Amateur Radio 160 meters

[@CARL557511]

Some of those old Grebe receivers were hard to beat!

[@RottenAnimal]

Great video.

[@Gary-t9v]

I think its so cool that a simple regen rcvr can demod SSB by adjusting just before oscillation ( or just past osc?)

[@bobmarker6812]

You just answered my question before I asked . Thanks!

[@HD7100]

I hear CQ and then 2 but cannot catch the entire station call. I am very out of practice with CW. Nice Grebe radio. I wonder if that radio was designed for amateur users as well as general broadcast band listeners. Very nice radios. Did your Atwater Kent horn have the phenolic driver cap verses the pot metal driver? I have a Radiola RC (Westinhouse RA-DA) I should see if I can tune up to 160 on it. I believe that was a popular receiver for early 1920s amateur radio enthusiasts.

[@curlyzim1]

The Grebe CR-8 and CR-9 and everything before were communication receivers from 1921. The amateur radio band at that time was 200 meters and below. These radios just happened to be on the market for the birth of Public Broadcasting. The Grebe CR-8 covers from 150 through 1000 meters and may vary due to antenna loading and length. It was believed at the time that high frequencies were useless that’s how we got the HF frequency’s. In the early 20’s the broadcast band was 700 to 800 meters so many early broadcasts receivers don’t cover the whole broadcast band. On my model “H” AK horn speaker the driver was open pot metal disintegrated. So I replaced it with a new driver from a different manufacturer. My model “M” AK horn is original and works well. The model “M” didn’t use pot metal for the driver. My Music Master Horn had an open drive. I replaced the coils and magnets from an old junk headphones. Works well. Thanks again for watching. 73’s KA1VMW

[@curlyzim1]

Yes it was designed for amateur and commercial use. And it was on the market for the birth of Broadcast Radio. There was no cap in the AK horn. 73’s and thanks 🙏 for keeping vintage electronics alive.