Video: Transceiver Performance for the DXer by NC0B

In a recent presentation to the Madison DX Club, Rob Sherwood NC0B gave a talk on transceiver performance on the HF bands.

As Rob outlines, receivers are now so good that the real limitation is with the transmitters. Note that receiver limitations due to someone else locally using an amplifier.

The 66 minute video is shown below...

The first half is about receivers and Rob talks about transmitters from 33:00 minutes onwards. 

Link...
1) NC0B's website - Sherwood Engineering

Video: Transceiver performance for the HF - VHF - UHF operator... by NC0B

The Sutton and Cheam Radio Society recently uploaded a video on YouTube titled Transceiver performance for the HF - VHF - UHF operator.

No matter what bells and whistles a radio has, the most important parameter is how it performs on the air in terms of reception and transmission of signals.

The presentation is given by Rob Sherwood, NC0B and it goes into quite a bit of technical detail on how to judge the RF performance of a transceiver on the HF or VHF bands.

Some key points...

• Sensitivity isn't the most important parameter on HF
• Low signal performance is often determined in modern times by urban noise
• While a dynamic range of 100dB is common on HF, it's usually a lot worse on 2-metres and above
• 2m & 70cms tranceivers are 10-25 years behind HF versions

If you are serious about getting the most from your station then it's well worth watching.

Fast forward to 2:45 for the start of the presentation...



Link...
1) http://nc0b.com/