Yaesu FT-200 HF Transceiver

My Yaesu FT-200 HF band amateur transceiver review includes, instruction manuals, and video presentation of the transceiver. Yaesu FT-200 Amateur Band HF Transceiver The Yeasu FT-200 transceiver covers the amateur bands 80 through 10 metres. The transceiver provides transmission and reception of SSB (both USB and LSB are selectable), CW and AM. The transmitter provides …

Icom IC-2E 2m Amateur Radio Handheld Transceiver

This review of the Icom IC-2E 2m amateur radio handheld transceiver includes description, technical summary, specifications, links to user manuals and a video presentation of the transceiver. The Icom IC-2E has a special place in the history of South Africa. Icom IC-2E Description The Icom IC-2E 2m amateur radio handheld transceiver was released by Japanese …

Kenwood TR-7200G 2m FM Transceiver

The Kenwood TR-7200G 2m amateur band FM mobile transceiver is a neat, good looking piece of kit however the microphone is a distinctively odd shape. The transceiver was launched by Trio/Kenwood during the 1970's. I purchased one of these transceivers in 1975 and kept it until I replaced it with a Kenwood TR-7600. the radio …

KP-202 2 metre NBFM handheld Transceiver

The KP-202 was my first 2m handheld transceiver. Purchased from Hamrad still while I was waiting for the operating licence to arrive by mail. Kenpro KP-202 in Use I had my KP-202 for quite a number of years, from 1974 until I sold it about 3 years later. A reliable piece of equipment, it never …

NE555 Schmitt Trigger

How a NE555 Schmitt trigger works. The NE555 can be used as a Schmitt trigger by using the two comparators in the chip to make a Schmitt Trigger. Using the NE555 as a Schmitt Trigger Schmitt Triggers Simply put a Schmitt trigger is an electronic circuit designed to detect a voltage crossing point, then produce …

Heathkit Amatuer Radio Electronics Kits

Heathkit produced a range of kits that included amateur radio transmitters, receivers, amplifiers and station monitoring and test gear. Other products in the range of kits were TV sets, household appliances, electronic test instruments and, near the end, some early computers. Heathkit The Beginnings Heathkit began life as an airplane company back in 1911. The …

SONA 2022 Sustainable Energy Projects

In his SONA 2022 State of the Nation address President Ramaphosa promised several GW (Gigawatts) of new sustainable energy generation for South Africa. Government plans to grow overall generation capacity by nearly 15GW. Of this around 5.7GW is from fully renewable resources. This is inline with previous discussions with interested groups and stakeholders about putting …

Heathkit HM-2102 VHF Power / SWR Meter

The Heathkit HM-2102 VHF Power / SWR Meter for 2 metres was introduced by Heathkit in 1973. The HM-2102 was is able to measure RF output in two ranges. Range 1 is 25W while range 2 is for up to 250W on both bands. Amateurs can use the SWR function to check their antennas too. …

555 Astable Mode

In the 555 astable mode, the IC puts out a continuous stream of rectangular pulses having a specified frequency. 555 Astable Mode Resistor R1 is connected between Vcc and the discharge pin (pin 7) and another resistor (R2) is connected between the discharge pin (pin 7), and the trigger (pin 2) and threshold (pin 6) …

WPML Yoast Plugin Conflict

A WPML Yoast plugin conflict breaks the Yoast sitemap. When Yoast SEO v1.4.19 update was released some changes in the code prevented the sitemap from working correctly. WPML Yoast Plugin Conflict - Yoast SEO sitemap_index.xml Shows Home Page A conflict between Yoast's WordPress SEO plugin and the very good WPML (WordPress Multilingual Plugin) caused the …