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I will pass on this No more brown phenolic shabby PCB cards, but now real quality fiber glass boards with silk screen markings and back side solder masked, OMG.

Heathkit SB, HW, SBA Web Site

You can login to do that! Got my first contact this rig, on 20meters! The cure for for a dead 5vdc dead or 11vdc dead. If this is the reason, announce it with the blue man icon on the top and I remove it. A steel case, my SS30 is and works quite well A recognized brand? Did you add the Toroid donut Ferrite device yet?


A watt VA line sucking beast. What to avoid is easy. It will not run on 12v batteries, unless modified.

Heathkit HW-104 Manual

Do not touch heatukit 4 pin card! After the cure, Bam! Click the photo for more information. Bulletin fixes and mine In HIGH it sets final amp bias. I will only modify mod.

I trace this signal schematic and real wires to the VFO buffer card. Do not key up the transmitter, with the rear Antenna feed line missing. This rig runs on You can in fact mix some 74xxxx logic families.

The Vernier dual jackson drive main Frequency dial, is smooth as stick in warm butter. Click photo to see original card and the silver black death chips issues. I Got one more fix.

Keeping leads short and inductance low is very hard giving the physical lay out. The Web Schematic A. Seen with red underscores. In the above new set is my full system schematic, for the Non A.

  GHX 616 PDF

First up is m my slide show of my rig. Make sure all internal Oscillators in the manusl are working, no dead or missing crystals. Be sure the card number matches. The below shows my IC and the 1k ohm input impedance and is the phantom power seen here. I power it up and on hetahkit the first time now: No squelch knob or tone controls for audio.

Motorola MFE Top cross refr. The drop put on the MFC is not totally known, that data was lost in the sands of time, but the data sheet shows 3v is what it can be.

Next I will cover microphones and the phantom upgrade, and choices. My actual RIG, first day, owned, problems and cures. There is at least mabual cap C12?

The blue cap is metal film.