EICO
TRANSMITTERS
720
723

TRANSCEIVERS
753 #1
753 #2
753 #3
753 #4

751 AC SUPPLY
752 DC SUPPLY

ACCESSORIES
730 MODULATOR
730 MODULATOR
730 MODULATOR

SECTION 4
722 VFO
717 KEYER









For mobile work on 80/40/20 meters I have acquired the EICO 753 Tri-Band Transceiver, which puts out about
200 watts pep on SSB, and runs 100 watts input on AM-Fone with 35 watts of carrier. I got Three of these things and
believe me when I say they were all "BASKET-CASES" when I received them. From the three units I received I was able to resurrect two units. One is being used as a mobile rig, with the other in the shack as a standby for the mobile. The complete system in the shack looks like this. For shack station I use the EICO 751 A.C. supply, and for  the mobile I got an EICO 752 mobile power supply and also a HeathKit HP-13 just in case.

For low power (PW) AM/CW operation I acquired thru E-Bay an EICO 720 90 watt CW/AM transmitter, an EICO
730 50 watt modulator, and the EICO 722 VFO which covers 80 thru 10 meters. I already had the EICO 723 60 watt CW/AM transmitter. After some serious cleaning up and parts replacement mostly in the power supply areas, I got all these units running up to the original manufacturers specifications and on the air. If you've talked to me I may have been running one of these transmitters along with the V.F.O. and modulator especially on 40 meters. These units provide me with the capability to run low power with a stable signal and clean modulation so I intend to keep them around for a long time. Check them out on CW too at the low end of 40 meters. The EICO station setup is complemented by a very nice Hammarlund HQ-110 receiver with the matching speaker.

 

WB2FCN (PW) PISS WEAK
CW/AM STATION



























The (PW) station is all EICO equipment. I have an EICO 720 transmitter rated at 90 watts input, which can operate AM and CW modes, 80 thru 10 Meters XTAL/VFO. My 720.The second transmitter in my (PW) setup is the EICO 723 transmitter rated at 60 watts input, which can operate AM and CW modes, 80 thru 10 Meters XTAL/VFO. My 723. For frequency control, I have an ample supply of crystals (XTALS) and the EICO 722 VFO which covers 80 thru 10 meters and drives the 720/723 quite adequately on all bands 80 thru 10 meters. My 722. The AM modulator is a multi-tapped output type, EICO 730 which is rated at 50 watts output, sufficient to modulate fully either the EICO 720 or the 723 to full AM output. Output modulation impedance matching from 500 ohms to 6500 ohms. My 730.Ancillary equipment for the (PW) station consists of an E.F. Johnson low-pass filter (50 ohms), external 115 VAC relay for keying the modulator and the VFO and activating the 115 VAC  TR-relay contained inside the E.F. Johnson Viking Match-Box (275 Watt) with external SWR meter and Directional Coupler. Each transmitter has its' own relay for switching purposes, to the right of the modulators in the pictures.                                             My Receiver for the PW station is a Hammarlund HQ-110 with the matching speaker. I got this from my friend Josh down in Pittsburg, PA. It was listed on E-Bay and he said it didn't work. I took one look at it and bid on it, and got it and the speaker for 100.00, then drove down and picked it up. When I got it home I plugged it in, nothing then I read the Original manual that was included in the deal. The manual said, "turn the clock knob to ON" so I did and the thing came to life, Heh, Heh, easiest fix I ever did. I checked the calibration, and the bands and it was right on the money. Another fine addition to the WB2FCN radio line-up, THANKS Josh! My Match-Box / SWR meter and directional coupler. For those of your that don't use a Low-Pass filter, here is the spec sheet from E.F. Johnson for theirs, I don't get into phones or the "TV" because I use them on all transmitters at this location. I work the low end of 40 and 20 meters for High speed CW 7030/14030 and around 7290 on 40 AM and 14.286 20 AM, I use a ground mounted vertical AN/GRA-4, and an "End-Fed" inverted "L" on a city lot and no interference. CU there. Jim WB2FCN



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