Type: Driver
File Name: eico_730_32791.zip
File Size: 39.6 MB
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Supported systems: Windows 7/8/10, Windows XP 64-bit, Mac OS X 10.X
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I have performed mods on a and it sounds great.

Antique Radio Forums • View topic - Not a receiver but - do I have a transmitter here?

Now it puts out watts of clean CW. With my better crystals I see no chirp. This was in a separate class for novice rigs.


The instruction manual has a procedure for setting the output tubes' bias and balance. Learn More - opens in a new window or tab Any international eico 730 modulator and import charges are paid in part to Pitney Bowes Inc.

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Learn More - opens in a new window or tab Eico 730 modulator international shipping is paid in part to Pitney Bowes Inc. Learn More - opens in a new window or tab. Related sponsored items Feedback on our suggestions - Related sponsored items.

Report item - opens in a new window eico 730 modulator tab. August 13,PM. Welcome, Guest. The transmitter had a toggle switch added to the front panel.

There were several low power CW transmitters on the market in the 50's and this modulator would have worked eico 730 modulator with them. Put it on ebay; make sure title has EL's in it and make a bundle.

Eico 730 Modulator-Driver

Circuit wise this is true. However, the components selected for a ham modulator are generally chosen to severly restrict the audio bandwidth to avoid occupying any more radio bandwidth than necessary and to avoid transmitting eico 730 modulator frequencies which use a lot of power and contribute little to intelligibility.

eico 730 modulator The clipping level is con- trolled by varying the common diode plate voltage by a potentiometer R9 in a voltage divider circuit. The out- put of the clipper is fed throughalow pass filter LI, C5, and C6 to suppress high order harmonics generated by peak clipping. The clipper, when adjusted by means of the over modulation indicator, prevents the voice peaks from over-modulating the transmitter. The result is a reduction of any spurious sidebands and a restriction of bandwidthof the modulated wave.

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NOTE: Before returning this unit, be sure ail parts are securely mounted. Attache tag to the instrument, giving your home address and the trouble with the unit. Pack very carefully in a rugged container, us- ing sufficient packing material cotton, shredded news- eico 730 modulator, or excelsiorto make the unit completely immov- able within the container.

Eico 730 Instruction Manual

The original shipping carton is satisfactory, providing the original inserts ore used or sufficient packing material is inserted eico 730 modulator keep the instru- ment immovable. You wouldn't happen to be on an Apple Mac would you" it to a. He was also a ham originally licensed in the s.

SOLD - Original Manual for Eico Modulator QRZ Forums

Ask for RON. Attractive cabinet and face plate with convenient layout of controls. Crystal could be changed from the front in seconds. Unusually rugged power transformer gave reliable service unlike most Heathkits of the day.

It has an expanded separate range for the upper end of 10 meters. It also has an expanded scale on 40, 20, and If you want to do two changes, do numbers 1 and 2. Best offer plus shipping cost 38 lbs.The Eico eico 730 modulator watt eico 730 modulator driver was introduced in According to the Eico ad in the Radio Amateur's Handbook, it was sold as a kit for $ Eico manufactured a lot of test gear, audio gear, and some ham gear.

They even had a surprisingly affordable tri band model sideband rig covering the most.

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