Is there any way of telling the age of a piece of Heath equipment by its serial number? The SN of my HW-16 is 07313. Jerry - NR5A - South Dakota ... From:...
I am looking to purchase a Heath Catalog from the 1978-1979 time frame. I was first licensed then and would love to have the catalog with an HW-101 ad. It was...
looking for a nice code oscillator , anyone have one they want to part with, the book with it would be a plus.... ... Do you Yahoo!? Yahoo! Search - Find what...
Maybe someone can more accurately pin it down. The only documentation I have says that the HW-16 was produced during the years between 1967 and 1976 and 1,818...
Hi, Doug. I have a book "Heathkit: A guide to the Amateur Radio Products" by Chuck Penson WA7ZZE. It is published by CQ magazine. It has pictures and specs for...
Sorry about this. My ISP recently installed a SPAM filter, which is enabled by default. Now I thought that this was a good idea, as I'm no fan of the spammers....
hopefully, others will learn from your lessons. Spam filters when adjusted, work great. However, finding out that you are missing important (to you) messages...
Question: Does anyone have experience repairing problems in the B+ voltage doubler supply on a DX-60? Mine is running very low B+, that is about 400V and about...
The 'good' buzz is just a loose lamination - no worries. Anything else is a short - possibly a shorted turn. This is very bad. What is the primary current with...
With the HV AC secondary open and the filaments and bias supplies still connected, the AC current in the primary is about 340 mA which seems reasonable to me. ...
Secondary voltage with no load is 245V. Doubler circuit will give 612V DC from that in theory. At least according to the ARRL Handbook. I would expect 720-750V...
You need to pull the tubes or disconnect the other secondaries. Then, if the transformer gets hot with no load, or the magnetizing current is too high, it has...
With a 2.3 k-ohm load on the secondary, I get no buzzing. The primary current rises to about 540 mA AC. This is while the transformer is delivering 238V to a...
I already did all that. Instead of pulling out the tubes, I disconnected the outputs from R34 and R35 over to the rest of the transmitter circuitry and it...
Is the doubler solid state or tube? Neil ... From: "Brian Carling" <bcarling@...> With a 2.3 k-ohm load on the secondary, I get no buzzing. The primary...
... From: "Brian Carling" <bcarling@...> ... Took a peek. The diodes may have punched through or degraded. I'd replace them with good new ones, 1200V 1A...
FOR SALE: Heath QF-1 Q Multiplier For 450 - 460 kc. I.f. range. Has Sharp peak, Broad peak and null (notch) functions. Case is in fairly good shape, paint is...
SB-101 case has been painted light gray. Actually didn't notice it til I got the rig outside in daylight. Faceplate is nice some cracks in LMO skirt. There are...
Looking for manual or copy for IT-18 in circuit transistor tester. Please email me direct if you can help! ke4mg@... Thanks Ken ===== Please visit my web...
Anybody have the part of the assembly manual for a GR-54 that shows how to string the Main tuning and Bandspread? I have one that is strung backwards, and only...
-- "Mac" <w8xf@...> wrote: Anybody have the part of the assembly manual for a GR-54 that shows how to string the Main tuning and Bandspread? I have one...
FOR SALE: Heath TC-2 Tube Tester Excellent tube tester that will test a wide variety of tubes. Roll chart is built in and operates perfectly. A couple of the...
How do I silence the Heath AR-3 receiver while transmitting ? I don't want to manually switch it to standby.... A relay now turns on the oscillator, switches...
