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Kenwood TK-880H Question

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Seven-Delta-FortyOne

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I've looked at dozens and dozens of 95a certified radios over the last couple weeks, and I'm having trouble finding what I need.

Anyway, I'm looking at the Kenwood tk-880, but I don't know if it has a 5 watt setting for use on the interstitial channels. Anyone care to help me out on this one, or point me to another mobile that does have that?

Thanks,


Delta
 

RandyKnowles

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Delta -

Over the years the FCC has Type Accepted or Certified radios for GMRS with up to 50 watts output per 95.135(a). It's up to the users to further restrict their power to 5 watts Effective Radiated Power under the following operating conditions:

95.29(f)(3) On intersitital 462 MHz channels, and

95.135(c) On a Small Control Station North of Line A (near Continental US-Canada border), or east of Line C (near Alaska-Canada border), and

95.135(e) On a Small Base Station

Effective radiated power is calculated thus: 10 x log of output power in watts = power in db. Add antenna gain, subtract cable and connector and other losses (in db) = Effective Radiated Power in db. Divide by 10, take anti log = Effective Radiated Power in watts.

While radios could be configured to automatically reduce power for intersititals, there is no practical way to automatically configure for the other conditions, thus the duty is placed on the operator for compliance.

I hope this answers your question.

Randy Knowles, KAA 8142
 

Seven-Delta-FortyOne

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I do understand all of that, Randy.

I just don't know how one would go about following the rules with some of these Part 95a certificated radios. If the lowest setting is 10 watts, it would seem there is no way to make it compliant on the interstitial channels, besides intentionally adding high SWR. :eek:


Delta
 

kayn1n32008

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I do understand all of that, Randy.



I just don't know how one would go about following the rules with some of these Part 95a certificated radios. If the lowest setting is 10 watts, it would seem there is no way to make it compliant on the interstitial channels, besides intentionally adding high SWR. :eek:





Delta


The high and low power settings can be adjusted with in the software.
 

Project25_MASTR

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It's like the Motorola Radius. They came in 3 power ranges. 40-25W, 25-10W and LPI (10-1W).

The actual use of the interstitial channels through a mobile was not the envisioned concept. Remember…that's also a 5W ERP limit.

You'll find a lot of operators don't even bother programming the interstitial channels into their radios…just the primary 8 for repeater use.

Could've sworn the low power setting on my 880H's were 25W but I haven't turned them on let alone looked at them in 2 years.
 

N4KVE

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Thanks for the info, guys. Very helpful.

I just bought one, and it's supposed to be here today, so I'll be playing around with it.

Delta
I have 4 of them. They are great radios, & very easy to program. Great audio too. Most 450-490 radios will go to about 442-443 mhz, but the VCO can easily be adjusted to go lower. Enjoy.
 

Project25_MASTR

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I have 4 of them. They are great radios, & very easy to program. Great audio too. Most 450-490 radios will go to about 442-443 mhz, but the VCO can easily be adjusted to go lower. Enjoy.

I know one of mine will not take a cqodeplug…previous owner had it locked. Switched computers several times since I last programmed the thing. Guess I need to read one of the good ones and clone the troublesome one.
 

N4KVE

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Don't know. When I bought the 1st 880, the seller gave me a disc, & cable. When I got additional radios, I just dumped the codeplug from the 1st radio into the others. The last 880 was a V2, which means it has Fleetsync capabilities, so when I went to drop the codeplug into it, the radio mildly protested saying it was a different model #, but do I want to continue. I did, & it too works great. These radios are great, being able to do narrow, or wide band.
 

kayn1n32008

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Go with windows.. I have the following TK280/380/760 radios, and never entertained the idea of using DOS based software, when I could use windows software.
 
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