Topband: Nostalgic "openings"

[Charlie Cunningham]

Hi, Jim

The first "sideband" rig I ever had -back in the 1950s was a T-19 (3-4 Mc) ARC-5 in which I converted the 1625 finals to a high-level balanced modulator by connecting the balanced grid tank to apply RF in push-pull to the control grids and applied push-pull audio transformer coupled to the screen grids and left the plates in parallel. Had lots of fun with it on 75m "SSB".  The VFO's in those aircraft radios was plenty stable for sideband and the design and construction was so carefully balanced that achieving good carrier suppression was no problem! And most of the guys listening to me had SSB selectivity in their receivers so the opposite sideband wasn't a problem. I'd just zero-beat their carrier frequency and call in! :-)  In the "old days" - not long after WW II. There were lots of ARC-5s around and I still have a few‼

73,
Charlie, K4OTV



-----Original Message-----
From: Topband [mailto:topband-bounces at contesting.com] On Behalf Of James Rodenkirch
Sent: Saturday, January 18, 2014 3:20 PM
To: Top Band Contesting
Subject: Topband: Nostalgic "openings"






By the bye, the e-mail from Don, WD8DSB, reminded me of an old Globe Scout double side band rig I owned YEARS ago:
Globe Sidebander DSB-100:  transmitter.
It's ad appeared in  MAY 58 QST;  price $119.95 kit, $139.95 wired; 40 watts AM, 50 watts CW, 100 watts DSB; bandswitching 80 thru 10 meters;  6CL6 crystal oscillator, 6CL6 buffer/doubler, pair 6DQ6A final amplifier; 12AX7 speech amplifier, 12AX7 driver, 6AQ5 modulator, 6AL5 speech clipper, 5U4GB rectifier; weight 30 lbs.
Go here for a pic: https://www.google.com/search?q=globe+sidebander+dsb-100&tbm=isch&source=iu&imgil=sU-DHOHX30gNzM%253A%253Bhttps%253A%252F%252Fencrypted-tbn3.gstatic.com%252Fimages%253Fq%253Dtbn%253AANd9GcTD2FiUvvky-Ujm-wJiMEew4QzUvbI0CQgbZHBu3ikMSaLp2Otg%253B640%253B428%253BjgUGacNNUJMasM%253Bhttp%25253A%25252F%25252Fwww.oldtuberadio.com%25252Fglobe-sidebanderdsb-100%25252F&sa=X&ei=SuHaUsa_MqPuyAGt6IHYCQ&ved=0CDoQ9QEwAg&biw=1511&bih=714&dpr=0.9#facrc=_&imgdii=_&imgrc=sU-DHOHX30gNzM%253A%3BjgUGacNNUJMasM%3Bhttp%253A%252F%252Fwww.oldtuberadio.com%252Fwp-content%252Fuploads%252F2012%252F04%252FGLOBE-SIDEBANDER-DSB-100.jpg%3Bhttp%253A%252F%252Fwww.oldtuberadio.com%252Fglobe-sidebanderdsb-100%252F%3B640%3B428
Sigh.....good memories of WRL and Heathkit....Jim Rodenkirch K9JWV 		 	   		   		 	   		  
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