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Reviews For: Heathkit GD-1 Grid Dip Oscillator (GDO)

Category: Tools & Test Equipment for the amateur radio work bench

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Review Summary For : Heathkit GD-1 Grid Dip Oscillator (GDO)
	Reviews: 2	MSRP: 25
	Description: A classic! Tube type grid dip oscillator. Typically seen on eBay for $20-$30, depending on condition and options.
	Product is in production
More Info: http://www.qsl.net/n4xy/GDO_Heathkit.html
# last 180 days	Avg. Rating last 180 days	Total reviews	Avg. overall rating
0	0	2	4.5

M0WYM	Rating:	2008-09-06
Simple but Good			Time Owned: 0 to 3 months.
Mine is the UK version which I got from a club sale for £9 with the extra coils. The GDO is in very good condition and works fine but I would not call the oscillator stable :) Charlie M0WYM ---------------------- Earlier 4-star review posted by M0WYM on 2008-09-06 I got mine from a club sale for £9 with the extra coils. The GDO is in very good condition and works fine but I would not call the oscillator stable :) Charlie M0WYM

KG0WX	Rating:	2006-02-24
Works much better than the "modern" designs			Time Owned: 0 to 3 months.
This is a case where it wasn't broke yet some corporation just had to fix it. Transistor dippers simply just don't have the sensitivity of a good tube GDO. The Heathkit GD-1 series work perfectly. Output power? Surprisingly stout - I set my GDO on 2 meters, not coupled to anything. I then tuned in the dipper on my FT-51Rh handheld and went for a walk. The dipper was on my desk, in a house where the inner walls are chicken wire and stucco and the outer walls have aluminum siding. Still, I got 400 yards away before the carrier could not be heard on my HT (with the HT's OEM duck antenna). As strong as they are, they are remarkably sensitive to fields near the coil. I took a air variable cap and soldered a 1/3" dia x 8t coil to it and I could detect it's resonant freq on the dipper 8" away from the coil. I got lucky with mine - I got a near mint 1955 GD-1B with 2 sets of coils plus the extra hard to find low band coils (350-700 and 700-1900 khz) for about $25..... The part number for the extra two low band coils is #341-A. If you see the extra coil set - grab it! They are getting hard to find, as is a GD-1 in good condition. I saw one, battered and beaten with MELTED coils go for $44 on eBay!

Category:

Tools & Test Equipment for the amateur radio work bench

Product:

Heathkit GD-1 Grid Dip Oscillator (GDO)

Summary:

Rating:	Time Owned:
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