I would like to start a new section in
the blog call 'Test Bench' where I will test
portables, UL and similar receivers. I will focus on
empiric testing instead to analyze their technical
specifications. BTW today's tech info included,
together with manuals and directions, are extremely
poor most of the times.
So, I would like to standardize some testings and
would like to hear suggestions, if any.
BANDS GO BE TESTED
Medium Wave and FM (VHF Band II)
(*) - If any other usable band would be
included and test it.
Year of appearance, versions, weigth,
size, robustness, portability, plug-ins, buttons and
A. QTH, at home, with unavoidable noise,
under real conditions. The receiver response will be
better or worse depending on each one's conditions.
B. Portable, in the field. More or less
an ideal site QRM free to check receiver's features.
I will do it close at home (pic-nic area at about
300 m away).
Daylight tests (Ground wave)
1. Selectivity. With two local stations
aside, check filter effectiveness (adjacent QRM and
2. Sensitivity. Tuning in to far and
weak signals, the weakest and furthest, the better.
3. Stations nulling. Rejection capacity
with ferrite and/or whip.
4. External antenna. How the receiver
performs with an external loop, vertical or small
aerials connected. (by induction or direct
Nighttime (Sky wave)
5. Stations nulling. Rejection capacity with ferrite
6. QRM Inmunnity (There are more QRM sources at
night that can be transmitted and received,
affecting to listening conditions).
7. Audio quality.
8. Ease of use.
What do you think about it?