported to be Turkish Fire Departments. 5 tones heard. 12.5kHz channels. Multiple CTCSS.
France 34.9–36.25 base stations, paired with mobiles 4.4 MHz higher. 12.5 kHz channels. Multiple CTCSS.
Directions Interdépartementales des Routes (DIR) - nationwide, some kind of highways department.
Italy: 43.3-43.5875 12.5kHz channels, seems to be a right mix of users with much data. Only 4W but it comes into the UK under the right conditions.
Poland: 47.075 possibly military (rarely received - needs sunspots and the jetstream to be in the right place)
Sigs around 39MHz reported to be in Farsi from Iran e.g 39.525 CTCSS 156.7 - only 25k channels heard.
Ireland: Nothing that I know of in 30-50 MHz.
39.025 and 46.4,46.95, 46.975 MHz meteor burst system, multiple sites.
I did hear a British military user on 31.25 MHz CTCSS 210.7, but I don't know from which country (Germany/Cyprus/Gibraltar are all possible)
Some UK hospitals have pagers on 31.725 / 31.75 / 31.775 MHz.
Russian users heard right across the band, mostly 25kHz channels. Could be Russia or Ukraine, etc. Lowest freqs heard 29.7625 and 29.8875 so some are on 12.5kHz channels.
34-34.9875 multiple users, reported to be Turkish Fire Departments. 5 tones heard. 12.5kHz channels. Multiple CTCSS.
France 34.9–36.25 base stations, paired with mobiles 4.4 MHz higher. 12.5 kHz channels. Multiple CTCSS.
Directions Interdépartementales des Routes (DIR) - nationwide, some kind of highways department.
Italy: 43.3-43.5875 12.5kHz channels, seems to be a right mix of users with much data. Only 4W but it comes into the UK under the right conditions.
Poland: 47.075 possibly military (rarely received - needs sunspots and the jetstream to be in the right place)
Sigs around 39MHz reported to be in Farsi from Iran e.g 39.525 CTCSS 156.7 - only 25k channels heard.
Ireland: Nothing that I know of in 30-50 MHz.
Tech1
Member
Picking up Low Band Skip is fun. Years ago I used to pick up the West Coast on 39.14 and the Texas Public Safety on 42mhz.
Same here, especially during sunspot peaks.
Low band comms from the U.S. boom in here from time to time in those periods, sometimes loud enough to hear the CTCSS/PL tone if it's one at the higher range.
I have recordings here somewhere, also from Sth. Africa.
Low band comms from the U.S. boom in here from time to time in those periods, sometimes loud enough to hear the CTCSS/PL tone if it's one at the higher range.
I have recordings here somewhere, also from Sth. Africa.
nd5y
Member
I know Australia has PLMR around 75-80 MHz. I didn't know about 30-50 MHz until I poked around on the ACMA webs site and found this: https://web.acma.gov.au/rrl/register_search.main_page
I clicked on 4. Assignment Frequency/Date Range Search, and entered:
From Location/Site: -34.5, 144.9
Distance: 700 km.
That makes a circle that includes Adelaide, Melbourne, Canberra and Sydney.
Lower & Upper frequencies: 30 and 50 MHz
Authorisation Date Before: today
It found 352 records. Running 54-88 MHz returned 2812 records.
I clicked on 4. Assignment Frequency/Date Range Search, and entered:
From Location/Site: -34.5, 144.9
Distance: 700 km.
That makes a circle that includes Adelaide, Melbourne, Canberra and Sydney.
Lower & Upper frequencies: 30 and 50 MHz
Authorisation Date Before: today
It found 352 records. Running 54-88 MHz returned 2812 records.
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