DF

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DF

1. Abbr. for daylight factor.
2. On drawings, abbr. for drinking fountain.

DF (direction finder)

A radio receiver equipped with a direction-sensing antenna used to take bearings on a radio transmitter. A direction finder essentially consists of a loop aerial. To remove 180° ambiguity, a sense aerial is also brought into the circuit. The DF system can either be airborne or ground-based. See automatic direction finder.
References in periodicals archive ?
Thus, a majority of the assets of large single-employer defined benefit plans are reported only as undifferentiated indirect investments made through DFEs.
After this incident, the DfES said: 'We are particularly keen to stamp out those salesmen who are aggressively marketing ILAs and misleading people.
Schedules H, Financial Information for Large Plans and DFEs, and I, Financial Information for Small Plans, were developed from the financial statements in the old version of Form 5500 and 5500-C/R.
Dr Philip Dixon, director of education union ATL Cymru, called for DfES to be inspected and said: "Teachers and heads are facing an increasingly tough accountability regime and their performance is being scrutinised as never before.
MTIA, CCT, PSA, or 103-12 1E) with the aggregate amounts reported by all large pension plans as the year-end value of interests held in DFEs of the same type reveals some fundamental facts.
A spokesman for the DfES said these examples of "extreme behaviour" represented a "minscule proportion" of the three and a half million children at primary school.
The DFES is not ordering or advising heads to ban the veil, but is confirming that they have the ability to do so if they wish, so long as they carry out proper consultation, said the spokesman.
Civil servants have replied to the two organisations to distance the DfES from Truth In Science's material.
A Dfes spokesman today refused to confirm if any of the known sex offenders who were cleared by the department to teach were from Wales.
A DfES spokeswoman said: 'I can confirm that the funding agreement for the academy has not yet been signed.
The DfES commissioned the National Foundation for Educational Research (NFER) to undertake an evaluation of the first cohort of participants.
The Leicester Road school has won approval and funding from the DfES Innovation Unit to knock homework on the head for pupils in years 7, 8 and 9 and replace it with the Passport to Learning scheme.