On 1/26/2011 12:48 AM, Joe Subich, W4TV wrote:
>> Of course, it is a practical impossibility to shut out that segment
>> and still allow full 10-meter coverage.
> Except for those amplifiers that use a microprocessor controller with
> frequency counter. The controller can be programmed to lockout when
> detecting RF between 26 and 28 MHz. If the amplifier is also designed
> so that it is impossible to operated with the processor defeated the
> design will pass muster under the new rules (the SPE Expert, THP 1.5Kfx
> and 2.5Kfx are all examples of this approach).
You sure? The 1.5-Kfx can be operated manually and depends on the
exciter to tell it which band it's on. I don't know about out-of-band.
73
Roger (K8RI)
> 73,
>
> ... Joe, W4TV
>
>
> On 1/25/2011 11:40 PM, Glen Zook wrote:
>> Both the HR-2510 and HR-2600 Uniden can be "opened" by cutting a trace on
>> the circuit board and inserting a resistor. This changes the coverage from
>> 28.000 MHz to 29.6999 MHz to 26.0 MHz to 29.6999 MHz. Uniden tried, at
>> least for those units sold in the United States, to discourage this by
>> putting a layer of epoxy over that area of the circuit board. But, 10
>> seconds with an Xacto knife or razor blade took care of the expoxy.
>>
>> As for 10 meters on linear amplifiers: The FCC did remove the ban on
>> 10-meter operation for certification. However, there is a "gotcha" in the
>> fact that a certified amplifier cannot be capable of amplifying frequencies
>> between 26.0 MHz and 28.0 MHz. Of course, it is a practical impossibility
>> to shut out that segment and still allow full 10-meter coverage.
>>
>> Glen, K9STH
>>
>> Website: http://k9sth.com
>>
>>
>> --- On Tue, 1/25/11, Fuqua, Bill L<wlfuqu00@uky.edu> wrote:
>>
>> I have a brand new in the box HR-2600 10 meter all mode that I put up on
>> eHam for sale and they took the advertisement off. An email telling me that
>> it was too easily converted to 11 meters and so banned from sale. You have
>> to make a crystal change and tweak a few pots to get it on 11 meters I would
>> guess, it is not an easy job by any means.
>>
>> My point is that even though the FCC changed the rules it seems no one is
>> about to change their practice.
>>
>>
>>
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>>
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