Tag Archives: DSA815-TG

MFJ-4117 Bias Tee – 0.06dB loss

Posted on 2020-04-15 by James

In order to remotely power my SG-230 Smartuner which will (temporarily) live in my attic to “tune” a large vertical loop antenna, I opted to use a bias-T to inject DC power onto the coax. Bias tees are passive components … Continue reading →

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Characterizing a Bencher YA-1 low-pass (TVI) filter

Posted on 2013-09-03 by James

Some time ago I bought a couple of low-pass / TVI filters from a ham-fest. It is mandatory to ensure that you are not producing out-of-band or otherwise harmful interference and so having such a filter assists in ensuring that … Continue reading →

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New test gear & and update

Posted on 2013-06-27 by James

So I’ve been very bad at updating lately but to be honest, there hasn’t been a whole lot to say! Back in April, I placed an order for some test equipment which I’ve been drooling over for a few years. … Continue reading →

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