Archive for March, 2018:

2018-03-28 Wideband RF Amp In Royal 500s

From FB group Ferrite Loopstick Antenna Experimenters Some experimenters in another group looked at schematics and saw that some radios with a RF amplifier between the loopstick and the converter used a third section on the variable capacitor to tune the RF amplifier. This is good, but it makes the variable capacitor more expensive and

(Read More…)

2018-03-27

From FB group Vintage Transistor Radios James Ault Thanks for reminding me. I gave my 22 yr old car to my sister and after awhile the door started rattling. I found that the post that sticks out for the door’s latch to latch onto used to have a nylon sleeve, but age had caused it

(Read More…)

2018-03-26 Reflex Receiver, 2 Transistor

For FB group Building Transistor Radios Darrell Darby (Schematic below) What amazes me is the collector load resistor for the earphone stage is 100k. That’s more than ten times higher than usual, and it’s okay because the crystal earplug is very sensitive. I would squeeze a bit more gain out of it by removing the

(Read More…)

2018-03-25 Prepare For Changes To The 2nd Amendment

For the FB group Orange Talk Brian Brice Bob Takahashi Jay Brown In the late ’60s, there were protests that 18 year olds were old enough to die in Vietnam, but not old enough to vote. In 1971 the 26th Amendment was sent to the states, and *3 months* later it became a part of

(Read More…)

2018-03-23 tbd

First post to the FB group Ferrite Antenna My first experience with measuring inductors came a few years ago when I bought an LC IIb meter from AADE. It’s a very accurate meter but has a few quirks. I bought a bunch of small 100 uH chokes from a US company, and when I got

(Read More…)

2018-03-22 2016 Republican Platform

from FB group Orange Talk Mary Mickey Clancy-Kreutz I read some of the 2016 Republican platform, and I was disappointed by how much of it was attacking the “present administration” (Obama), and Democrats. Yet they talk about valuing human rights, then criticize amnesty programs. Many other things were disappointing. They use the term ‘environmental extremism’

(Read More…)

2018-03-20 Edison Blackout Phone

From FB group Bell Telephone of… We had a hotline phone from So Cal Edison that was supposed to receive calls only. They would call us on a hot day when the power demand exceeded the supply, and they were going to shut down the a/c on buildings. We got a discount on the electric

(Read More…)

2018-03-18 Dissatisfaction

From FB group Orange Talk Halo Mike There is a point where F.U.D. about life threatening situations transcends politics and becomes a national movement. This is what happened during the Viet Nam War era when students and many others protested. You’re too young to have first hand knowledge of that, but what you’re seeing right

(Read More…)

2018-03-14 Switchboard 714-262-1135

This number was most likely from the time when the 714 area code covered the area outside of LA, including all of Southern California San Diego county and east, Riverside County, San Bernardino County, and the east side of the Sierras all the way up to Inyo. I remember that no prefix in Orange County

(Read More…)

2018-03-12 Phones Too Hot 

From FB group Bell Telephone of… That brings up a thorny question. We moved into a brand new bldg, and when it got hot over the weekend, Monday morning I had to go out to the other campus and find out what happened to a few phones. The phones in 2 of the second floor

(Read More…)

© RustyBolt.Info/wordpress
CyberChimps