ACROSS
1A tube element usually connected to the cathode
7An early device to store charge
8Current flows into this element of a device
10Gas associated with reflective layer
12Where we store our data
13Time rate of energy
14Spectrum consumed by a signal
15Three grid amplifying tube
17A triggerable tube
19Non-numerical value label
20Scottish scientist
23Keep someone from doing something
25This puzzle's theme
26Airship antenna briefly
28Short for coulomb per second
29Puts a device into a quiescent state
30High power potentiometer
31High capacity transmission
35Something done to a crystal
36The most common bipolar transistor
37Semiconductor version of the 0A1
38A device measured in henries
DOWN
2___ is futile
3Use a BFO to ___ a frequency
4A type of average
5Magnetic ____
6EB__
9Our shack always needs more of this
11Distinct part of a device
16The simplest valve
18A solid that current flows in
20Reflect upon this brilliant English engineer
21Prefix for the 8266 used in the D1 Mini
22Early T-antenna
24An early passive communications satellite
26Second character in many calls
27A unipolar transistor
32What rig purchases do to your budget
33Designated range of frequencies
34What a 1.5 V battery really is