I give all the credit for locating my last source to this group
including the matching the noise source tip. I am archiving all posts on
this group for future reference. Listening to 30m at this time with s3
regular old background noise (not including the T Storm crashes :-)).
Chuck
W4NBO
On 8/10/21 1:05 PM, K9MA wrote:
I've been doing just that for years, and agree completely with Chuck
that it's a key. You otherwise will waste your time tracking the wrong
sources.
Put the station HF receiver in AM mode, turn the AGC off, reduce RF
gain so it doesn't overload, and adjust AF gain so that it doesn't
overload the HT.
73,
Scott K9MA
On 8/10/2021 12:54 PM, Charles Plunk wrote:
Sounds like my neighborhood. In locating my last source (a horrible
20-30 over S9 on 75m), the most significant break through for me was
matching the noise pattern to what I was hearing in my hf receiver. I
accomplished this be retransmitting the hf receivers audio to one ht,
while I df'ed on another ht on 2m AM and a portable 4 element yagi.
With the 2 HT's in tow, when the 2 synced in noise pattern I knew I
was at the correct pole. Next time I may try stereo headphones with
one ht on one ear and the other on the other ear to reduce traffic
noise etc.
Prior, I made the big mistake of df'ing for just max noise at the
poles. These 7.2kv lines radiate a strong signal on 2m near almost
every pole (corona?) but that was not what I was hearing on hf. To my
surprise the target source was almost obscured by this noise with the
portable 2m AM. Also, I waited to hunt until the target source had a
distinctive pattern as it tended to vary and even go away with
variances in weather primarily humidity.
I also have a FT-817 (actually 2) to df in lower or higher
frequencies as needed. And adding to my portable yagis/ portable
loops as I get time to build them.
Chuck
W4NBO
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