[TenTec] filter

Bob McGraw rmcgraw at blomand.net
Sun May 2 18:44:25 EDT 2021


I trust you were aware the NB offered 2 different levels/width of 
blanking.   Also if one used the 600 or 300 Hz filters the NB function 
was much less efficient.

73

Bob, K4TAX

On 5/2/2021 5:24 PM, Greg S via TenTec wrote:
> Interesting, Bob. I had 2 Eagles, and neither NB was worth a darn on my fencer pulses. Orion hardware blanker was pretty good.
> Greg, KC8HXO
>
> Sent from my Linux device
>
>> On May 2, 2021, at 17:56, Bob McGraw <rmcgraw at blomand.net> wrote:
>>
>> The Noise Blanker function is about the best there is.   The use of narrow selective filters will often make the pulse noise become a wider pulse.    A wide filter is preferred.   But considering that the noise is in the receive passband, there is little way to effectively filter it out.
>>
>> It however, depending on the radio and implementation of the NB system, it may be good or not so good.    I find the hardware noise blanker as used in the Tentec Eagle to be very effective on impulse noise such as an electric fence.   However, the digital noise blanker as used in the Omni VII is not near as effective.
>>
>> Usually Noise Reduction systems {i.e. NR} aren't effective with this type of noise.
>>
>> 73
>>
>> Bob, K4TAX
>>
>>> On 5/2/2021 2:15 PM, Rodney Dewald via TenTec wrote:
>>> Does someone know if there is a filter to filter out electric fence interference
>>>
>>> Sent from Mail for Windows 10
>>>
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