How do you know when the dipole is set at the right length for the band in use? Measure it of course…. (make the dipole out of 30m Aluminum tape measures). 5m + 5m = Half Wave on 20m. 10m + 10m = Half Wave on 40m. 20m + 20m = Half Wave on 80m…
From “The Daily DX” — The following news is from K5FUV, Bill Kennamer. Feel free to pass this on to your DX friends and clubs. “DXCC Manager Bill Moore, NC1L, was seriously injured in an automobile accident about two weeks ago. His neck was broken, leaving him paralyzed from his upper body down, with limited…
DU 3500 AL Automatic Antenna Tuner. Made by HA8DU. SPECIFICATIONS: Frequency range: 1,8 – 30Mhz Matching range: max power 5:1 SWR Output Power: 3,5 Kw Compatibily: All automatic amplifier OM Power Tuning time: 1s programmed memory Display: 480×272 4,3″ Color TFT Display Capacitor: 510pF 5kV Ceramic switch: 2 Rotary switch Antenna switch: 4 ant. +…
The Raspberry Pi B+ (Pic above) builds on the popularity and architecture of the Raspberry Pi A/B (see “Arduino, Raspberry Pi or BeagleBone?”). This new version addresses many issues including the addition of four mounting holes that will allow the platform to be used in more rugged environments. The overall form factor is the same…
New two UHF Band PD3 Series Hytera DMR portable radios PD35X, PD36X. Features: ·Pocket-size design and easy to carry ·Four programmable buttons ·Micro USB port for easy charging ·Radio more compact through creative antenna design ·In digital mode, radio operates up to 12 hours using a duty cycle of 5-5-90 ·Dual mode ensures smooth migration…