Topband: New MFJ 259C available

[Kees Nijdam]

Hello,

In my qth you need at least 30 dBm (1 Watt) for reliable measurements with a 
broadband detector. The 160m antenna picks up such an amount of signals that 
with less power you do not get  correct results. I allways use a selective 
methode with bridge, receiver and signal source.

Kees, PE5T
--------------------------------------------------
From: "Tom W8JI" <w8ji at w8ji.com>
Sent: Wednesday, March 05, 2014 7:08 PM
To: "Paul Christensen" <w9ac at arrl.net>; "topband" <topband at contesting.com>
Subject: Re: Topband: New MFJ 259C available

> Hi Paul,
>
> Where is a selectivity spec or a description??
>
> 73 Tom
>
>
> ----- Original Message ----- 
> From: "Paul Christensen" <w9ac at arrl.net>
> To: "topband" <topband at contesting.com>
> Sent: Wednesday, March 05, 2014 10:15 AM
> Subject: Re: Topband: New MFJ 259C available
>
>
>>> +13 dBm is nothing. That is only 20 milliwatts or 1 volt across 50 ohms 
>>> if that is at 50 ohms.
>>
>> +13 dBm may be more than adequate depending on that unit's (AA-54) 
>> selectivity.  I would like to see it's real world performance in the 
>> presence of a strong AMBC field.  For the CIA/VNA class of analyzers with 
>> their high selectivity, that power level is definitely more than 
>> sufficient.
>>
>> Paul, W9AC
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