C-DFD1A Digital Dial for any single conversion radio.

Using the universal interface, (included) installation is almost plug-n-play.

IF Offset is adjustable in steps of 10Hz from   0 -to  20.97MHz.

     It can be adjusted to within 10Hz of the actual IF frequency which may be slightly off due to alignment or crystal aging.

     A switch on the back selects add/subtract offset, to match the injection side of the radio, even if different from band to band.

 It can be used with any of the following Hallicrafters, Hammarlund or National radios, as well as other single conversion radios.

    fixed frequency second conversions are OK as they to not effect the calculation of received frequency.

Hallicrafters	Model	IF offset	Model	IF offset	Hammarlund	Model	IF offset	National	Model	IF offset
	S-20R	455KHz	SX-25	455KHz		HQ-100	455KHz		HRO-50	455KHz
	S-22R	465Khz	SX-28	455KHz		HQ-105	455KHz		NC-2-40	455KHz
	S-38	455KHz	SX-42	455KHz		HQ-110	455KHz		NC-33	456KHz
	S-40	455KHz	SX-43	455KHz		HQ-120	455KHz		NC-46	455KHz
	S-41	455KHz	SX-62	455KHz		HQ-129X	455KHz		NC-57	455KHz
	S-47	455KHz	SX-96	1650KHz		HQ-140	455KHz		NC-60	455KHz
	S-51	455KHz	SX-99	1650KHz		HQ-150	455KHz		NC-88	455KHz
	S-52	455KHz	SX-100	1650KHz		HQ-200	455KHz		NC-98	455KHz
	S-53A	455KHz	SX-110	455KHz		SP-200	455KHz		NC-105	455KHz
	S-76	1650KHz	SX-101	1650KHz		SP-210	455KHz		NC-173	455KHz
	S-85	455KHz	SX-111	1650KHz		SP-400	455KHz		NC-183	455KHz
	S-107	455KHz	SX-122	1650KHz					NC-188	455KHz
	S-108	455KHz	SX-130	1650KHz					SW-54	455KHz
	S-118	455KHz	SX-133	1650KHz
	S-119	455KHz	SX-140	1650KHz
	S-120	455KHz
	S-129	1650KHz
	S-200	455KHz
	S-210	455KHz