2018年1月4日 · Keywords: MODIFICATION HEATHKIT SB-220 Report a problem with this entry; DEC 1990 - QST (PG. 41) Circuit Improvements for the Heath SB-220 Amplifier--Part 2 Author: Measures, Richard, AG6K Article: QST Archive [PDF] Keywords: MODIFICATION HEATHKIT SB-220 Report a problem with this entry; JAN 1989 - QST (PG. 23) Adding 160-Meter Coverage to …

2021年9月15日 · The failed Heathkit SS-8000 kit (just too complicated for hams to build) that became the SS-9000 "factory assembled kit" really spelled the doom of Heathkit in the ham world outside of accessories. According to Chuck's book, Heath Co. wagered $3 MILLION on that transceiver project, and in the end sold them off at a huge loss.

2019年6月5日 · But - but - I've been told right here on this board that the Heathkit filament transformer limited start-up filament current to a safe value!! Full disclosure (and what prompted a poster to talk about the Heathkit current-limiting filament transformer): I use a variac to bring the AC mains up and down to my SB-220 amplifier.

2023年1月26日 · Check out my new (to me) Heathkit SB-200. It's basically untouched, minus a few common modifications. [MEDIA] Matt K9EI

2017年7月24日 · It is true that the SB-301 has RTTY receive capability. What this entails is a third BFO crystal, so that the audio output in RTTY mode is compatible with the tones commonly used by hams for RTTY reception. In fact, to prevent odd operation of the SB-401 when paired with the SB-301 in RTTY mode, the SB-301 BFO amplifier is disabled by removing ...

2021年9月15日 · And it's absolutely wonderful - the best of the series by far, IMO. From the front cover, with the enticing view of a shiny Heathkit station as featured on the 1970 Heath Christmas catalog, to the rear cover showing an exploded view of all the actual parts to build an SB-100 transceiver, and everything in between, it's utter eye candy throughout.

2017年6月18日 · This is the MFJ-998 automatic antenna tuner 1500 Watts - Full Review and Setup. Tested with my Kenwood TS-990 and Heathkit SB-221 1.3kW tube amplifier (pair or 3-500z). I know, the bands were pretty bad the day I shoot this video, or I forgot to remove my RX antenna from ground ;-) 73 Pascal VA2PV

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2024年3月5日 · I remember countless hours using the school radio station, using his Heathkit SB-303 and SB-401. There I met Andy Stillinger (WA2DKJ - SK), another longtime friend who would sometimes be a "guest speaker/ teacher" at the after school radio club, as well as many of my amateur radio friends who are still great friends today.

2022年12月12日 · But luckily, a local ham in town had completely rebuilt, renovated, and upgraded an older Heathkit SB-200 linear amplifier, and sold it to me at a very reasonable price. Testing the SB-200 at his shop before purchase showed the …