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Sep 12
Sep 02
Jul 30

DummyLoad 100 Watts

Practical implementation The required resistance of 50 ohms is achieved by the parallel connection of 54 Metalloxydwiderständen (Figure 1) of the series E12 with 2.7 KOhm [2] and supporting a load of 2 watts. This results in a computational capacity of about 100... read more →
Jul 18
Jun 30

Antenna Tuner / T-Network

There is a reason why the T network tuner has enjoyed more popularity than an L network tuner. First, the advantage to an L network tuner as opposed to a T: Because there are only two variable components, there is only one setting of each which will provide a... read more →
Feb 10

Icom IC-7000 with external Display assembled

Icom IC-7000 with external Display There is a Jack on the back of the IC-7000 for an external Display. Pollin has a cheap Display that works fine with the IC-7000 Display Details Betriebsspannung: 9...18 V- (Hohlbuchse 5,5/2,1 mm, + innen) Stromaufnahme: max. 460 mA Auflösung: 1024x(RGB)x600 Pixel 16:9 Helligkeit:... read more →
Feb 04

Pico Balun – 1:1 or 4:1 Balun Kit

Pico Balun - 1:1 or 4:1 Balun Kit Complementing our growing range of light-weight products, the Pico Balun is sure to be popular.  A high frequency transformer using a twisted-pair transmission line gives the desirable characteristics of small size, low weight and low loss. A tiny patch-panel allows the Pico... read more →
Feb 04

Antenna Winder

Antenna Winder for SOTA I have spent some time searching for the ideal way of winding up antenna wire for use in the field. These special winders are just about perfect! Lightweight and with an elastic fastener to secure the wire, they are quick and easy to use. Wire winders... read more →
Feb 03

LIPO Battery 3000mAh with Charger for Yaesu FT-817

This Battery Pack is for the Yaesu FT-817 compatible WLB-817S 3000mAh LIPO (Used for FT-817) Nominal Capacity: 3000mAh Maximum Capacity: 3300mAh Voltage Range: 9-12.6V Nominal Voltage: 11.1V Maximum Current Output: 4A Charge Voltage: 12.6V Charge Current: 1-3A Protection: Over-current, Short-Circuit, Overcharge,Over Discharge Protection Dimensions(WDH): 96×60×15(mm) Weight: 180g   WLB-817S polymer... read more →
Feb 02

Vertical vs. Dipol Antenna

Ab und zu kommt immer wieder die Frage: Was sind denn die Unterschiede zwischen einer vertikalen und einer horizontalen Antenne? oder Welche Polarisation soll ich wählen ? Die Antwort kann man etwa so zusammenfassen: Polarisation: Die Polarisation der Antennen spielt auf KW keine grosse Rolle. Man arbeitet ja, von... read more →