does my spectra do 12.5kHz narrowband?
Moderator: Queue Moderator
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- What radios do you own?: Centracom Gold Elite, XTS5K 4K
does my spectra do 12.5kHz narrowband?
model: DC7ZX+085W
id: D43ZXA5JC7AK
581AVU0xxx
Need to know if I can use this radio on narrowband. I can get to read the radio tomorrow if that is the only way.
can anyone tell from that?
id: D43ZXA5JC7AK
581AVU0xxx
Need to know if I can use this radio on narrowband. I can get to read the radio tomorrow if that is the only way.
can anyone tell from that?
-Jon
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- Posts: 423
- Joined: Thu Aug 24, 2006 11:23 am
- What radios do you own?: Centracom Gold Elite, XTS5K 4K
Narrowband Astro
Hi Pj,
I know it's not wise to contradict a moderator, but here goes...
The earlier Astro Spectras (without the "2.5 kHz" on the label) will operate with narrowband transmission and reception - they just won't do it on 2.5 kHz channel steps, which are required for many (but not all) new VHF FCC narrowband assignments. Federal users (whose channels are on 12.5 kHz increments) can easily use the earlier Astro Spectras using narrowband emission.
73 DE Hartley
I know it's not wise to contradict a moderator, but here goes...
The earlier Astro Spectras (without the "2.5 kHz" on the label) will operate with narrowband transmission and reception - they just won't do it on 2.5 kHz channel steps, which are required for many (but not all) new VHF FCC narrowband assignments. Federal users (whose channels are on 12.5 kHz increments) can easily use the earlier Astro Spectras using narrowband emission.
73 DE Hartley
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- Joined: Mon Aug 16, 2004 12:08 pm
Astro Spectra
Hartley above is correct. My dept has the older version Astro Spectras that won't do the 2.5 khz step. (purchased mid 1990's)
Hartley is indeed correct. Every ASTRO Spectra I've ever seen is capable of 2.5KHz deviation in a 12.5 channel. However, only the ones tagged "2.5" (or, possibly not tagged but with an upgraded RF deck) have an oscillator of sufficient stability to tune the 2.5KHz splinter channels.
Any ASTRO Spectra should work fine with 2.5KHz deviation at, for instance, 155.4600. Only the "2.5" tagged ASTRO Spectras will work at 155.4675.
Any ASTRO Spectra should work fine with 2.5KHz deviation at, for instance, 155.4600. Only the "2.5" tagged ASTRO Spectras will work at 155.4675.